UNIX TUTORIALS - Unix - File Management

Unix - File Management

Listing Files:

Prefix	Description
-	Regular file, such as an ASCII text file, binary executable, or hard link.
b	Block special file. Block input/output device file such as a physical hard drive.
c	Character special file. Raw input/output device file such as a physical hard drive
d	Directory file that contains a listing of other files and directories.
l	Symbolic link file. Links on any regular file.
p	Named pipe. A mechanism for interprocess communications
s	Socket used for interprocess communication.

Listing Files:

$ls

ADVERTISEMENTS

$ls bin hosts lib res.03 ch07 hw1 pub test_results ch07.bak hw2 res.01 users docs hw3 res.02 work

$ls -l total 1962188 drwxrwxr-x 2 amrood amrood 4096 Dec 25 09:59 uml -rw-rw-r-- 1 amrood amrood 5341 Dec 25 08:38 uml.jpg drwxr-xr-x 2 amrood amrood 4096 Feb 15 2006 univ drwxr-xr-x 2 root root 4096 Dec 9 2007 urlspedia -rw-r--r-- 1 root root 276480 Dec 9 2007 urlspedia.tar drwxr-xr-x 8 root root 4096 Nov 25 2007 usr drwxr-xr-x 2 200 300 4096 Nov 25 2007 webthumb-1.01 -rwxr-xr-x 1 root root 3192 Nov 25 2007 webthumb.php -rw-rw-r-- 1 amrood amrood 20480 Nov 25 2007 webthumb.tar -rw-rw-r-- 1 amrood amrood 5654 Aug 9 2007 yourfile.mid -rw-rw-r-- 1 amrood amrood 166255 Aug 9 2007 yourfile.swf drwxr-xr-x 11 amrood amrood 4096 May 29 2007 zlib-1.2.3 $

Meta Characters:

$ls ch*.doc

ch01-1.doc ch010.doc ch02.doc ch03-2.doc ch04-1.doc ch040.doc ch05.doc ch06-2.doc ch01-2.doc ch02-1.doc c

$ls *.doc

Hidden Files:

$ ls -a . .profile docs lib test_results .. .rhosts hosts pub users .emacs bin hw1 res.01 work .exrc ch07 hw2 res.02 .kshrc ch07.bak hw3 res.03 $

Creating Files:

$ vi filename

This is unix file....I created it for the first time..... I'm going to save this content in this file.

$ vi filename $

Editing Files:

$ vi filename

Display Content of a File:

$ cat filename This is unix file....I created it for the first time..... I'm going to save this content in this file. $

$ cat filename -b 1 This is unix file....I created it for the first time..... 2 I'm going to save this content in this file. $

Counting Words in a File:

$ wc filename 2 19 103 filename $

$ wc filename1 filename2 filename3

Copying Files:

$ cp source_file destination_file

$ cp filename copyfile $

Renaming Files:

$ mv old_file new_file

$ mv filename newfile $

Deleting Files:

$ rm filename

$ rm filename $

$ rm filename1 filename2 filename3 $