Bash Scripting

String Manipulations

• To replace all substrings by another, use the following syntax:

echo ${stringZ//abc/xyz}

This would replace all occurences of abc in stringZ by xyz. The following replaces only the first match:

echo ${stringZ/abc/xyz}

Special Symbols

• "$@" expands to all command-line parameters.

Command Line Utilities

• sdiff -s will generate a formatted output of the differences between two files. Very useful.