Linux Commands
Linux Shell or “Terminal”
A shell is a program that receives commands from the user and gives it to the OS to process, and it shows the output. Linux's shell is its main part. Its distros come in GUI (graphical user interface), but basically, Linux has a CLI (command line interface).
Linux Basic Commands
pwd command
‘pwd’ command prints the absolute path to current working directory.
$ pwd /home/infomax
cal command
Displays the calendar of the current month.
$ cal
echo command
This command will echo whatever we provide it.
$ echo "infomaxacademy.com"
infomaxacademy.comdate command
Displays current time and date.
$ date Fri Jul 6 01:07:09 IST 2012
clear command
This command clears the screen.
$ clear
Linux Filesystem commands
Changing Directories (CD) Command
$ cd [path-to-directory] $ cd /usr/share/
Listing File And Directories Command
ls Command
$ ls [files-or-directories]
List files and/or directories. If no argument is given, the contents of current directory are shown.
$ ls
Creating/Deleting files and directories
mkdir command
To create a directory, the ‘mkdir’ command is used.
$ mkdir olevel
rm Command
To remove a directory, the 'rm' command is used
rmdir directoryname