Other Utilities Commands in Linux
- clear Clear the scree
- echo Display text on the screen. Mostly useful when writing shell scripts. For
example: echo “Hello World”
- more Display a file, or program output one page at a time.
Examples: more mp3files.txt
ls -la | more
- less An improved replacement for the “more” command. Allows you to scroll backwards as well as forwards.
- grep Search for a pattern in a file or program output. For example, to find out
which TCP network port is used by the “nfs” service, you can do this:
grep .nfs. /etc/services
This looks for any line that contains the string “nfs” in the file “/etc/services” and displays only those lines.
- lpr Print a file or program output.
Examples: lpr mp3files.txt - Print the mp3files.txt file
ls -la | lpr - Print the output of the “ls -la” command.
- sort Sort a file or program output. Example: sort mp3files.txt
- su “Switch User”. Allows you to switch to another user's account temporarily.
The default account to switch to is the root/superuser account. Examples:
su - Switch the root account
su - - Switch to root, and log in with root's environment
su AMDI - Switch to AMDI account