some of the commands:
[, [[, acpid, addgroup, adduser, adjtimex, ar, arp, arping, ash,
awk, basename, beep, blkid, brctl, bunzip2, bzcat, bzip2, cal, cat,
catv, chat, chattr, chgrp, chmod, chown, chpasswd, chpst, chroot,
chrt, chvt, cksum, clear, cmp, comm, cp, cpio, crond, crontab,
cryptpw, cut, date, dc, dd, deallocvt, delgroup, deluser, depmod,
devmem, df, dhcprelay, diff, dirname, dmesg, dnsd, dnsdomainname,
dos2unix, dpkg, du, dumpkmap, dumpleases, echo, ed, egrep, eject,
env, envdir, envuidgid, expand, expr, fakeidentd, false, fbset,
fbsplash, fdflush, fdformat, fdisk, fgrep, find, findfs, flash_lock,
flash_unlock, fold, free, freeramdisk, fsck, fsck.minix, fsync,
ftpd, ftpget, ftpput, fuser, getopt, getty, grep, gunzip, gzip, hd,
hdparm, head, hexdump, hostid, hostname, httpd, hush, hwclock, id,
ifconfig, ifdown, ifenslave, ifplugd, ifup, inetd, init, inotifyd,
insmod, install, ionice, ip, ipaddr, ipcalc, ipcrm, ipcs, iplink,
iproute, iprule, iptunnel, kbd_mode, kill, killall, killall5, klogd,
last, length, less, linux32, linux64, linuxrc, ln, loadfont,
loadkmap, logger, login, logname, logread, losetup, lpd, lpq, lpr,
ls, lsattr, lsmod, lzmacat, lzop, lzopcat, makemime, man, md5sum,
mdev, mesg, microcom, mkdir, mkdosfs, mkfifo, mkfs.minix, mkfs.vfat,
mknod, mkpasswd, mkswap, mktemp, modprobe, more, mount, mountpoint,
mt, mv, nameif, nc, netstat, nice, nmeter, nohup, nslookup, od,
openvt, passwd, patch, pgrep, pidof, ping, ping6, pipe_progress,
pivot_root, pkill, popmaildir, printenv, printf, ps, pscan, pwd,
raidautorun, rdate, rdev, readlink, readprofile, realpath,
reformime, renice, reset, resize, rm, rmdir, rmmod, route, rpm,
rpm2cpio, rtcwake, run-parts, runlevel, runsv, runsvdir, rx, script,
scriptreplay, sed, sendmail, seq, setarch, setconsole, setfont,
setkeycodes, setlogcons, setsid, setuidgid, sh, sha1sum, sha256sum,
sha512sum, showkey, slattach, sleep, softlimit, sort, split,
start-stop-daemon, stat, strings, stty, su, sulogin, sum, sv,
svlogd, swapoff, swapon, switch_root, sync, sysctl, syslogd, tac,
tail, tar, taskset, tcpsvd, tee, telnet, telnetd, test, tftp, tftpd,
time, timeout, top, touch, tr, traceroute, true, tty, ttysize,
udhcpc, udhcpd, udpsvd, umount, uname, uncompress, unexpand, uniq,
unix2dos, unlzma, unlzop, unzip, uptime, usleep, uudecode, uuencode,
vconfig, vi, vlock, volname, watch, watchdog, wc, wget, which, who,
whoami, xargs, yes, zcat, zcip
[HR][/HR]
COMMAND DESCRIPTIONS
acpid
acpid [-d] [-c CONFDIR] [-l LOGFILE] [-e PROC_EVENT_FILE] [EVDEV_EVENT_FILE...]
Listen to ACPI events and spawn specific helpers on event arrival
Options:
-d Do not daemonize and log to stderr
-c DIR Config directory [/etc/acpi]
-e FILE /proc event file [/proc/acpi/event]
-l FILE Log file [/var/log/acpid]
Accept and ignore compatibility options -g -m -s -S -v
addgroup
addgroup [-g GID] [user_name] group_name
Add a group or add a user to a group
Options:
-g GID Group id
-S Create a system group
adduser
adduser [OPTIONS] user_name
Add a user
Options:
-h DIR Home directory
-g GECOS GECOS field
-s SHELL Login shell
-G GRP Add user to existing group
-S Create a system user
-D Do not assign a password
-H Do not create home directory
-u UID User id
adjtimex
adjtimex [-q] [-o offset] [-f frequency] [-p timeconstant] [-t tick]
Read and optionally set system timebase parameters. See adjtimex(2).
Options:
-q Quiet
-o offset Time offset, microseconds
-f frequency Frequency adjust, integer kernel units (65536 is 1ppm)
(positive values make clock run faster)
-t tick Microseconds per tick, usually 10000
-p timeconstant
ar
ar [-o] [-v] [-p] [-t] [-x] ARCHIVE FILES
Extract or list FILES from an ar archive
Options:
-o Preserve original dates
-p Extract to stdout
-t List
-x Extract
-v Verbose
arp
Manipulate ARP cache
Options:
-a Display (all) hosts
-s Set new ARP entry
-d Delete a specified entry
-v Verbose
-n Don't resolve names
-i IF Network interface
-D Read from given device
-A, -p AF Protocol family
-H HWTYPE Hardware address type
arping
arping [-fqbDUA] [-c count] [-w timeout] [-I dev] [-s sender] target
Send ARP requests/replies
Options:
-f Quit on first ARP reply
-q Quiet
-b Keep broadcasting, don't go unicast
-D Duplicated address detection mode
-U Unsolicited ARP mode, update your neighbors
-A ARP answer mode, update your neighbors
-c N Stop after sending N ARP requests
-w timeout Time to wait for ARP reply, in seconds
-I dev Interface to use (default eth0)
-s sender Sender IP address
target Target IP address
awk
awk [OPTIONS] [AWK_PROGRAM] [FILE]...
Options:
-v VAR=VAL Set variable
-F SEP Use SEP as field separator
-f FILE Read program from file
basename
basename FILE [SUFFIX]
Strip directory path and .SUFFIX from FILE
beep
beep -f freq -l length -d delay -r repetitions -n
Options:
-f Frequency in Hz
-l Length in ms
-d Delay in ms
-r Repetitions
-n Start new tone
blkid
blkid
Print UUIDs of all filesystems
brctl
brctl COMMAND [BRIDGE [INTERFACE]]
Manage ethernet bridges
Commands:
show Show a list of bridges
addbr BRIDGE Create BRIDGE
delbr BRIDGE Delete BRIDGE
addif BRIDGE IFACE Add IFACE to BRIDGE
delif BRIDGE IFACE Delete IFACE from BRIDGE
setageing BRIDGE TIME Set ageing time
setfd BRIDGE TIME Set bridge forward delay
sethello BRIDGE TIME Set hello time
setmaxage BRIDGE TIME Set max message age
setpathcost BRIDGE COST Set path cost
setportprio BRIDGE PRIO Set port priority
setbridgeprio BRIDGE PRIO Set bridge priority
stp BRIDGE [1|0] STP on/off
bunzip2
bunzip2 [OPTIONS] [FILE]
Uncompress FILE (or standard input if FILE is '-' or omitted)
Options:
-c Write to standard output
-f Force
bzcat
bzcat FILE
Uncompress to stdout
bzip2
bzip2 [OPTIONS] [FILE]...
Compress FILE(s) with bzip2 algorithm.
When FILE is '-' or unspecified, reads standard input. Implies -c.
Options:
-c Write to standard output
-d Decompress
-f Force
-1..-9 Compression level
cal
cal [-jy] [[month] year]
Display a calendar
Options:
-j Use julian dates
-y Display the entire year
cat
cat [-u] [FILE]...
Concatenate FILE(s) and print them to stdout
Options:
-u Use unbuffered i/o (ignored)
catv
catv [-etv] [FILE]...
Display nonprinting characters as ^x or M-x
Options:
-e End each line with $
-t Show tabs as ^I
-v Don't use ^x or M-x escapes
chat
chat EXPECT [SEND [EXPECT [SEND...]]]
Useful for interacting with a modem connected to stdin/stdout.
A script consists of one or more "expect-send" pairs of strings,
each pair is a pair of arguments. Example:
chat '' ATZ OK ATD123456 CONNECT '' ogin: pppuser word: ppppass '~'
chattr
chattr [-R] [- =AacDdijsStTu] [-v version] files...
Change file attributes on an ext2 fs
Modifiers:
- Remove attributes
Add attributes
= Set attributes
Attributes:
A Don't track atime
a Append mode only
c Enable compress
D Write dir contents synchronously
d Do not backup with dump
i Cannot be modified (immutable)
j Write all data to journal first
s Zero disk storage when deleted
S Write file contents synchronously
t Disable tail-merging of partial blocks with other files
u Allow file to be undeleted
Options:
-R Recursively list subdirectories
-v Set the file's version/generation number
chgrp
chgrp [-RhLHPcvf]... GROUP FILE...
Change the group membership of each FILE to GROUP
Options:
-R Recurse
-h Affect symlinks instead of symlink targets
-L Traverse all symlinks to directories
-H Traverse symlinks on command line only
-P Do not traverse symlinks (default)
-c List changed files
-v Verbose
-f Hide errors
chmod
chmod [-Rcvf] MODE[,MODE]... FILE...
Each MODE is one or more of the letters ugoa, one of the
symbols -= and one or more of the letters rwxst
Options:
-R Recurse
-c List changed files
-v List all files
-f Hide errors
chown
chown [-RhLHPcvf]... OWNER[<.|:>[GROUP]] FILE...
Change the owner and/or group of each FILE to OWNER and/or GROUP
Options:
-R Recurse
-h Affect symlinks instead of symlink targets
-L Traverse all symlinks to directories
-H Traverse symlinks on command line only
-P Do not traverse symlinks (default)
-c List changed files
-v List all files
-f Hide errors
chpasswd
chpasswd [--md5|--encrypted]
Read user:password from stdin and update /etc/passwd
Options:
-e,--encrypted Supplied passwords are in encrypted form
-m,--md5 Use MD5 encryption instead of DES
chpst
Change the process state and run PROG
Options:
-u USER[:GRP] Set uid and gid
-U USER[:GRP] Set $UID and $GID in environment
-e DIR Set environment variables as specified by files
in DIR: file=1st_line_of_file
-/ DIR Chroot to DIR
-n NICE Add NICE to nice value
-m BYTES Same as -d BYTES -s BYTES -l BYTES
-d BYTES Limit data segment
-o N Limit number of open files per process
-p N Limit number of processes per uid
-f BYTES Limit output file sizes
-c BYTES Limit core file size
-v Verbose
-P Create new process group
-0 Close standard input
-1 Close standard output
-2 Close standard error
chroot
chroot NEWROOT [PROG [ARGS]]
Run PROG with root directory set to NEWROOT
chrt
chrt [OPTIONS] [PRIO] [PID | PROG [ARGS]]
Manipulate real-time attributes of a process
Options:
-p Operate on pid
-r Set scheduling policy to SCHED_RR
-f Set scheduling policy to SCHED_FIFO
-o Set scheduling policy to SCHED_OTHER
-m Show min and max priorities
chvt
chvt N
Change the foreground virtual terminal to /dev/ttyN
cksum
cksum FILES...
Calculate the CRC32 checksums of FILES
clear
clear
Clear screen
cmp
cmp [-l] [-s] FILE1 [FILE2 [SKIP1 [SKIP2]]]
Compares FILE1 vs stdin if FILE2 is not specified
Options:
-l Write the byte numbers (decimal) and values (octal)
for all differing bytes
-s Quiet
comm
comm [-123] FILE1 FILE2
Compare FILE1 to FILE2, or to stdin if - is specified
Options:
-1 Suppress lines unique to FILE1
-2 Suppress lines unique to FILE2
-3 Suppress lines common to both files
cp
cp [OPTIONS] SOURCE DEST
Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY
Options:
-a Same as -dpR
-d,-P Preserve links
-H,-L Dereference all symlinks (default)
-p Preserve file attributes if possible
-f Force overwrite
-i Prompt before overwrite
-R,-r Recurse
-l,-s Create (sym)links
cpio
cpio -[tiopdmvu] [-F FILE] [-H newc]
Extract or list files from a cpio archive, or create a cpio archive
Main operation mode:
-t List
-i Extract
-o Create
-p Passthrough
Options:
-d Make leading directories
-m Preserve mtime
-v Verbose
-u Overwrite
-F Input file
-H Define format
crond
crond -fbS -l N -d N -L LOGFILE -c DIR
-f Foreground
-b Background (default)
-S Log to syslog (default)
-l Set log level. 0 is the most verbose, default 8
-d Set log level, log to stderr
-L Log to file
-c Working dir
crontab
crontab [-c DIR] [-u USER] [-ler]|[FILE]
-c Crontab directory
-u User
-l List crontab
-e Edit crontab
-r Delete crontab
FILE Replace crontab by FILE ('-': stdin)
cryptpw
cryptpw [OPTIONS] [PASSWORD] [SALT]
Crypt the PASSWORD using crypt(3)
Options:
-P,--password-fd=NUM Read password from fd NUM
-m,--method=TYPE Encryption method TYPE
-S,--salt=SALT
cut
cut [OPTIONS] [FILE]...
Print selected fields from each input FILE to standard output
Options:
-b LIST Output only bytes from LIST
-c LIST Output only characters from LIST
-d CHAR Use CHAR instead of tab as the field delimiter
-s Output only the lines containing delimiter
-f N Print only these fields
-n Ignored
date
date [OPTIONS] [ FMT] [TIME]
Display time (using FMT), or set time
Options:
[-s] TIME Set time to TIME
-u Work in UTC (don't convert to local time)
-R Output RFC-822 compliant date string
-I[SPEC] Output ISO-8601 compliant date string
SPEC='date' (default) for date only,
'hours', 'minutes', or 'seconds' for date and
time to the indicated precision
-r FILE Display last modification time of FILE
-d TIME Display TIME, not 'now'
-D FMT Use FMT for -d TIME conversion
Recognized TIME formats:
hh:mm[:ss]
[YYYY.]MM.DD-hh:mm[:ss]
YYYY-MM-DD hh:mm[:ss]
[[[[[YY]YY]MM]DD]hh]mm[.ss]
dc
dc expression...
Tiny RPN calculator. Operations:
, add, -, sub, *, mul, /, div, %, mod, **, exp, and, or, not, eor,
p - print top of the stack (without altering the stack),
f - print entire stack, o - pop the value and set output radix
(value must be 10 or 16).
Examples: 'dc 2 2 add' -> 4, 'dc 8 8 * 2 2 /' -> 16.
dd
Copy a file with converting and formatting
Options:
if=FILE Read from FILE instead of stdin
of=FILE Write to FILE instead of stdout
bs=N Read and write N bytes at a time
ibs=N Read N bytes at a time
obs=N Write N bytes at a time
count=N Copy only N input blocks
skip=N Skip N input blocks
seek=N Skip N output blocks
conv=notrunc Don't truncate output file
conv=noerror Continue after read errors
conv=sync Pad blocks with zeros
conv=fsync Physically write data out before finishing
Numbers may be suffixed by c (x1), w (x2), b (x512), kD (x1000), k (x1024),
MD (x1000000), M (x1048576), GD (x1000000000) or G (x1073741824)
deallocvt
deallocvt [N]
Deallocate unused virtual terminal /dev/ttyN
delgroup
delgroup [USER] GROUP
Delete group GROUP from the system or user USER from group GROUP
deluser
deluser USER
Delete USER from the system
devmem
devmem ADDRESS [WIDTH [VALUE]]
Read/write from physical address
ADDRESS Address to act upon
WIDTH Width (8/16/...)
VALUE Data to be written
df
df [-Pkmhai] [-B SIZE] [FILESYSTEM...]
Print filesystem usage statistics
Options:
-P POSIX output format
-k 1024-byte blocks (default)
-m 1M-byte blocks
-h Human readable (e.g. 1K 243M 2G)
-a Show all filesystems
-i Inodes
-B SIZE Blocksize
dhcprelay
dhcprelay CLIENT_IFACE[,CLIENT_IFACE2...] SERVER_IFACE [SERVER_IP]
Relay DHCP requests between clients and server
diff
diff [-abdiNqrTstw] [-L LABEL] [-S FILE] [-U LINES] FILE1 FILE2
Compare files line by line and output the differences between them.
This implementation supports unified diffs only.
Options:
-a Treat all files as text
-b Ignore changes in the amount of whitespace
-d Try hard to find a smaller set of changes
-i Ignore case differences
-L Use LABEL instead of the filename in the unified header
-N Treat absent files as empty
-q Output only whether files differ
-r Recursively compare subdirectories
-S Start with FILE when comparing directories
-T Make tabs line up by prefixing a tab when necessary
-s Report when two files are the same
-t Expand tabs to spaces in output
-U Output LINES lines of context
-w Ignore all whitespace
dirname
dirname FILENAME
Strip non-directory suffix from FILENAME
dmesg
dmesg [-c] [-n LEVEL] [-s SIZE]
Print or control the kernel ring buffer
Options:
-c Clear ring buffer after printing
-n LEVEL Set console logging level
-s SIZE Buffer size
dnsd
dnsd [-c config] [-t seconds] [-p port] [-i iface-ip] [-d]
Small static DNS server daemon
Options:
-c Config filename
-t TTL in seconds
-p Listening port
-i Listening ip (default all)
-d Daemonize
dos2unix
dos2unix [OPTION] [FILE]
Convert FILE in-place from DOS to Unix format.
When no file is given, use stdin/stdout.
Options:
-u dos2unix
-d unix2dos
dpkg
dpkg [-ilCPru] [-F option] package_name
Install, remove and manage Debian packages
Options:
-i Install the package
-l List of installed packages
-C Configure an unpackaged package
-F depends Ignore dependency problems
-P Purge all files of a package
-r Remove all but the configuration files for a package
-u Unpack a package, but don't configure it
du
du [-aHLdclsxhmk] [FILE]...
Summarize disk space used for each FILE and/or directory.
Disk space is printed in units of 1024 bytes.
Options:
-a Show file sizes too
-H Follow symlinks on command line
-L Follow all symlinks
-d N Limit output to directories (and files with -a) of depth < N
-c Show grand total
-l Count sizes many times if hard linked
-s Display only a total for each argument
-x Skip directories on different filesystems
-h Sizes in human readable format (e.g., 1K 243M 2G )
-m Sizes in megabytes
-k Sizes in kilobytes (default)
dumpkmap
dumpkmap > keymap
Print a binary keyboard translation table to standard output
dumpleases
dumpleases [-r|-a] [-f LEASEFILE]
Display DHCP leases granted by udhcpd
Options:
-f,--file=FILE Leases file to load
-r,--remaining Interpret lease times as time remaining
-a,--absolute Interpret lease times as expire time
echo
echo [-neE] [ARG...]
Print the specified ARGs to stdout
Options:
-n Suppress trailing newline
-e Interpret backslash-escaped characters (i.e., \t=tab)
-E Disable interpretation of backslash-escaped characters
ed
ed
eject
eject [-t] [-T] [DEVICE]
Eject specified DEVICE (or default /dev/cdrom)
Options:
-s SCSI device
-t Close tray
-T Open/close tray (toggle)
env
env [-iu] [-] [name=value]... [PROG [ARGS]]
Print the current environment or run PROG after setting up
the specified environment
Options:
-, -i Start with an empty environment
-u Remove variable from the environment
envdir
envdir dir prog args
Set various environment variables as specified by files
in the directory dir and run PROG
envuidgid
envuidgid account prog args
Set $UID to account's uid and $GID to account's gid and run PROG
expand
expand [-i] [-t NUM] [FILE|-]
Convert tabs to spaces, writing to standard output
Options:
-i,--initial Do not convert tabs after non blanks
-t,--tabs=N Tabstops every N chars
expr
expr EXPRESSION
Print the value of EXPRESSION to standard output
EXPRESSION may be:
ARG1 | ARG2 ARG1 if it is neither null nor 0, otherwise ARG2
ARG1 & ARG2 ARG1 if neither argument is null or 0, otherwise 0
ARG1 < ARG2 1 if ARG1 is less than ARG2, else 0. Similarly:
ARG1 <= ARG2
ARG1 = ARG2
ARG1 != ARG2
ARG1 >= ARG2
ARG1 > ARG2
ARG1 ARG2 Sum of ARG1 and ARG2. Similarly:
ARG1 - ARG2
ARG1 * ARG2
ARG1 / ARG2
ARG1 % ARG2
STRING : REGEXP Anchored pattern match of REGEXP in STRING
match STRING REGEXP Same as STRING : REGEXP
substr STRING POS LENGTH Substring of STRING, POS counted from 1
index STRING CHARS Index in STRING where any CHARS is found, or 0
length STRING Length of STRING
quote TOKEN Interpret TOKEN as a string, even if
it is a keyword like 'match' or an
operator like '/'
(EXPRESSION) Value of EXPRESSION
Beware that many operators need to be escaped or quoted for shells.
Comparisons are arithmetic if both ARGs are numbers, else
lexicographical. Pattern matches return the string matched between
\( and \) or null; if \( and \) are not used, they return the number
of characters matched or 0.
fakeidentd
fakeidentd [-fiw] [-b ADDR] [STRING]
Provide fake ident (auth) service
Options:
-f Run in foreground
-i Inetd mode
-w Inetd 'wait' mode
-b ADDR Bind to specified address
STRING Ident answer string (default: nobody)
false
false
Return an exit code of FALSE (1)
fbset
fbset [OPTIONS] [MODE]
Show and modify frame buffer settings
fbsplash
fbsplash -s IMGFILE [-c] [-d DEV] [-i INIFILE] [-f CMD]
Options:
-s Image
-c Hide cursor
-d Framebuffer device (default /dev/fb0)
-i Config file (var=value):
BAR_LEFT,BAR_TOP,BAR_WIDTH,BAR_HEIGHT
BAR_R,BAR_G,BAR_B
-f Control pipe (else exit after drawing image)
commands: 'NN' (% for progress bar) or 'exit'
fdflush
fdflush DEVICE
Force floppy disk drive to detect disk change
fdformat
fdformat [-n] DEVICE
Format floppy disk
Options:
-n Don't verify after format
fdisk
fdisk [-ul] [-C CYLINDERS] [-H HEADS] [-S SECTORS] [-b SSZ] DISK
Change partition table
Options:
-u Start and End are in sectors (instead of cylinders)
-l Show partition table for each DISK, then exit
-b 2048 (for certain MO disks) use 2048-byte sectors
-C CYLINDERS Set number of cylinders/heads/sectors
-H HEADS
-S SECTORS
find
find [PATH...] [EXPRESSION]
Search for files. The default PATH is the current directory,
default EXPRESSION is '-print'
EXPRESSION may consist of:
-follow Dereference symlinks
-xdev Don't descend directories on other filesystems
-maxdepth N Descend at most N levels. -maxdepth 0 applies
tests/actions to command line arguments only
-mindepth N Do not act on first N levels
-name PATTERN File name (w/o directory name) matches PATTERN
-iname PATTERN Case insensitive -name
-path PATTERN Path matches PATTERN
-regex PATTERN Path matches regex PATTERN
-type X File type is X (X is one of: f,d,l,b,c,...)
-perm NNN Permissions match any of ( NNN), all of (-NNN),
or exactly (NNN)
-mtime DAYS Modified time is greater than ( N), less than (-N),
or exactly (N) days
-mmin MINS Modified time is greater than ( N), less than (-N),
or exactly (N) minutes
-newer FILE Modified time is more recent than FILE's
-inum N File has inode number N
-user NAME File is owned by user NAME (numeric user ID allowed)
-group NAME File belongs to group NAME (numeric group ID allowed)
-depth Process directory name after traversing it
-size N[bck] File size is N (c:bytes,k:kbytes,b:512 bytes(def.)).
/-N: file size is bigger/smaller than N
-print Print (default and assumed)
-print0 Delimit output with null characters rather than
newlines
-exec CMD ARG ; Run CMD with all instances of {} replaced by the
matching files
-prune Stop traversing current subtree
-delete Delete files, turns on -depth option
(EXPR) Group an expression
findfs
findfs LABEL=label or UUID=uuid
Find a filesystem device based on a label or UUID
flash_lock
flash_lock MTD_DEVICE OFFSET SECTORS
Lock part or all of an MTD device. If SECTORS is -1, then all sectors
will be locked, regardless of the value of OFFSET
flash_unlock
flash_unlock MTD_DEVICE
Unlock an MTD device
fold
fold [-bs] [-w WIDTH] [FILE]
Wrap input lines in each FILE (standard input by default), writing to
standard output
Options:
-b Count bytes rather than columns
-s Break at spaces
-w Use WIDTH columns instead of 80
free
free
Display the amount of free and used system memory
freeramdisk
freeramdisk DEVICE
Free all memory used by the specified ramdisk
fsck
fsck [-ANPRTV] [-C fd] [-t fstype] [fs-options] [filesys...]
Check and repair filesystems
Options:
-A Walk /etc/fstab and check all filesystems
-N Don't execute, just show what would be done
-P With -A, check filesystems in parallel
-R With -A, skip the root filesystem
-T Don't show title on startup
-V Verbose
-C n Write status information to specified filedescriptor
-t type List of filesystem types to check
fsck.minix
fsck.minix [-larvsmf] /dev/name
Check MINIX filesystem
Options:
-l List all filenames
-r Perform interactive repairs
-a Perform automatic repairs
-v Verbose
-s Output superblock information
-m Show "mode not cleared" warnings
-f Force file system check
fsync
fsync [OPTIONS] FILE...Write files' buffered blocks to disk
Options:
-d Avoid syncing metadata
ftpd
ftpd [-wvS] [-t N] [-T N] [DIR]
Anonymous FTP server
ftpd should be used as an inetd service.
ftpd's line for inetd.conf:
21 stream tcp nowait root ftpd ftpd /files/to/serve
It also can be ran from tcpsvd:
tcpsvd -vE 0.0.0.0 21 ftpd /files/to/serve
Options:
-w Allow upload
-v Log to stderr
-S Log to syslog
-t,-T Idle and absolute timeouts
DIR Change root to this directory
ftpget
ftpget [OPTIONS] HOST LOCAL_FILE REMOTE_FILE
Retrieve a remote file via FTP
Options:
-c,--continue Continue previous transfer
-v,--verbose Verbose
-u,--username Username
-p,--password Password
-P,--port Port number
ftpput
ftpput [OPTIONS] HOST REMOTE_FILE LOCAL_FILE
Store a local file on a remote machine via FTP
Options:
-v,--verbose Verbose
-u,--username Username
-p,--password Password
-P,--port Port number
fuser
fuser [OPTIONS] FILE or PORT/PROTO
Find processes which use FILEs or PORTs
Options:
-m Find processes which use same fs as FILEs
-4 Search only IPv4 space
-6 Search only IPv6 space
-s Silent: just exit with 0 if any processes are found
-k Kill found processes (otherwise display PIDs)
-SIGNAL Signal to send (default: TERM)
getopt
getopt [OPTIONS]
Options:
-a,--alternative Allow long options starting with single -
-l,--longoptions=longopts Long options to be recognized
-n,--name=progname The name under which errors are reported
-o,--options=optstring Short options to be recognized
-q,--quiet Disable error reporting by getopt(3)
-Q,--quiet-output No normal output
-s,--shell=shell Set shell quoting conventions
-T,--test Test for getopt(1) version
-u,--unquoted Don't quote the output
getty
getty [OPTIONS] BAUD_RATE TTY [TERMTYPE]
Open a tty, prompt for a login name, then invoke /bin/login
Options:
-h Enable hardware (RTS/CTS) flow control
-i Do not display /etc/issue before running login
-L Local line, do not do carrier detect
-m Get baud rate from modem's CONNECT status message
-w Wait for a CR or LF before sending /etc/issue
-n Do not prompt the user for a login name
-f ISSUE_FILE Display ISSUE_FILE instead of /etc/issue
-l LOGIN Invoke LOGIN instead of /bin/login
-t SEC Terminate after SEC if no username is read
-I INITSTR Send INITSTR before anything else
-H HOST Log HOST into the utmp file as the hostname
grep
grep [-HhrilLnqvsoweFEABCz] PATTERN [FILE]...
Search for PATTERN in each FILE or standard input
Options:
-H Prefix output lines with filename where match was found
-h Suppress the prefixing filename on output
-r Recurse
-i Ignore case distinctions
-l List names of files that match
-L List names of files that do not match
-n Print line number with output lines
-q Quiet. Return 0 if PATTERN is found, 1 otherwise
-v Select non-matching lines
-s Suppress file open/read error messages
-c Only print count of matching lines
-o Show only the part of a line that matches PATTERN
-m MAX Match up to MAX times per file
-w Match whole words only
-F PATTERN is a set of newline-separated strings
-E PATTERN is an extended regular expression
-e PTRN Pattern to match
-f FILE Read pattern from file
-A Print NUM lines of trailing context
-B Print NUM lines of leading context
-C Print NUM lines of output context
-z Input is NUL terminated
gunzip
gunzip [OPTIONS] [FILE]...
Uncompress FILEs (or standard input)
Options:
-c Write to standard output
-f Force
-t Test file integrity
gzip
gzip [OPTIONS] [FILE]...
Compress FILEs (or standard input)
Options:
-c Write to standard output
-d Decompress
-f Force
hd
hd FILE...
hd is an alias for hexdump -C
hdparm
hdparm [OPTIONS] [DEVICE]
Options:
-a Get/set fs readahead
-A Set drive read-lookahead flag (0/1)
-b Get/set bus state (0 == off, 1 == on, 2 == tristate)
-B Set Advanced Power Management setting (1-255)
-c Get/set IDE 32-bit IO setting
-C Check IDE power mode status
-d Get/set using_dma flag
-D Enable/disable drive defect-mgmt
-f Flush buffer cache for device on exit
-g Display drive geometry
-h Display terse usage information
-i Display drive identification
-I Detailed/current information directly from drive
-k Get/set keep_settings_over_reset flag (0/1)
-K Set drive keep_features_over_reset flag (0/1)
-L Set drive doorlock (0/1) (rem***ble harddisks only)
-m Get/set multiple sector count
-n Get/set ignore-write-errors flag (0/1)
-p Set PIO mode on IDE interface chipset (0,1,2,3,4,...)
-P Set drive prefetch count
-Q Get/set DMA tagged-queuing depth (if supported)
-r Get/set readonly flag (DANGEROUS to set)
-R Register an IDE interface (DANGEROUS)
-S Set standby (spindown) timeout
-t Perform device read timings
-T Perform cache read timings
-u Get/set unmaskirq flag (0/1)
-U Un-register an IDE interface (DANGEROUS)
-v Defaults; same as -mcudkrag for IDE drives
-V Display program version and exit immediately
-w Perform device reset (DANGEROUS)
-W Set drive write-caching flag (0/1) (DANGEROUS)
-x Tristate device for hotswap (0/1) (DANGEROUS)
-X Set IDE xfer mode (DANGEROUS)
-y Put IDE drive in standby mode
-Y Put IDE drive to sleep
-Z Disable Seagate auto-powersaving mode
-z Re-read partition table
head
head [OPTIONS] [FILE]...
Print first 10 lines of each FILE to standard output.
With more than one FILE, precede each with a header giving the
file name. With no FILE, or when FILE is -, read standard input.
Options:
-n NUM Print first NUM lines instead of first 10
-c NUM Output the first NUM bytes
-q Never output headers giving file names
-v Always output headers giving file names
hexdump
hexdump [-bcCdefnosvxR] FILE...
Display file(s) or standard input in a user specified format
Options:
-b One-byte octal display
-c One-byte character display
-C Canonical hex ASCII, 16 bytes per line
-d Two-byte decimal display
-e FORMAT STRING
-f FORMAT FILE
-n LENGTH Interpret only LENGTH bytes of input
-o Two-byte octal display
-s OFFSET Skip OFFSET bytes
-v Display all input data
-x Two-byte hexadecimal display
-R Reverse of 'hexdump -Cv'
