Command Line Input and Output Redirection

This section provides a quick introduction of C shell command line standard input and output redirection.

C Shell Command Line Input and Output Redirection: Changes input and/or output from terminal console to other commands or files.

Input and output redirection uses the following formats:

Examples of C shell command line input and output redirection:

>csh
%ls -al > file list
%more file list
drwx--x--x   6 herong   users        1024 Jul 21 21:56 .
drwxr-xr-x   4 root     root         1024 May 24 22:03 ..
-rw-r--r--   1 herong   users         242 Jul 21 21:56 .cshrc
-rw-r--r--   1 herong   users          76 Jan  4 03:15 .login
-rwxr-xr-x   1 herong   users        3992 Aug 19 10:19 a.out
-rw-r--r--   1 herong   users           0 Jul 21 20:27 file list
-rw-r--r--   1 herong   users          40 Aug 19 10:18 hello.c
-rw-r--r--   1 herong   users           0 Jul 21 21:56 new file
%tar -cO * | compress > backup.tar.Z
%ls -l
-rwxr-xr-x   1 herong   users        3992 Aug 19 10:19 a.out
-rw-r--r--   1 herong   users        2677 Jul 22 20:28 backup.tar.Z
-rw-r--r--   1 herong   users         376 Jul 22 20:27 file list
-rw-r--r--   1 herong   users          40 Aug 19 10:18 hello.c
-rw-r--r--   1 herong   users           0 Jul 21 21:56 new file
%uncompress -c backup.tar.Z | tar -t
a.out
file list
hello.c
new file

Table of Contents

 About This Book

 1957 - FORTRAN Language Developed by IBM

 1970 - UNIX Operating System Developed by AT&T Bell Labs

 1971 - FTP Protocol Created by Abhay Bhushan

 1972 - C Language Developed by Dennis Ritchie

 1976 - vi Text Editor Developed by Bill Joy

 1977 - Apple II Designed by Steve Jobs and Steve Wozniak

 1977 - The Bourne Shell Developed by Stephen Bourne

1978 - The C Shell Developed by Bill Joy

 What Is the C Shell?

 C Shell Command Line

 Command Line History Substitution

 Command Line Alias Substitution

Command Line Input and Output Redirection

 Command Line Variable Substitution

 C Shell Command Line Examples

 ".cshrc" - C Shell Script File and

 1978 - Bash (Bourne-Again Shell) Developed by Brian Fox

 1979 - The Tcsh (TENEX C Shell) Developed by Ken Greer

 1983 - "Sendmail" Mail Transfer Agent Developed by Eric Allman

 1984 - Macintosh Developed by Apple Inc.

 1984 - X Window System Developed a MIT Team

 1991 - WWW (World Wide Web) Developed by Tim Berners-Lee

 1991 - Gopher Protocol Created by a University of Minnesota Team

 1995 - Java Language Developed by Sun Microsystems

 1995 - PHP: Hypertext Preprocessor Created by Rasmus Lerdorf

 2002 - .NET Framework Developed by Microsoft

 References

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