Don’t forget the command: man commandname for program/command specific information.
Using Command Line
Get the Drive Usage / Free space
Use command: df -h
Get the Folder size
Use Command: du –h
Schedule a command
This will edit current users crontab config: crontab –e
This will list current users crontab config: crontab –l
Tasks are entered with the following syntax:
* * * * * (command; another command ;)
Where the *’s represent: Min, hrs, days of month, month of yr ,day of week
Printing a PDF
The following command line command prints a PDF file and moves it to a folder called printed.
Prerequisites:
- GhostScript is installed
- Printer is installed (and is a hp laserjet)
- There is a ‘printed’ folder in the same folder as the PDF file
|
Gs –sDEVICE=ljet4 sOutputFile=|lpr *.pdf; mv *.pdf printed/; echo ALL DONE !!!;
|
Using VI Editor (VIM)
Basic Operation
Enter edit mode with ‘Ins’
Return to command mode with ‘Esc’.
Quit without saving with ‘:q!’ in command mode.
Quit with saving with ‘ZZ’ in command mode.
Save with ‘:w’ in command mode.
Save As with ‘:w newfilename’ in command mode.
Turn on syntax highlighting with ‘:syntax on’.
Modify Configuration Defaults
Open /etc/vim/vimrc or .vimrc in your home directory
To turn on Syntax Highlighting by default, change the line “ syntax on to syntax on.