Other Utilities Linux Command

• clear Clear the screen

• 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

Other Utilities Linux Command