1. CSCI 330 - The UNIX System Shell Substitution and Sequences
NIU - Department of Computer Science

2. Command Substitution command surrounded by back quotes `
The C Shell
Command Substitution
command surrounded by back quotes `
is replaced by its standard output
newlines in the output are replaced by spaces
Example:
% echo `date`
% ls -l `which passwd`
CSCI The UNIX System
Copyright Department of Computer Science, Northern Illinois University, 2005

3. Command Sequence allows series of commands all at once
The C Shell
Command Sequence
allows series of commands all at once
commands are separated by a semicolon ;
Example:
% date; pwd; ls
CSCI The UNIX System
Copyright Department of Computer Science, Northern Illinois University, 2005