Friday, February 14, 2014

Linux Command

This article provides practical examples for 50 most frequently used commands in Linux / UNIX.

This is not a comprehensive list by any means, but this should give you a jumpstart on some of the common Linux commands. Bookmark this article for your future reference.

Did I miss any frequently used Linux commands? Leave a comment and let me know.

1-mkdir - make directories
cd - change directories

Use cd to change directories. Type cd followed by the name of a directory to access that directory.Keep in mind that you are always in a directory and can navigate to directories hierarchically above or below.

2mv- change the name of a directory

Type mv followed by the current name of a directory and the new name of the directory.

 Ex: mv testdir newnamedir

3pwd - print working directory

will show you the full path to the directory you are currently in. This is very handy to use, especially when performing some of the other commands on this page

 4rmdir - Remove an existing directory

 rm -r

Removes directories and files within the directories recursively.

5chown - change file owner and group

6-ls - Short listing of directory contents

-a        list hidden files

-d        list the name of the current directory

-F        show directories with a trailing '/'

            executable files with a trailing '*'

-g        show group ownership of file in long listing

-i        print the inode number of each file

-l        long listing giving details about files  and directories

-R        list all subdirectories encountered

-t        sort by time modified instead of name

7-cp - Copy files

8-top - Prints a display of system processes that's continually updated until the user presses the q key.

9-uptime - Prints the system uptime.

10-w - Prints the current system users.

11-reboot - Reboots the system (requires root privileges).

12-head files - Prints the first several lines of each specified file.
13-cal month year - Prints a calendar for the specified month of the specified year.

14-cat files - Prints the contents of the specified files.

15-clear - Clears the terminal screen.
16-mv- moves the file data1 to the folder newdata and deletes the old one.
17-df-Shows the disk usage. This will tell you how much disk space you have left on your hard drive as well as the floppy.
18-pwd-Shows what directory (folder) you are in.
In Linux, your home directory is /home/particle

19-man -This command brings up the online Unix
manual.

20-kill-Use kill command to terminate a process

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