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 |