Basic LINUX Posted by MOHAMMED ABDUL HAMEED on 8:16 AM

Basic Linux Command

1. To check the present working directory

 [root@database ~]# pwd
/root

2. To show the contents of a directory (folder)

[root@database ~]# ls

3145.zip  args1    database_notes  Documents   ifcfg-eth1_March25  linux_image.iso  names         phonenubers  uln_migrate             uln_register.tar
args      BegPerl  Desktop         hello2.plx  index.html.1        mbox             oradiag_root  scripts     

3. To see more details including the permission regarding the contents of a

directory (folder)

[[root@database ~]# ls -l

total 3511620

-rw-r--r--  1 root   root       422670 Dec 30 10:29 3145.zip

-rwxr--r--  1 root   root          105 Apr  8 21:45 args

-rwxr--r--  1 root   root           32 Apr  8 21:51 args1

drwxr-xr-x 17 root   root         4096 Dec 30 10:31 BegPerl

-rw-r--r--  1 root   root         5022 Jan  5 09:55 database_notes

drwxr-xr-x  3 root   root         4096 Mar 25 04:45 Desktop

drwx------  3 root   root         4096 Mar 30 21:33 Documents

4. To see all contents including hidden files of a directory (folder)

[root@database ~]# ls -a             

 .bashrc         .eggcups         .gstreamer-0.10     mbox                 scripts                 uln_register.tar             .xauthgXJKsS - 

5 . To see tree structure of nested directories

[root@database ~]# ls -R /opt

/opt:

ORCLfmap

sqldeveloper

sun

VBoxGuestAdditions-4.2.6

/opt/ORCLfmap:

prot1_32