recursively Search keywords
find . -type f -print | xargs grep chaine_a_chercher
shutdown -i 6 -g 2 -y "bye"
List the files in current directory sorted by size
ls -l | grep ^- | sort -nr
Delete blank lines in a file ?
cat sample.txt | grep -v '^$' > new_sample.txt
Display the Disk Usage of file sizes under each directory in currentDirectory ?
du -k * | sort –nr or du –k . | sort -nr
Set the Display automatically for the current new user ?
export DISPLAY=`eval 'who am i | cut -d"(" -f2 | cut -d")" -f1?`
List some Hot Keys for bash shell ?
Ctrl+l – Clears the Screen. Ctrl+r – Does a search in previously given commands in shell. Ctrl+u - Clears the typing before the hotkey. Ctrl+a – Places cursor at the beginning of the command at shell. Ctrl+e – Places cursor at the end of the command at shell. Ctrl+d – Kills the shell. Ctrl+z – Places the currently running process into background.
How do you find out drive statistics ?
Display top ten largest files/directories ?
du -sk * | sort -nr | head
How much space is used for users in kilobytes ?
Display Ethernet Address arp table ?
Display the no.of active established connections to localhost ?
netstat -a | grep EST
Display the state of interfaces used for TCP/IP traffice ?
Show the working directory of a process ?
Display the processes current open files ?
Alternative for top command ?