Here is some basic Linux command which can help you use more easily day to day Linux system.
Command
|
Description
|
ln
|
Create shortcut
Example:
# ln –s subhash.doc /root/serverkaka/
|
less
|
Open or view a plain text file in a viewer. Hit Q for quit
Example:
# less subhash.txt
|
df
|
Show amount of free disk space on all attached filesystems.
Example:
# df –h
|
free
|
Show amount of free memory.
Example:
# free –mt
‐t: Show totals column
‐g: Show output in gigabytes
‐m: Show output in megabytes
|
grep
|
Search through a specified file for a word or phrase. First, specify the word, and then the file to be searched through.
Example:
# grep –i serverkaka subhash.txt
‐i: Ignore upper/lowercase
|
man
|
View the manual page for a specified command.
Example:
# man ls
|
vim
|
Simple text editor. Hit Esc +:wq for saving.
Example:
# vim /root/Subhash.txt
|
locate
|
Find specified file
Example:
# locate -i subhash.doc
‐i: Ignore upper/lowercase when searching
|
ls
|
List files and folders.
Example:
# ls ‐l
‐l: show permissions, ownership etc...
‐a: Show including hidden files
‐h: Show in KB, MB etc...
|
cd
|
Change Directory.
Example:
# cd /root/
|
cp
|
Copy file or folder
Example:
# cp -r /root/subhash /opt/website/
-r: copy include sub file/folder
|
pwd
|
Show present work directory
Example:
# pwd
|
mv
|
Move file or folder. Also use for rename files/folders if a new destination is not specified.
Example (moving):
# mv /root/subhash.doc /opt/website/
Example (renaming):
# mv subhash.doc serverkaka.doc
|
rm
|
Delete file/folder
Example:
# rm -rf /root/subhash.doc
|
date
|
Show system current time and date
Example:
# date
|
su
|
Switch another user
Example:
# su subhash
|
