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BusyBox-Commands
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Besides the Kernel the most important part of an embedded system is BusyBox. It is labeled The Swiss Army Knife of Embedded Linux by its developer team. BusyBox offers more than 430 commands, modular at compile time, called applets. It consists of the busybox Executable containing all the code and numerous SymLinks for each command which has been compiled in. This is an index of currently 265 commands which have been found in FRITZ!OS.
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BusyBox-Commands[edit]
Daily updated index of all busybox commands found during firmware scans. Last update: 2019-12-11 04:57 GMT.
The label (bbcmd) in the Command column shows there are other objects in this wiki using this name.
The Mod column shows the amount of models using the respective command. Click the column header to sort by this number.
The path <bb> means the applet could be located in the busybox binary and could be called busybox <command>.Dead Link! in the Description column means the link points to an applet which is not compiled into busybox.
The path <ash> means that this is an ash builtin command, most of these can only be called from within ash.
Note that some short commands marked Intern may well be false positives.
Goto: A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z - Index
| Command | Mod | Description | Type | Path | Origin |
|---|---|---|---|---|---|
| alias | 120 | Create a shell alias or list all defined aliases. | ash | <ash> | busybox |
| ar | 42 | Extract or list FILES from an ar archive. | Intern | <bb> | busybox |
| arp | 120 | Manipulate ARP cache. | Link | /sbin, <bb> | busybox |
| arping | 66 | Send ARP requests/replies | Link | /usr/bin, /usr/sbin, <bb> | busybox |
| ash | 120 | BusyBox builtin shell. | Link | /bin, <bb> | busybox |
| base64 (bbcmd) | 35 | Uudecode a file. | Link | /bin, <bb> | busybox |
| basename | 120 | Strip directory path and .suffix from a filename. | Link | /usr/bin, <bb> | busybox |
| bash (bbcmd) | 54 | Alias name for ash. | Link | /bin, <bb> | busybox |
| bbconfig | 11 | Print the config file used by the BusyBox build. Dead link! | Link | /bin | busybox |
| bc | 16 | Arbitrary precision calculator. | Intern | <bb> | busybox |
| bg | 120 | Run jobs in the background. | ash | <ash> | busybox |
| brctl (bbcmd) | 66 | Manage ethernet Network-Bridges. | Link | /usr/sbin, <bb> | busybox |
| break | 120 | Exit from a for, while or until loop. | ash | <ash> | busybox |
| bunzip2 (bbcmd) | 66 | Uncompress a bzip2 file (or stdin if filename is omitted). | Link | /usr/bin, <bb> | busybox |
| busybox | 120 | The BusyBox executable itself. Contains the code for all applets. | Exec | /bin | busybox |
| bzcat (bbcmd) | 66 | Uncompress a bzip2 file to stdout. | Link | /usr/bin, <bb> | busybox |
| bzip2 (bbcmd) | 66 | Compress files using the bzip2 algorithm. | Link | /usr/bin, <bb> | busybox |
| case | 120 | Selectively execute commands corrosponding to a list of patterns. | ash | <ash> | busybox |
| cat | 120 | Concatenate files and print them to stdout. | Link | /bin, <bb> | busybox |
| cd | 120 | Change the current working directory. | ash | <ash> | busybox |
| chattr (bbcmd) | 11 | Change file attributes on an ext2 filesystem. Dead link! | Link | /bin | busybox |
| chdir | 120 | Change the current working directory. | ash | <ash> | busybox |
| chgrp | 77 | Change the group membership of files. | Link | /bin, <bb> | busybox |
| chmod | 120 | Change file mode bits of files. | Link | /bin, <bb> | busybox |
| chown | 66 | Change the owner and/or group of files. | Link | /bin, <bb> | busybox |
| chroot | 66 | Run a program with an alternative root directory. | Link | /usr/sbin, <bb> | busybox |
| clear | 52 | Clear the console screen. | Link | /usr/bin, <bb> | busybox |
| cmp | 82 | Compares a file vs stdin or another file. | Link | /usr/bin, <bb> | busybox |
| command | 66 | Execute a simple command. | ash | <ash> | busybox |
| continue | 120 | Continue a for, while or until loop. | ash | <ash> | busybox |
| cp | 120 | Copy one file to a destination file or more files to a destination directory. | Link | /bin, <bb> | busybox |
| cut | 66 | Print selected fields from each input file to standard output | Link | /usr/bin, <bb> | busybox |
| date | 120 | Display time (using a format), or set time | Link | /bin, <bb> | busybox |
| dc | 27 | Tiny RPN calculator. | Intern | <bb> | busybox |
| dd | 105 | Convert and copy a file. | Link | /bin, <bb> | busybox |
| df | 102 | Print filesystem usage statistics. | Link | /bin, <bb> | busybox |
| dirname | 120 | Strip non-directory suffix from a filename. | Link | /usr/bin, <bb> | busybox |
| dmesg (bbcmd) | 120 | Print or control the kernel ring buffer. | Link | /bin, <bb> | busybox |
| dnsdomainname | 66 | Show the system's DNS domain name. | Link | /bin, <bb> | busybox |
| do | 120 | Marks the beginning of a for, while or until loop body. | ash | <ash> | busybox |
| done | 120 | Marks the end of a for, while or until loop body. | ash | <ash> | busybox |
| dot | 120 | Real name: '.'. Execute the named script in the current shell. | Intern | <bb> | busybox |
| du | 95 | Summarize disk space used for each file and/or directory. | Link | /usr/bin, <bb> | busybox |
| e2fsck (bbcmd) | 11 | Check a Linux ext file system. Dead link! | Link | /sbin | busybox |
| e2label | 11 | Change the label on an ext filesystem. Dead link! | Link | /sbin | busybox |
| echo | 120 | Print the specified args to stdout | Link, ash | /bin, <ash> | busybox |
| ed | 38 | Line-oriented text editor. | Intern | <bb> | busybox |
| egrep | 110 | Print lines matching a pattern, grep using extended regular expression. | Link | /bin, <bb> | busybox |
| elif | 120 | Execute commands if the new condition is true and the previous was false. | ash | <ash> | busybox |
| else | 120 | Execute commands if the previous conditions were false. | ash | <ash> | busybox |
| env (bbcmd) | 120 | Print the current environment or run a program after setting up. | Link | /usr/bin, <bb> | busybox |
| esac | 120 | Marks the end of a case clause. | ash | <ash> | busybox |
| ether-wake | 105 | Send a magic packet to wake up a machine. | Link | /usr/bin, <bb> | busybox |
| eval | 120 | Construct command by concatenating arguments. | ash | <ash> | busybox |
| exec | 120 | Execute commands and open, close, or copy file descriptors. | ash | <ash> | busybox |
| exit | 120 | Cause the shell to exit. | ash | <ash> | busybox |
| export | 120 | Set the export attribute for variables. | ash | <ash> | busybox |
| expr | 66 | Print the value of an expression to standard output. | Link | /usr/bin, <bb> | busybox |
| factor | 2 | Print the prime factors of each specified integer number. | Intern | <bb> | busybox |
| false | 120 | Return an exit code of FALSE (1). | Link, ash | /bin, <ash> | busybox |
| fg | 120 | Run jobs in the foreground. | ash | <ash> | busybox |
| fgconsole | 64 | Print the number of active virtual terminals. | Intern | <bb> | busybox |
| fgrep | 120 | Print lines matching a pattern, grep using fixed stings. | Link | /bin, <bb> | busybox |
| fi | 120 | Marks the end of an if / elif / else clause body. | ash | <ash> | busybox |
| find | 114 | Search for files. The default path is the current directory, | Link | /usr/bin, <bb> | busybox |
| findfs | 11 | Find a filesystem device based on a label or UUID. Dead link! | Link | /sbin | busybox |
| flock | 64 | Manage locks from shell scripts. | Intern | <bb> | busybox |
| fold | 11 | Wrap input lines in each file (standard input by default). Dead link! | Link | /usr/bin | busybox |
| for | 120 | Execute commands in the loop for each member of a list or expression. | ash | <ash> | busybox |
| free | 120 | Display the amount of free and used system memory | Link | /usr/bin, <bb> | busybox |
| fsck (bbcmd) | 11 | Check and repair filesystems. Dead link! | Link | /sbin | busybox |
| fstrim | 40 | Discard unused blocks on mounted filesystem. | Intern | <bb> | busybox |
| fsync | 83 | Write files' buffered blocks to disk. | Intern | <bb> | busybox |
| ftpget | 66 | Retrieve a remote file via FTP. | Link | /usr/bin, <bb> | busybox |
| ftpput | 66 | Store a local file on a remote machine via FTP. | Link | /usr/bin, <bb> | busybox |
| fuser | 33 | Find processes which use the specified files or ports. | Link | /usr/bin, <bb> | busybox |
| getopt | 120 | Parse commandline options. | Link | /bin, <bb> | busybox |
| getopts | 66 | Parse commandline options. | ash | <ash> | busybox |
| grep | 120 | Search for a pattern in each file or standard input. | Link | /bin, <bb> | busybox |
| groups | 64 | Print the groups a user is in. | Intern | <bb> | busybox |
| gunzip | 66 | Uncompress gzip files (or standard input) | Link | /bin, <bb> | busybox |
| gzip | 66 | Compress files (or standard input) using gzip algorithm. | Link | /bin, <bb> | busybox |
| halt | 118 | Halt the a machine. | Link | /sbin, <bb> | busybox |
| hash | 120 | Remember or report command locations | ash | <ash> | busybox |
| hd | 41 | hd is an alias for hexdump -C. | Intern | <bb> | busybox |
| hdparm | 17 | Get/set harddisk device parameters. | Link | /sbin, <bb> | busybox |
| head | 44 | Print first 10 lines of each file to standard output. | Link | /usr/bin, <bb> | busybox |
| help | 96 | Print the BusyBox help screen. | ash | <ash> | busybox |
| hexdump | 1 | Display file contents in hexadecimal, decimal, octal, or ascii. | Intern | <bb> | busybox |
| history | 40 | List or modify the commandline history. | ash | <ash> | busybox |
| hostname | 118 | Get or set hostname or DNS domain name | Link | /bin, <bb> | busybox |
| id | 82 | Print information about specified or current user | Link | /usr/bin, <bb> | busybox |
| if | 120 | Execute commands if the test condition is true. | ash | <ash> | busybox |
| ifconfig | 120 | Configure a network interface. | Link | /sbin, <bb> | busybox |
| ifdown | 110 | Bring a network interface down. | Link | /sbin, <bb> | busybox |
| ifup | 110 | Bring a network interface up. | Link | /sbin, <bb> | busybox |
| in | 120 | Marks the beginning of a list of words in a for clause. | ash | <ash> | busybox |
| inetd (bbcmd) | 90 | Listen for network connections and launch programs. | Link | /usr/sbin, <bb> | busybox |
| init (bbcmd) | 120 | Init is the parent of all processes. | Link | /sbin, <bb> | busybox |
| insmod | 120 | Load the specified kernel modules into the kernel | Link | /sbin, <bb> | busybox |
| iostat (bbcmd) | 64 | Report cpu and i/o statistics for devices. | Link | /bin, <bb> | busybox |
| ip (bbcmd) | 66 | Show / manipulate routing, devices, policy routing and tunnels. | Link | /bin, /sbin, <bb> | busybox |
| ipaddr | 41 | Alias for 'ip address'. | Link | /bin, /sbin, <bb> | busybox |
| iplink | 41 | Alias for 'ip link'. | Link | /bin, /sbin, <bb> | busybox |
| iproute | 41 | Alias for 'ip route'. | Link | /bin, /sbin, <bb> | busybox |
| iprule | 41 | Alias for 'ip rule'. | Link | /bin, /sbin, <bb> | busybox |
| iptunnel | 41 | Alias for 'ip tunnel'. | Link | /bin, /sbin, <bb> | busybox |
| jobs | 120 | Display status of jobs in the current session. | ash | <ash> | busybox |
| kill | 120 | Send a signal (default: TERM) to given PIDs | Link, ash | /bin, <ash> | busybox |
| killall | 120 | Send a signal (default: TERM) to given processes | Link | /usr/bin, <bb> | busybox |
| killall5 | 66 | Send a signal (default: TERM) to all processes outside current session | Link | /usr/bin, /usr/sbin, <bb> | busybox |
| klogd | 20 | Kernel logger daemon. | Link | /sbin, <bb> | busybox |
| length | 66 | Print a string's length | Intern | <bb> | busybox |
| less | 3 | View a file or list of files. | Link | /usr/bin, <bb> | busybox |
| let | 120 | Perform arithmetic on shell variables. | ash | <ash> | busybox |
| link | 74 | Create a hard link to a file. | Intern | <bb> | busybox |
| ln | 120 | Create a link link to the specified target. | Link | /bin, <bb> | busybox |
| local | 120 | Create local variables. | ash | <ash> | busybox |
| logger (bbcmd) | 20 | Write a message to the system log. If message is omitted, log stdin. | Link | /usr/bin, <bb> | busybox |
| login | 120 | Begin a new session on the system. | Link | /bin, <bb> | busybox |
| logname | 66 | Print the name of the current user. | Link | /usr/bin, <bb> | busybox |
| logread | 17 | Show messages in syslogd's circular buffer. | Link | /sbin, <bb> | busybox |
| lpr | 17 | Prints files. | Intern | <bb> | busybox |
| ls | 120 | List directory contents | Link | /bin, <bb> | busybox |
| lsattr | 11 | List file attributes on an ext2 fs. Dead link! | Link | /bin | busybox |
| lsmod | 120 | List the currently loaded kernel modules | Link | /sbin, <bb> | busybox |
| lsof (bbcmd) | 55 | List open files. | Intern | <bb> | busybox |
| man | 5 | Format and display a manual page. | Intern | <bb> | busybox |
| md5sum | 115 | Print or check MD5 checksums. | Link | /usr/bin, <bb> | busybox |
| mdev | 13 | Handle the creation of device files in /dev. | Link | /sbin, <bb> | busybox |
| mkdir | 120 | Create a directory. | Link | /bin, <bb> | busybox |
| mke2fs (bbcmd) | 11 | Create an ext filesystem. Dead link! | Link | /sbin | busybox |
| mkfifo | 97 | Create a named pipe (identical to 'mknod name p') | Link | /usr/bin, <bb> | busybox |
| mknod | 120 | Create a special file (block, character, or pipe) | Link | /bin, <bb> | busybox |
| mkswap (bbcmd) | 70 | Prepare block device to be used as swap partition | Link | /bin, /sbin, <bb> | busybox |
| modprobe | 120 | Add and remove modules from the Linux Kernel. | Link | /sbin, <bb> | busybox |
| more (bbcmd) | 120 | View a file or standard input one screenful at a time. | Link | /bin, <bb> | busybox |
| mount | 120 | Mount a filesystem. | Link | /bin, <bb> | busybox |
| mountpoint (bbcmd) | 11 | Check if the directory is a mountpoint. Dead link! | Link | /bin | busybox |
| mpstat | 64 | Report processors related statistics. | Link | /bin, <bb> | busybox |
| mt | 7 | Control magnetic tape drive operation. | Intern | <bb> | busybox |
| mu | 14 | Returns an indeterminate value. | Intern | <bb> | busybox |
| mv | 120 | Rename or move source to destination. | Link | /bin, <bb> | busybox |
| nanddump (bbcmd) | 35 | Dumps the contents of a NAND chip. | Link | /usr/sbin, <bb> | busybox |
| nbd-client | 64 | Open connection for NBD network block device. | Intern | <bb> | busybox |
| nc | 63 | Arbitrary TCP and UDP connections and listens. | Link | /usr/bin, <bb> | busybox |
| netstat | 120 | Display networking information. | Link | /bin, <bb> | busybox |
| nice | 66 | Run a program with modified scheduling priority. | Link | /bin, <bb> | busybox |
| nl | 118 | Number lines of files. | Intern | <bb> | busybox |
| nohup | 107 | Run a program immune to hangups, with output to a non-tty. | Link | /usr/bin, <bb> | busybox |
| nslookup | 84 | Query the nameserver for the IP address of the given host. | Link | /usr/bin, <bb> | busybox |
| od | 37 | Write an unambiguous representation, octal bytes by default, of a file. | Link | /usr/bin, <bb> | busybox |
| passwd (bbcmd) | 66 | Change the own or a user's password. | Link | /usr/bin, <bb> | busybox |
| pidof | 120 | List PIDs of all processes with names that match a pattern | Link | /bin, <bb> | busybox |
| ping | 120 | Send ICMP ECHO_REQUEST packets to network hosts. | Link | /bin, <bb> | busybox |
| ping6 | 67 | Send ICMP ECHO_REQUEST packets to network hosts. | Link | /bin, <bb> | busybox |
| pivot_root | 66 | Move the current root file system and make a new one. | Link | /sbin, <bb> | busybox |
| pmap | 64 | Report memory map of processes. | Intern | <bb> | busybox |
| poweroff | 118 | Power-off a machine. | Link | /sbin, <bb> | busybox |
| printenv | 77 | Print all or part of the shell environment. | Link | /bin, <bb> | busybox |
| printf | 66 | Format and print arguments according to a given format. | Link, ash | /usr/bin, <ash> | busybox |
| ps | 120 | Report process status. | Link | /bin, <bb> | busybox |
| pstree | 64 | Display a tree of processes. | Intern | <bb> | busybox |
| pwd | 120 | Print the full filename of the current working directory. | Link, ash | /bin, <ash> | busybox |
| pwdx | 64 | Report the current working directory of a process. | Intern | <bb> | busybox |
| rdate | 54 | Get and possibly set the system date and time from a remote host | Intern | <bb> | busybox |
| read | 120 | Read a line from standard input. | ash | <ash> | busybox |
| readlink | 66 | Display the value of a symlink. | Link | /usr/bin, <bb> | busybox |
| readonly | 120 | Set the readonly attribute for variables. | ash | <ash> | busybox |
| realpath | 120 | Return the absolute pathname of given argument | Link | /usr/bin, <bb> | busybox |
| reboot (bbcmd) | 120 | Reboot a machine. | Link | /sbin, <bb> | busybox |
| renice (bbcmd) | 66 | Change priority of running processes | Link | /usr/bin, <bb> | busybox |
| reset | 95 | Reset the console screen. | Link | /usr/bin, <bb> | busybox |
| return | 120 | Cause a shell function to exit with the given return value. | ash | <ash> | busybox |
| rm | 120 | Remove (unlink) files. | Link | /bin, <bb> | busybox |
| rmdir | 120 | Remove a directory, if it is empty. | Link | /bin, <bb> | busybox |
| rmmod | 120 | Unload the specified kernel modules from the kernel | Link | /sbin, <bb> | busybox |
| route | 120 | Edit kernel routing tables. | Link | /sbin, <bb> | busybox |
| run-parts | 22 | Run scripts or programs in a directory. | Link | /bin, <bb> | busybox |
| run_parts | 21 | Run scripts or programs in a directory. | Intern | <bb> | busybox |
| rx | 9 | Receive a file using the xmodem protocol. | Intern | <bb> | busybox |
| script | 110 | Make typescript of terminal session. | Intern | <bb> | busybox |
| sed | 118 | Stream editor for filtering and transforming text. | Link | /bin, <bb> | busybox |
| sendarp | 2 | Send an ARP packet. | Link | /usr/sbin, <bb> | busybox |
| seq | 66 | Print numbers from first to last, in given steps. | Link | /usr/bin, <bb> | busybox |
| set | 120 | Set or unset options and positional parameters. | ash | <ash> | busybox |
| setconsole | 110 | Redirect system console output to specified device (default: /dev/tty) | Link | /sbin, <bb> | busybox |
| setserial | 64 | Get/set Linux serial port information. | Link | /bin, <bb> | busybox |
| setsid | 120 | Run a program in a new session with no controlling terminal. | Intern | <bb> | busybox |
| sh (bbcmd) | 120 | Alias name for ash. | Link | /bin, <bb> | busybox |
| sha3sum | 40 | Print or check SHA-3 checksums. | Intern | <bb> | busybox |
| shift | 120 | Shift positional parameters. | ash | <ash> | busybox |
| sleep (bbcmd) | 120 | Pause for a time equal to the total of the args given. | Link | /bin, <bb> | busybox |
| smemcap | 64 | Capture memory usage data for later processing by smem. | Intern | <bb> | busybox |
| sort | 66 | Sort lines of text. | Link | /usr/bin, <bb> | busybox |
| source | 90 | Execute the named script in the current shell. | ash | <ash> | busybox |
| stat | 66 | Display file (default) or filesystem status. | Link | /bin, <bb> | busybox |
| strings | 22 | Display printable strings in a binary file. | Link | /usr/bin, <bb> | busybox |
| stty | 118 | Prints baud rate, line discipline and deviations of a tty. | Link | /bin, <bb> | busybox |
| su | 23 | Change user id or become root. | Intern | <bb> | busybox |
| sv | 5 | Control services monitored by runsv supervisor. | Intern | <bb> | busybox |
| swapoff (bbcmd) | 70 | Stop swapping on specified or all devices. | Link | /bin, /sbin, <bb> | busybox |
| swapon (bbcmd) | 70 | Start swapping on specified or all devices. | Link | /bin, /sbin, <bb> | busybox |
| switch_root | 77 | Free initramfs and switch to another root fs: | Link | /sbin, <bb> | busybox |
| sync | 120 | Write all buffered blocks to disk. | Link | /bin, <bb> | busybox |
| sysctl | 66 | Configure kernel parameters at runtime. | Link | /sbin, <bb> | busybox |
| syslogd | 20 | System logging daemon. | Link | /sbin, <bb> | busybox |
| tail | 110 | Print last 10 lines of each file to standard output. | Link | /usr/bin, <bb> | busybox |
| tar | 120 | Create, extract, or list files from a tar file | Link | /bin, <bb> | busybox |
| taskset | 11 | Set or get CPU affinity. | Link | /usr/bin, <bb> | busybox |
| tc (bbcmd) | 43 | Show / manipulate traffic control settings. | Intern | <bb> | busybox |
| tee | 118 | Copy standard input to each file, and also to standard output. | Link | /usr/bin, <bb> | busybox |
| telnetd (bbcmd) | 105 | Handle incoming telnet connections. | Link | /usr/sbin, <bb> | busybox |
| test | 120 | Check file types, compare values etc. | Link, ash | /usr/bin, <ash> | busybox |
| tftp | 120 | Transfer a file from/to tftp server. | Link | /usr/bin, <bb> | busybox |
| then | 120 | Marks the beginning of an if clause body. | ash | <ash> | busybox |
| time | 118 | Runs a progran. When it finishes, its resource usage is displayed. | Link | /usr/bin, <bb> | busybox |
| timeout | 19 | Runs a program, sends a signal to it if it is not gone in given seconds. | Intern | <bb> | busybox |
| times | 120 | Print process times. | ash | <ash> | busybox |
| top | 66 | Provide a view of process activity in real time. | Link | /usr/bin, <bb> | busybox |
| touch | 120 | Update the last-modified date on the given files. | Link | /bin, <bb> | busybox |
| tr | 120 | Translate, squeeze or delete characters from stdin to dtdout. | Link | /usr/bin, <bb> | busybox |
| traceroute | 115 | Trace the route to HOST. | Link | /usr/bin, <bb> | busybox |
| traceroute6 | 35 | Trace the route to HOST using IPv6. | Link | /usr/bin, <bb> | busybox |
| trap | 120 | Trap signals. | ash | <ash> | busybox |
| true | 120 | Return an exit code of TRUE (0). | Link, ash | /bin, <ash> | busybox |
| ts | 36 | Adds a timestamp to the beginning of each line of input. | Intern | <bb> | busybox |
| tty (bbcmd) | 110 | Print file name of standard input's terminal. | Link | /usr/bin, <bb> | busybox |
| tune2fs | 11 | Adjust tunable filesystem parameters on ext filesystems.. Dead link! | Link | /sbin | busybox |
| type | 120 | Print a description of command type. | ash | <ash> | busybox |
| ubiattach (bbcmd) | 40 | Attach MTD devices to UBI. | Intern | <bb> | busybox |
| ubidetach (bbcmd) | 40 | Delete UBI devices (detach MTD devices from UBI). | Intern | <bb> | busybox |
| ubimkvol (bbcmd) | 64 | Create UBI volumes. | Intern | <bb> | busybox |
| ubirename (bbcmd) | 2 | Rename UBI volumes. | Intern | <bb> | busybox |
| ubirmvol (bbcmd) | 64 | Remove UBI volumes. | Intern | <bb> | busybox |
| ubirsvol (bbcmd) | 64 | Resize UBI volumes. | Intern | <bb> | busybox |
| ubiupdatevol (bbcmd) | 64 | Update UBI volumes. | Intern | <bb> | busybox |
| ulimit | 120 | Set or report file size limit. | ash | <ash> | busybox |
| umask | 120 | Get or set the file mode creation mask. | ash | <ash> | busybox |
| umount | 120 | Unmount file systems. | Link | /bin, <bb> | busybox |
| unalias | 120 | Remove shell alias definitions. | ash | <ash> | busybox |
| uname | 120 | Print system information. | Link | /bin, <bb> | busybox |
| uniq | 110 | Discard duplicate lines. | Link | /usr/bin, <bb> | busybox |
| unlink | 89 | Remove the specified file. | Intern | <bb> | busybox |
| unset | 120 | Unset values and attributes of variables and functions. | ash | <ash> | busybox |
| until | 120 | Execute commands in the loop as long as the test condition is false. | ash | <ash> | busybox |
| unxz | 64 | Decompress .xz and .lzma files. | Intern | <bb> | busybox |
| unzip | 66 | Extract files from zip archives | Link | /usr/bin, <bb> | busybox |
| uptime | 118 | Display the time since the last boot. | Link | /usr/bin, <bb> | busybox |
| usleep | 94 | Pause for given microseconds. | Intern | <bb> | busybox |
| vconfig | 78 | Create and remove virtual ethernet devices. | Link | /sbin, <bb> | busybox |
| vi | 118 | Edit a file. | Link | /bin, <bb> | busybox |
| w | 81 | Show who is logged on and what they are doing. | Intern | <bb> | busybox |
| wait | 120 | Await process completion. | ash | <ash> | busybox |
| wc | 68 | Print line, word, and byte counts for each file, and a total line. | Link | /usr/bin, <bb> | busybox |
| wget | 120 | Retrieve files via HTTP or FTP. | Link | /usr/bin, <bb> | busybox |
| which | 17 | Locate a command. | Link | /usr/bin, <bb> | busybox |
| while | 120 | Execute commands in the loop as long as the test condition is true. | ash | <ash> | busybox |
| whois | 64 | Client for the whois directory service. | Intern | <bb> | busybox |
| xargs | 86 | Run a program on every item given by standard input | Link | /usr/bin, <bb> | busybox |
| xxd | 6 | Make a hexdump or do the reverse. | Link | /usr/bin, <bb> | busybox |
| xz | 75 | Compress or decompress .xz and .lzma files. | Intern | <bb> | busybox |
| xzcat | 64 | Decompress .xz and .lzma files to stdout. | Intern | <bb> | busybox |
| yes | 79 | Repeatedly output a line with given strinf or 'y'. | Intern | <bb> | busybox |
| zcat | 66 | Uncompress a zip file to stdout. | Link | /bin, <bb> | busybox |
| 265 BusyBox commands | |||||
