Expert Shell Scripting

Basic Scripting Techniques.- Shell Script Debugging.- Standard Function Library.- Date and Time Manipulation.- Comparisons and Tests.- Accepting Command-Line Options, Switches, and Parameters.- Testing Variables and Assigning Defaults.- Indirect Reference Variables.- Shell Process Tree.- Data Redirection.- Piping Input to read.- System Interaction and Advanced Techniques.- Math from the Shell.- cron.- Self-Linked Scripts.- Throttling Parallel Processes.- Command-Line Editing and History.- Scripting from the Command Line.- Automating User Input with expect.- User Input Timeout.- Instant Keyboard Response.- Directory Copying.- A Brief Tour of the X Display Environment.- X Navigation Window.- Command-Line E-mail Attachments.- Text-Processing One-Liners.- Editing Files in Place.- Evaluating Variables in a Flat File.- Read Piped Input.- Free-Format Output Using cat.- Automating Interactive Processes.- Useful Scripts.- Automating E-mail with procmail.- Process-Management Monitor.- Managing File Counts.- Processes Running from inittab.- Automatic RCS.- Colorful /proc Reporting.- Password-Aging Notification.- A Pseudo-shadow File.- Linux Gold-System Build.- System Snapshots.- Removing Large Files and Log Rolling.- Core Finder.- Network Adapter Failover.