| quota |
Display disk usage and limits |
| quotacheck |
Scan a file system for disk usage |
| quotactl |
Set disk quotas |
| ram |
ram disk device |
| rcp |
Copy files between two machines |
| read |
Read a line from standard input |
| readarray |
Read from stdin into an array variable |
| readonly |
Mark variables/functions as readonly |
| reboot |
Reboot the system |
| remsync |
Synchronize remote files via email |
| rename |
Rename files |
| renice |
Alter priority of running processes |
| return |
Exit a shell function |
| rev |
Reverse lines of a file |
| rm |
Remove files |
| rmdir |
Remove folders |
| rsync |
Remote file copy (Synchronize file trees) |
| scp |
Secure copy (remote file copy) |
| screen |
Multiplex terminal, run remote shells via ssh |
| sdiff |
Merge two files interactively |
| sed |
Stream Editor |
| select |
Accept keyboard input |
| seq |
Print numeric sequences |
| set |
Manipulate shell variables and functions |
| sftp |
Secure File Transfer Program |
| shift |
Shift positional parameters |
| shopt |
Shell Options |
| shutdown |
Shutdown or restart linux |
| sleep |
Delay for a specified time |
| slocate |
Find files |
| sort |
Sort text files |
| source |
Run commands from a file |
| split |
Split a file into fixed-size pieces |
| ssh |
Secure Shell client (remote login program) |
| strace |
Trace system calls and signals |
| su |
Substitute user identity |
| sudo |
Execute a command as another user |
| sum |
Print a checksum for a file |
| suspend |
Suspend execution of this shell |
| symlink |
Make a new name for a file |
| sync |
Synchronize data on disk with memory |
| tail |
Output the last part of file |
| tar |
Tape Archiver |
| tee |
Redirect output to multiple files |
| test |
Evaluate a conditional expression |
| time |
Measure Program running time |
| times |
User and system times |
| top |
List processes running on the system |
| touch |
Change file timestamps |
| tr |
Translate, squeeze, and/or delete characters |
