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-The following document includes a continuous description of the current
-commands, functions and utilities included in the busybox.
-
-John Cooper
-johnc@lineo.com
-
-_______________________________________________________________________________________________________
-
-
-
-
- BusyBox 0.38, Functions and the Arguments they Support
-
-
-New Apps that have been added to BusyBox since this document was written:
- ping, hostname, mkfifo, free, tail, du, tee, head, sort, uniq, lsmod, rmmod, fbset, and loadacm.
-
-
-
-______________________________________________________________________________________________________
-
-
-
-
-
-cat [file]
- Display file contents to standard output.
-
-
-
-
-_______________________________________________________________________________________________________
-
-
-
-
-
-chmod [-R] Mode,[Mode] file
-
- Change file access permissions (mode) of one or more files.
-
- -R Follows the directory tree from the current location thru all sub-directories,
-
- applying changes.
-
- Mode = u User
-
- g Group
-
- o Other
-
- a All
-
- Permission = r Read
-
- w Write
-
- s Set user (or group) ID
-
- t Sticky bit file cannot be removed by other
-
- than the owner.
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-chown [option] owner[group]file
-
- Change owner and (or) group of file to owner and (or) group.
-
- Only the current owner or a priveleged user may change an owner.
-
- -R Follows the directory tree from the current location thru all sub-directories, applying
-
- changes.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-
-chgrp [option] newgroup file
-
- Change group of file or files to new group name or ID number located in /etc/group.
-
- Only the current owner or a priveleged user may change the group name or ID
-
- -R Follows the directory tree from the current location thru all sub-directories,
-
- applying changes.
-
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-chroot NEWROOT [Command...] (System Admin Command)
-
- Run command with root directory set to NEWROOT. Only the current owner or a priveleged
-
- user may use this command.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-clear
-
- Clear screen.
-
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-cp [option] fileA fileB
-
- Copy fileA to fileB or fileA to directory maintaining fileA name.
-
- -a archive Maintain file attributes whenever possible. Same as -dpR
-
- -d no dereference Maintain hard link relationships between fileA and fileB.
-
- No dereference of symbolic links.
-
- -p maintain file Maintain all file attributes and information including owner
-
- attributes group permissions and time information.
-
- -R recursive Copies directories recursively
-
-
-
-
-
-_________________________________________________________________________________________________________
-
-
-
-
-
-date [option [+format] [date]
-
-date [option] [MMDDhhmm[[CC]YY][.SS]]
-
- Display the current system date and time.
-
- -R RFC-822 string Output an RFC-822 compliant date string.
-
- -s set DATE Set date where date is entered in MMDDhhmm etc. format.
-
- -u universal Print or set Coordinated Universal Time.
-
-
-
-
-
-_______________________________________________________________________________________________________
-
-
-
-
-
-
-dd [if=name] [of=name] [bs=n] [count=n]
-
-
- Copy a file, converting and formatting according to options. Most useful when copying from
-
- physical input and output devices.
-
- if=fileA (instead of standard input)
-
- of=fileB (instead of standard output)
-
- bs=n Read and write N Bytes at a time.
-
- count=n Copy only n input blocks.
-
- Bytes may be suffixed by k for x1024, b for x512 and w for x2.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-df
-
-
- Display filesystem, number of blocks used, number of blocks available, number of blocks in use,
-
- and mount point.
-
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-
-dmesg [-c] [-n level] [-s bufsize] (System Admin Command)
-
-
- Display system control messages. Stored in the kernel ring buffer are all messages since the
-
- last system boot, or the most recent if the buffer had been full.
-
-
- -c Clear buffer after printing messages.
-
- -n level Set the level of system message to be displayed on the console.
-
- -s bufsize Display the size of the kernel ring buffer.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-
-find [PATH] [EXPRESSION]
-
- Search for files in the current directory, and all subdirectories for patterns that match
-
- expression. Expressions may consist of the following.
-
- -follow Dereference symbolic links.
-
- -name PATTERN Find files that match PATTERN. Metacharacters should be escaped or
-
- quoted.
-
- -print Print full file name, followed by a newline, to standard out.
-
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-chvt N
-
- Change foreground virtual terminal to /dev/ttyN.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-deallocvt N
-
- Deallocate unused virtual terminal /dev/ttyN.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-fsck.minix [-larvsmf] /dev/name
-
- Perform a consistency check for minix filesystems.
-
- -l List filenames.
-
- -r Perform interactive repairs.
-
- -a Perform automatic repairs
-
- -v Verbose
-
- -s Output superblock information
-
- -m Activates minix-like "mode not cleared" warnings.
-
- -f Force file system check.
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-mkfs.minix [-c | -l filename ] [-nXX] [-iXX] /dev/name [blocks]
-
- Make a minix file system.
-
- -c Check device for bad blocks.
-
- -n [ 14|30 ] Specify max length of filenames.
-
- -i Specify number of inodes for filesystem.
-
- -l filename
-
- Read the bad blocks list from filename.
-
- -v Make a minix version 2 filesystem.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-grep [OPTIONS] PATTERN [FILE]
-
- Search for PATTERN in each FILE or from standard input.
-
- -h Suppress prefixing filename on output.
-
- -i Ignore case distinctions.
-
- -n Print line number with output lines.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-init
-
- The parent of all processes. Only to be run by the kernel.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-kill [ -s sigspec | -signum | -sigspec ] [pid | job ] or
-
-kill -l [ exitstatus ]
-
- Currently no information help page for this command
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-ln [option] TARGET... LINK_NAME|DIRECTORY
-
- Create a link named LINK_NAME or DIRECTORY to TARGET.
-
- -s Make symbolic links instead of hard links.
-
- -f Remove existing destination files.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-ls [ -1acdelnpuxACF ] [FILENAMES]
-
- List contents of directories.
-
- -1 Single entry per column of output.
-
- -a All files including hidden files beginning with a ..
-
- -c Files are listed by status change time.
-
- -d List directories, not there contents.
-
- -e List both full date and full time
-
- -l List in long format including permissions, owner, size
-
- modification time etc.
-
- -n Similar to -l, except use group ID and user ID instead
-
- of owner and group names.
-
- -p Directories are marked with a /.
-
- -u Display files sorted by file access time.
-
- -x Display files across the screen in rows.
-
- -A Display hidden and all other files except . and ...
-
- -C (Default, display files in columns)
-
- -F Tag files by type by appending:
-
- / to directories
-
- * to executables
-
- @ to symbolic links
-
- | to fifo's
-
- = to sockets
-
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-mkdir [OPTION] directory
-
- Create directories if they do not already exist. You must have write permission to create
-
- directories. Default mode can be modified by users umask.
-
- -m Used to set permission mode. (See chmod description)
-
- -p Make parent directories if they don't already exist. Return error code if
-
- they already exist.
-
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-mknod NAME TYPE MAJOR MINOR
-
-Make block or character special files.
-
-TYPEs include:
- b: Make a block (buffered) device.
- c or u: Make a character (un-buffered) device.
- p: Make a named pipe. Major and minor are ignored for named pipes.
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-
-mkswap [-c] [ -v0|-v1 ] device [block-count]
-
- Prepare a disk partition to be used as a swap partition.
-
- -c Check for read-ability.
-
- -v0 Make version 0 swap [max 128 megs]
-
- -v1 Make version 1 swap [big |] default for
-
- kernels > 2.1.117.
-
- block-count
-
- Number of blocks to use. (Default is the entire
-
- partition).
-
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-more [file]
-
- Display file one screen page at a time.
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-mount [flags]
-
-mount [flags] device directory [-o options, more options ]
-
- Mount a filesystem for file access.
-
- -a Mount all file systems in fstab.
-
- -o option
-
- async/sync: Writes are asynchronous/synchronous.
-
- dev/nodev: Allow use of special device files
-
- /disallow them.
-
- exec/noexec: Allow use of executable files
-
- /disallow them.
-
- suid/nosuid: Allow set-user-id-root programs
-
- /disallow them.
-
- remount: Remount a currently-mounted filesystem
-
- changing it's flags.
-
- ro/rw: Mount for read-only/read-write.
-
- (There are more flags specific to each filesystem.
-
- See the written documentation for those.)
-
- -r Mount the filesystem read only.
-
- -t FILESYSTEM TYPE
-
- Specify the filesystem type.
-
- -w Mount for reading and writing default
-
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-
-mv fileA fileB or
-
-mv fileA dirA
-
- Move fileA to fileB. (Renames fileA to fileB)
-
- Move fileA to dirA (Moves fileA into dirA)
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-ps
-
- Report process status. No options are currently supported.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-pwd
-
- Print working directory
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-reboot
-
- Reboot system. No options are currently supported.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-rm [option] file
-
- Remove or unlink the files.
-
- -f Remove existing destinations. Never prompt.
-
- -r or -R Remove contents of directories recursively.
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-rmdir [OPTION] ... directory
-
- Remove directories if they are empty.
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-sed
- Usage: sed [-n] -e script [file...]
-
- Allowed sed scripts come in the following form:
- 'ADDR [!] COMMAND'
-
- where address ADDR can be:
- NUMBER Match specified line number
- $ Match last line
- /REGEXP/ Match specified regexp
- (! inverts the meaning of the match)
-
- and COMMAND can be:
- s/regexp/replacement/[igp]
- which attempt to match regexp against the pattern space
- and if successful replaces the matched portion with replacement.
-
- aTEXT
- which appends TEXT after the pattern space
- Options:
- -e add the script to the commands to be executed
- -n suppress automatic printing of pattern space
-
- This version of sed matches full regular expresions.
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-sleep N
-
- Pause for N seconds.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-tar -[cxtvOf] [tarFileName] [file]
-
- Create, extract or list files from a tar file.
-
- c=create
-
- x=extract
-
- t=list contents
-
- v=verbose
-
- O=extract to stdout
-
- f=tarfile or "-" for standard input
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-swapon device
-
- Start swapping virtual memory pages on the given device.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-swapoff device
-
- Stop swapping virtual memory pages on the given device.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-sync
-
- Write all buffered filesystem blocks to disk.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-touch [-c] file [file...]
-
- Update the last modified date on given file(s).
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-true
-
- A null command that returns a successful 0 exit status code. (See false)
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-false
-
- A null command that returns an unsuccessful or non-zero exit status.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-uname [option]
-
- Print certain system information. With no option, same as -s.
-
- -a Display all information
-
- -m Display machine hardware type.
-
- -n Display machine network node hostname.
-
- -r Display OS release
-
- -s Display OS Name.
-
- -p Display Host processor type.
-
- -v Display OS Version.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-umount [flags] filesystem | directory
-
- Unmounts designated filesystem previously mounted on device.
-
- -a Unmount all file systems.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-update
-
-cvs update [options] files
-
- Incorporates recent changes from the repository into files in your working directory. No
-
- options are currently supported.
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-zcat [options] files
-
- Usage: zcat [OPTION]... FILE
-
- Uncompress FILE (or standard input if FILE is '-').
- (When invoked as zcat, defaults to having -c turned on)
-
- Options:
- -c Write output to standard output
- -t Test compressed file integrity
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-gunzip (Same as zcat, but without the "-c" option.)
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-gzip [OPTION]... FILE
-
- Compress FILE with maximum compression.
- When FILE is -, reads standard input. Implies -c.
-
- Options:
- -c Write output to standard output instead of FILE.gz
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-
-loadfont
-
- No information available with --help.
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-loadkmap
-
- No information available with --help
-
-
-
-
-
-________________________________________________________________________________________________________
-
-
-
-
-
-linuxrc
-
- No information available with --help
-
-
-
-
-
-________________________________________________________________________________________________________
-