Linux View File command

1. Cat
   

   NAME
   cat-concatenate files and print on the standard output

   Synopsis
   Cat [OPTION] [FILE] ...

   DESCRIPTION

   -N,--number
   Number all output lines

   -E,--show-ends
   Display $ at end of each line

   [Email protected] ~]# cat-e/etc/inittab
   #$
   # Inittab This file describes how the INIT process should set up$
   # The system in a certain run-level.$
   #$
   # Author:miquel van Smoorenburg, <[email protected]>$
   # Modified for RHS Linux by Marc Ewing and Donnie barnes$

3. More

   NAME
   More-file perusal filter for CRT viewing
   
   Synopsis
   more [-DLFPCSU] [-num] [+/pattern] [+ linenum] [file ...]

   SPACEBAR--Turn back 1 pages, turn to the last page to exit directly

   b--11 Pages forward

   Enter-1 lines down

   Up to 1 lines are not supported

5. Less

   More or less, more convenient than more

   SPACEBAR--Turn back 1 pages

   b--1 Pages forward

   Enter--Turn 1 lines down

   k--up 1 rows

   Q-Exit

6. Head

   NAME
   Head-output the first part of the files
   
   Synopsis
   Head [OPTION] ... [FILE] ...

   DESCRIPTION
   Print the first lines of each FILE to standard output.
   

   [Email protected] ~]# Head/etc/inittab
   #
   # Inittab This file describes how the INIT process should set up
   # The system in a certain run-level.
   #
   # Author:miquel van Smoorenburg, <[email protected]>
   # Modified for RHS Linux by Marc Ewing and Donnie Barnes
   #
   
   # Default RunLevel. The runlevels used by RHS is:
   # 0-halt (do not set Initdefault to this)
   

   -N,--lines=[-]n
   Print the first N lines instead of the first 10

   [Email protected] ~]# head-n 5/etc/inittab
   Head:5/etc/inittab:invalid Number of lines
   [Email protected] ~]# head-n 5/etc/inittab
   #
   # Inittab This file describes how the INIT process should set up
   # The system in a certain run-level.
   #
   # Author:miquel van Smoorenburg, <[email protected]>
   

7. Tail

   NAME
   Tail-output the last part of the files
   
   Synopsis
   tail [OPTION] ... [FILE] ...
   
   DESCRIPTION
   Print the last ten lines of each FILE to standard output.
   [Email protected] ~]# Tail/etc/inittab
   # Run Gettys in standard runlevels
   1:2345:respawn:/sbin/mingetty tty1
   2:2345:respawn:/sbin/mingetty Tty2
   3:2345:respawn:/sbin/mingetty Tty3
   4:2345:respawn:/sbin/mingetty Tty4
   5:2345:respawn:/sbin/mingetty Tty5
   6:2345:respawn:/sbin/mingetty Tty6
   
   # Run XDm in RunLevel 5
   X:5:respawn:/etc/x11/prefdm-nodaemon

   -N,--lines=n
   Output the last N lines, instead of the last 10

   [email protected] ~]# man tail
   [Email protected] ~]# tail-n 5/etc/inittab
   5:2345:respawn:/sbin/mingetty Tty5
   6:2345:respawn:/sbin/mingetty Tty6
   
   # Run XDm in RunLevel 5
   X:5:respawn:/etc/x11/prefdm-nodaemon
   

   -F,--follow[={name|descriptor}]
   Output appended data as the file grows; -F,--follow, and--follow=descriptor are equivalent

9. Cut

   NAME
   Cut-remove sections from all line of files
   
   Synopsis
   Cut [OPTION] ... [FILE] ...
   
   DESCRIPTION
   Print selected parts of lines from each FILE to standard output.

   -D,--delimiter=delim
   Use DELIM instead of the TAB for field delimiter
   
   -F,--fields=list
   Select only these fields; Also print any line this contains no delimiter character, unless the-s option is specified

   [Ro[email protected] ~]# cut-d:-F 1/ETC/PASSWD
   Root
   Bin
   Daemon
   Adm
   Lp
   Sync
   Shutdown
   

Linux View File command