Computer History Notes - Herong's Tutorial Notes - v3.13, by Herong Yang
Command Line Alias Substitution
This section provides a quick introduction of C shell command line alias substitution.
C Shell Command Line Alias Substitution: Replaces user defined aliases with their definitions.
Aliases can be defined with the "alias" command. For example, the following command defines an alias of "dir" with the definition of "ls -al". With this alias, you can use the DOS command "dir" to list files in the current directory:
%alias dir 'ls -al'
Another example, the following command defines an alias of "rm" with the definition of "rm -i". With this alias, running the "rm" command becomes running "rm -i" to make the command safer, asking you for a confirmation before removing a file:
%alias rm 'rm -i'
Examples of C shell command line alias substitution:
>csh %alias dir 'ls -al' %alias rm 'rm -i' %dir 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 40 Aug 19 10:18 hello.c -rw-r--r-- 1 herong users 0 Jul 21 21:56 new file %rm a.out rm: remove `a.out'? n %ls -l a.out -rwxr-xr-x 1 herong users 3992 Aug 19 10:19 a.out
Table of Contents
2002 - .NET Framework Developed by Microsoft
1995 - PHP: Hypertext Preprocessor Created by Rasmus Lerdorf
1995 - Java Language Developed by Sun Microsystems
1991 - WWW (World Wide Web) Developed by Tim Berners-Lee
1991 - Gopher Protocol Created by a University of Minnesota Team
1984 - X Window System Developed a MIT Team
1984 - Macintosh Developed by Apple Inc.
1983 - "Sendmail" Mail Transfer Agent Developed by Eric Allman
1979 - The Tcsh (TENEX C Shell) Developed by Ken Greer
1978 - Bash (Bourne-Again Shell) Developed by Brian Fox
►1978 - The C Shell Developed by Bill Joy
Command Line History Substitution
►Command Line Alias Substitution
Command Line Input and Output Redirection
Command Line Variable Substitution
".cshrc" - C Shell Script File and
1977 - The Bourne Shell Developed by Stephen Bourne
1977 - Apple II Designed by Steve Jobs and Steve Wozniak
1976 - vi Text Editor Developed by Bill Joy
1974 - Internet by Vinton Cerf
1972 - C Language Developed by Dennis Ritchie
1971 - FTP Protocol Created by Abhay Bhushan
1970 - UNIX Operating System Developed by AT&T Bell Labs