Lines Matching refs:usage
55 | ascii | Displays the ASCII table.<br>usage: ascii |
56 | factor | Factors an integer.<br>usage: factor NUMBER... |
57 | mcookie | Generates a 128-bit strong random number.<br>usage: mcookie [-vV] |
58 | mkpasswd | Encrypts a password.<br>usage: mkpasswd [-P FD] [-m TYPE] [-S SALT] [PASSWORD] [SALT] |
59 | uuidgen | Creates and prints a new RFC4122 random UUID.<br>usage: uuidgen |
65 | chvt | Switches to virtual device N.<br>usage: chvt N |
66 | chroot | Runs a command in the specified root directory.<br>usage: chroot NEWROOT [COMMAND [ARG..…
67 | clear | Clears the terminal.<br>usage: clear |
68 | nohup | Runs a command independent of the terminal.<br>usage: nohup COMMAND [ARG...] |
69 | tty | Displays the name of the device connected to the standard input device.<br>usage: tty [-…
70 | reset | Resets the terminal.<br>usage: reset |
71 | microcom | Runs a simple serial console.<br>usage: microcom [-s SPEED] [-X] DEVICE |
77 | false | Returns a non-zero value.<br>usage: false |
79 …rue** or **false**. If no parameter is carried, **false** is returned.<br>usage: test [-bcdefghLPr…
80 | true | Returns zero.<br>usage: true |
81 …atedly until it is killed. If no parameter is carried, **y** is returned.<br>usage: yes [args...] |
87 | acpi | Obtains the power supply and temperature status.<br>usage: acpi [-abctV] |
88 | arch | Prints the system name.<br>usage: arch |
89 | dmesg | Displays or controls the kernel ring buffer.<br>usage: dmesg [-Cc] [-r \| -t \| -T] […
90 …plays the system name, which is the same as the value of **hostname -d**.<br>usage: dnsdomainname |
91 …stem configuration values. Some values require the **path** parameter.<br>usage: getconf -a [PATH]…
92 | env | Sets the environment for command execution or lists environment variables.<br>usage: …
93 | hostname | Obtains the current host name.<br>usage: hostname [-bdsf] [-F FILENAME] [newname] |
94 | insmod | Loads a kernel module.<br>usage: insmod MODULE [MODULE_OPTIONS] |
95 | logger | Records system logs.<br>usage: logger [-s] [-t TAG] [-p [FACILITY.]PRIORITY] [message…
96 | lsmod | Displays the loaded modules, their sizes, and their dependencies.<br>usage: lsmod |
97 | mix | Displays the OSS audio channel or sets the volume.<br>usage: mix [-d DEV] [-c CHANNEL…
98 | modinfo | Displays the kernel module information.<br>usage: modinfo [-0] [-b basedir] [-k kerne…
99 | nproc | Prints the number of processors.<br>usage: nproc [--all] |
100 | oneit | Runs a simple initialization program.<br>usage: oneit [-p] [-c /dev/tty0] command [..…
101 | partprobe | Notifies the kernel that the partitioned table has changed.<br>usage: partprobe DEVIC…
102 | pivot_root | Modifies the root directory.<br>usage: pivot_root OLD NEW |
103 | printenv | Prints environment variables.<br>usage: printenv [-0] [env\_var...] |
104 | reboot/halt/poweroff | Reboots, halts, or powers off a system.<br>usage: reboot/halt/poweroff [-f…
105 | rfkill | Enables or disables a wireless device.<br>usage: rfkill COMMAND [DEVICE] |
106 | rmmod | Uninstalls a kernel module.<br>usage: rmmod [-wf] [MODULE] |
107 | sendevent | Sends a Linux input event.<br>usage: sendevent DEVICE TYPE CODE VALUE |
108 | swapoff | Deactivates a swap space.<br>usage: swapoff swapregion |
109 | swapon | Activates a swap partition in a specified device or file.<br>usage: swapon [-d] [-p p…
110 | switch_root | Switches to the root directory and runs a new init program.<br>usage: switch_root […
111 | uname | Prints system information.<br>usage: uname [-asnrvm] |
112 | vmstat | Prints virtual memory information.<br>usage: vmstat [-n] [DELAY [COUNT]] |
118 | cal | Prints a calendar.<br>usage: cal [[month] year] |
119 | date | Sets or obtains the current date and time.<br>usage: date [-u] [-r FILE] [-d DATE] [+DI…
120 | hwclock | Obtains or sets the hardware clock.<br>usage: hwclock [-rswtluf] |
121 … be "m" (minute), "h" (hour), "d" (day), or "s" (second, default value).<br>usage: sleep DURATION |
122 …r-mode, and the system time is the actual CPU time sped in the kernel.<br>usage: time [-pv] COMMAN…
123 …er of users, and the average system load in the past 1, 5, and 15 minutes.<br>usage: uptime [-ps] |
124 | usleep | Waits for the configured time before exiting, in microseconds.<br>usage: usleep MICROSE…
130 | groups | Prints the group to which the user belongs.<br>usage: groups [user] |
131 | id | Prints the user and group ID.<br>usage: id [-nGgru] [USER...] |
132 | login | Logs in as a user.<br>usage: login [-p] [-h host] [-f USERNAME] [USERNAME] |
133 | logname/whoami | Prints the current user name.<br>usage: logname/whoami |
134 | passwd | Updates the authentication token of a user.<br>usage: passwd [-a ALGO] [-dlu] [USER] |
135 | who | Prints information about logged in users.<br>usage: who |
136 | w | Displays the user login information and login time.<br>usage: w |
142 | chrt | Obtains or sets the scheduling policy and priority of a process.<br>usage: chrt [-Rmo…
143 | iorenice | Displays or modifies the I/O priority of a process.<br>usage: iorenice PID [CLASS] [P…
144 | iotop | Sorts processes based on the I/O priority.<br>usage: iotop [-AaKObq] [-n NUMBER] [-d …
145 | ionice | Displays or modifies the I/O scheduling priority of a process.<br>usage: ionice [-t] …
146 | kill | Sends a signal to a process.<br>usage: kill [-l [SIGNAL] \| -s SIGNAL \| -SIGNAL] pid…
147 … signal (**SIGTERM** by default) to all processes with the given name.<br>usage: killall [-l] [-iq…
148 | killall5 | Sends signals to all processes except the current session.<br>usage: killall5 [-l [SI…
149 | pidof | Prints the PIDs of all processes with the given name.<br>usage: pidof [-s] [-o omitpid[…
150 | pkill | Kills a process by process name.<br>usage: pkill [-fnovx] [-SIGNAL \| -l SIGNAL] [PATTE…
151 | pmap | Obtains the memory mapping of a process.<br>usage: pmap [-xq] [pids...] |
152 | ps | Displays information of a process.<br>usage: ps [-AadefLlnwZ] [-gG GROUP,] [-k FIELD,] …
153 | pwdx | Prints the working directory of a process.<br>usage: pwdx PID... |
154 | renice | Adjusts the priority of processes, process groups, and user-level processes.<br>usage: …
155 | setsid | Runs a command in a new session.<br>usage: setsid [-t] command [args...] |
156 … processor, or modifies the processor affinity of an existing process.<br>usage: taskset [-ap] [ma…
157 …e "m" (minute), "h" (hour), "d" (day), or "s" (second, default value).<br>usage: timeout [-k DURAT…
158 | top | Displays process information in real time.<br>usage: top [-Hbq] [-k FIELD,] [-o FIELD,]…
159 | nice | Runs a command with a specified priority.<br>usage: nice [-n PRIORITY] COMMAND [ARG...]…
160 | nsenter | Runs a command in a specific namespace.<br>usage: nsenter [-t pid] [-F] [-i] [-m] [-n] …
161 | ulimit/prlimit | Displays or sets the resource limit of a process.<br>usage: ulimit/prlimit [-P P…
162 …for a process. Some attributes are not shared with the parent process.<br>usage: unshare [-imnpuUr…
163 …e execution result. You can press **q** to exit the command execution.<br>usage: watch [-teb] [-n …
164 …one or more times, carrying parameters from the standard input device.<br>usage: xargs [-0prt] [-s…
170 | blkid | Prints information of the file system, such as type, tag, and UUID.<br>usage: blkid…
171 | blockdev | Invokes ioctl for the block device in each command.<br>usage: blockdev --OPTION... …
172 | devmem | Reads and writes the physical address using **/dev/mem**.<br>usage: devmem ADDR [WI…
173 …in. If no parameter is carried, all loaded file systems are displayed.<br>usage: df [-HPkhi] [-t t…
174 | du | Displays the disk usage with files and directories.<br>usage: du [-d N] [-askxHLlmc…
175 | eject | Ejects a device, which is **/dev/cdrom** by default.<br>usage: eject [-stT] [DEVICE…
176 … the total, available, and used amount of physical memory and swap space.<br>usage: free [-bkmgt] |
177 | freeramdisk | Releases all memory of a specified RAM disk.<br>usage: freeramdisk [RAM device] |
178 | fsfreeze | Freezes or unfreezes a file system.<br>usage: fsfreeze {-f \| -u} MOUNTPOINT |
179 | fstype | Prints the type of a file system.<br>usage: fstype DEV... |
180 | fsync | Synchronizes the file status with the storage device.<br>usage: fsync [-d] [FILE...…
181 | i2cdetect | Detects an I2C device.<br>usage:<br> i2cdetect [-ary] BUS [FIRST LAST] <br>&em…
182 | i2cdump | Dumps all I2C registers.<br>usage: i2cdump [-fy] BUS CHIP |
183 | i2cget | Reads an I2C register.<br>usage: i2cget [-fy] BUS CHIP ADDR |
184 | i2cset | Writes data to an I2C register.<br>usage: i2cset [-fy] BUS CHIP ADDR VALUE... MODE |
185 | losetup | Sets a loop device.<br>usage: losetup [-cdrs] [-o OFFSET] [-S SIZE] {-d DEVICE... \…
186 | lspci | Displays PCI device information.<br>usage: lspci [-ekmn] [-i FILE ] |
187 | lsusb | Displays USB device information.<br>usage: lsusb |
188 …pecial files, including block device files and character device files.<br>usage: makedevs [-d devi…
189 …ectory. If no parameter is carried, the existing mounts are displayed.<br>usage: mount [-afFrsvw] …
190 | mountpoint | Checks whether a directory or device is a mount point.<br>usage:<br> mountpoin…
191 | sync | Writes the cached data to a disk.<br>usage: sync |
192 | sysctl | Reads and writes the system control data in **/proc/sys.**<br>usage: sysctl [-aAeNn…
193 | tunctl | Creates or deletes a TUN or TAP device.<br>usage: tunctl [-dtT] [-u USER] NAME |
194 | vconfig | Creates or deletes a virtual Ethernet device.<br>usage: vconfig COMMAND [OPTIONS] |
195 | umount | Unmounts a file system.<br>usage: umount [-a [-t TYPE[,TYPE...]]] [-vrfD] [DIR...] |
201 … the **-g** option. The **ftpput** command contains the **-s** option.<br>usage: ftpget/ftpput [-c…
202 | ifconfig | Displays or configures a network interface.<br>usage: ifconfig [-aS] [INTERFACE […
203 | nbd-client | Creates an NBD client.<br>usage: nbd-client [-ns] HOST PORT DEVICE |
204 | netstat | Displays network information.<br>usage: netstat [-pWrxwutneal] |
205 …etwork connectivity. The **ping6** command contains the **-6** option.<br>usage: ping/ping6 [OPTIO…
206 | sntp | Runs an SNTP client.<br>usage: sntp [-saSdDqm] [-r SHIFT] [-m ADDRESS] [-p PORT] [SERVE…
207 | telnet | Connects to a Telnet server.<br>usage: telnet HOST [PORT] |
208 …usage: traceroute [-46FUIldnvr] [-f 1ST_TTL] [-m MAXTTL] [-p PORT] [-q PROBES] [-s SRC_IP] [-t TOS…
209 | wget | Downloads resources from the network.<br>usage: wget -O filename URL |
215 | awk | Filters and analyzes document content.<br>usage: awk [-F sepstring] [-v assignment]..…
216 | base64 | Uses the Base64 algorithm for encryption and decryption.<br>usage: base64 [-di] [-w C…
217 | basename | Returns the non-directory portion of a path name after removing its suffix.<br>usage:…
218 | bunzip2 | Decompresses a .bz file.<br>usage: bunzip2 [-cftkv] [FILE...] |
219 | bzcat | Decompresses a listed file to the standard output.<br>usage: bzcat [FILE...] |
220 …from the standard input device. "-" indicates a standard input device.<br>usage: cat [-etuv] [FILE…
221 | chattr | Modifies the file attributes of a Linux Ext2 file system.<br>usage: chattr [-R] [-+=A…
222 | chcon | Modifies the SELinux security context of a file.<br>usage: chcon [-hRv] CONTEXT FILE.…
223 | chgrp/chown | Modifies the group of a file.<br>usage: chgrp/chown [-RHLP] [-fvh] group file... |
224 | chmod | Changes the access mode of a file (recursively with **-R**).<br>usage: chmod [-R] MOD…
225 …from the standard input device. "-" indicates a standard input device.<br>usage: cksum [-IPLN] [fi…
226 …an specify whether to skip a certain number of bytes at the beginning.<br>usage: cmp [-l] [-s] FIL…
227 …FILE2, and lines in both files. "-" indicates a standard input device.<br>usage: comm [-123] FILE1…
228 …and displays a simple progress indicator to the standard error output **stderr**.<br>usage: count |
229 …**DEST**. If there are multiple sources, **DEST** must be a directory.<br>usage: cp [--preserve=mo…
230 | cpio | Reads and writes files from the **cpio** archive in the **newc** format.<br>usage: cp…
231 | crc32 | Outputs the CRC32 checksum of each file.<br>usage: crc32 [file...] |
232 …te of a line, and -X indicates from the 1st byte to X byte of a line).<br>usage: cut [-Ds] [-bcfF …
233 …o create disk mirroring, back up data, and convert character encoding.<br>usage:<br>  dd [if=…
234 | diff | Compares files or folders and outputs their differences.<br>usage: diff [-abBdiNqrTst…
235 | dirname | Displays the directory portion of a path.<br>usage: dirname PATH... |
236 …from the standard input device. "-" indicates a standard input device.<br>usage: dos2unix [FILE...…
237 … device. Each parameter is separated by a space followed by a newline.<br>usage: echo [-neE] [args…
238 …option. The **-E** and **-F** options cannot be used at the same time.<br>usage: grep/egrep/fgrep …
239 | gzip | Compresses a file.<br>usage: gzip [-19cdfk] [FILE...] |
240 | expand | Expands a tab to a space based on the input parameter.<br>usage: expand [-t TABLIST] …
241 | fallocate | Reserves space for a file in a file system.<br>usage: fallocate [-l size] [-o offset]…
242 | file | Checks a file and describes its content type.<br>usage: file [-bhLs] [file...] |
243 | find | Finds a file in the directory.<br>usage: find [-HL] [DIR...] [<options>] |
244 | flock | Manages an advisory lock.<br>usage: flock [-sxun] fd |
245 …isting indentation level, and writes it to the standard output device.<br>usage: fmt [-w WIDTH] [F…
246 …eted and replaced with a new file without the file name extension .gz.<br>usage: gunzip [-cfk] [FI…
247 …from the standard input device. "-" indicates a standard input device.<br>usage: head [-n number] …
248 | hexedit | Edits a hexadecimal file. All modifications are written to disk immediately.<br>usage…
249 | iconv | Converts the encoding format of a file.<br>usage: iconv [-f FROM] [-t TO] [FILE...] |
250 | inotifyd | Runs a specified program when a file system event occurs.<br>usage: inotifyd PROG FIL…
251 | install | Copies a file and sets its attributes.<br>usage: install [-dDpsv] [-o USER] [-g GROUP…
252 | link | Creates a hard link for a file.<br>usage: link FILE NEWLINK |
253 | ln | Creates a soft or hard link between **FROM** and **TO**.<br>usage: ln [-sfnv] [-t DIR…
254 | ls | Lists the files or folders in the current directory.<br>usage: ls [-ACFHLRSZacdfhiklm…
255 …he Linux file system. The flag letters are defined in the chattr help.<br>usage: lsattr [-Radlv] […
256 …the active processes, or lists the processes that use the listed file.<br>usage: lsof [-lt] [-p PI…
257 …evice. Each input file outputs a line of hash followed by a file name.<br>usage: md5sum [-bcs] [FI…
258 | mkdir | Creates one or more directories.<br>usage: mkdir [-vp] [-m mode] [dirname...] |
259 | mkfifo | Creates a FIFO file (named pipe).<br>usage: mkfifo [NAME...] |
260 | mkswap | Creates a swap space in Linux.<br>usage: mkswap [-L LABEL] DEVICE |
261 | mktemp | Safely creates a file **DIR/TEMPLATE** and prints its name.<br>usage: mktemp [-dqu] […
262 …ice, **c** or **u** is a character device, and **p** is a named pipe).<br>usage: mknod [-m MODE] N…
263 | more | Views a file one page at a time.<br>usage: more [FILE...] |
264 | mv | Moves or renames a file.<br>usage: mv [-fivn] SOURCE... DEST |
265 | nl | Adds a line number to an input file.<br>usage: nl [-E] [-l #] [-b MODE] [-n STYLE] [-…
266 | od | Dumps data in octal/hexadecimal format.<br>usage: od [-bcdosxv] [-j #] [-N #] [-w #] …
267 | paste | Merges corresponding lines from each input file.<br>usage: paste [-s] [-d DELIMITERS]…
268 | patch | Applies a diff file to one or more files.<br>usage: patch [-d DIR] [-i file] [-p dept…
269 …TTERN** is an extended regular expression used to check command names.<br>usage: pgrep [-clfnovx] …
270 | printf | Uses printf in C to format and print parameters based on the **FORMAT**.<br>usage: pr…
271 | pwd | Prints the working (current) directory.<br>usage: pwd [-L \| -P] |
272 | readahead | Preloads a file to the disk cache.<br>usage: readahead FILE... |
273 …tions are carried. If it is not a symbolic link, an error is returned.<br>usage: readlink FILE... |
274 | realpath | Displays the standard absolute path name.<br>usage: realpath FILE... |
275 | rev | Outputs each line in reverse order.<br>usage: rev [FILE...] |
276 | rm | Removes a file.<br>usage: rm [-fiRrv] FILE... |
277 | rmdir | Removes one or more directories.<br>usage: rmdir [-p] [dirname...] |
278 | sed | Stream editor that applies the edit script to the input line.<br>usage: sed [-inrzE] …
279 …1. The parameter can be a negative number or a floating point number.<br>usage: seq [-w \| -f fmt…
280 | setfattr | Writes POSIX extended attributes.<br>usage: setfattr [-h] [-x \| -n NAME] [-v VALUE] …
281 | sha1sum/sha256sum | Calculates the SHA hash value.<br>usage: sha?sum [-bcs] [FILE]... |
282 | shred | Deletes a file securely (overwrites the file content with random data).<br>usage: shr…
283 …e input file (or standard input device) to the standard output device.<br>usage: sort [-Mbcdfginrs…
284 …with alphabetically increasing suffix (aa, ab, ac, ... az, ba, bb...).<br>usage: split [-a SUFFIX\…
285 | stat | Displays the status of a file or file system.<br>usage: stat [-tfL] [-c FORMAT] FILE.…
286 | strings | Displays printable strings in a binary file.<br>usage: strings [-fo] [-t oxd] [-n LEN…
287 | tac | Outputs lines in reverse order.<br>usage: tac [FILE...] |
288 … to the standard output device. "-" indicates a standard input device.<br>usage: tail [-n\|c NUMBE…
289 | tar | Creates, extracts, or lists files in a .tar file.<br>usage: tar [-cxt] [-fvohmjkOS] […
290 …to the standard output device. "-" indicates a standard output device.<br>usage: tee [-ai] [file..…
291 | touch | Updates the access and modification time of each file to the current time.<br>usage: …
292 | truncate | Sets the length of the file, sparsely expanding if necessary.<br>usage: truncate [-c]…
293 | uniq | Reports or filters output duplicate lines in a file.<br>usage: uniq [-cduiz] [-w maxc…
294 …from the standard input device. "-" indicates a standard input device.<br>usage: unix2dos [FILE...…
295 | unlink | Removes a file.<br>usage: unlink FILE |
296 | uudecode | Decodes a file from the standard input device (or INFILE).<br>usage: uudecode [-o OUT…
297 … to a standard output device. The output contains **encode-filename**.<br>usage: uuencode [-m] [fi…
298 | wc | Counts the number of lines, words, and characters in the input.<br>usage: wc -lwcm [F…
299 | which | Searches **\$PATH** for executable files that match the specified file name.<br>usage…
300 …o file is specified, the command reads from the standard input device.<br>usage: xxd [-c n] [-g n]…
301 … the file to the standard output device. It is similar to **gzip -dc**.<br> usage: zcat [FILE...] |