UNIX Common Commands

[Kalyan]

UNIX Common Commands

alias; for displaying or defining aliases for long command strings.

awk; for searching a file for a particular pattern and then executing a specific action on those lines which include the particular pattern.

bg; for moving a process that stopped, to the background and then restarting it.

cal; shows the calendar.

cat; for displaying/concatenating files.

cd; to change the current directory.

chgrp; to change group ownership of a file.

chmod; to change access permissions of a file.

chown; to change ownership of a file

chsh; to change the default shell of a password file.

clear; to clear the current display.

cmp; to compare two files and list the differences.

cp; to copy a file.

date; to show the date and time.

df; to show the free disk space in the file system.

diff; to list the differences between two files.

du; to view file system usage.

fg; for moving a process that stopped to the background and then restarting it.

find; to find a file with particular characteristics.

ftp; File Transfer Protocol (FTP) client.

Grep; to search a file for a specific text pattern.

head; to display the first 10 lines of a file.

help; to display help.

hostname; shows the name of the host system.

kill; to end a currently running process.

Ln; to link files.

lpq; shows the print job to the spooler.

lpr; to send a print job to the spooler.

ls; to display files within a directory and file statistics.

mail; to send an e-mail.

man; to navigate to the online manual.

mkdir; to create a directory.

mv; to move/rename a file.

passwd; change the password.

ps; show the status of the process.

rm; remove/delete a file.

rmdir; remove/delete a directory.

sleep; to pause a process.

sort; to sort files.

split; to split the file into a number of files.

uudecode; decode a uuencoded file.

uuencode; encodes a binary file.

whoami; list the name of currently logged on user.

whois; locate a remote user/site.

write; send a user a message.