Sams Teach Yourself Shell Programming in 24 Hours by Sriranga Veeraraghavan

By Sriranga Veeraraghavan

In exactly 24 classes of 1 hour or much less, you can be up and working. utilizing an easy, step by step procedure, each one lesson builds upon the former one, permitting you to benefit the necessities of UNIX shell programming from the floor up.

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Unlike the printed version, where you had to know the section where you needed to look for a particular manual page, the man command looks in all the sections for the information you requested. This makes it much easier to get help using the man pages. Sams Teach Yourself Shell Programming in 24 Hours Hour 2: Script Basics Sections in this Chapter: The UNIX System Shell Initialization Getting Help Summary Questions Terms Contents Index Previous Chapter Next Chapter Previous Section Next Section © Copyright Macmillan Computer Publishing.

Libraries are used to store non-kernel-related functions used by C programmers. 4 Covers file formats. This manual specifies the format of files such as /etc/passwd. 5 Also covers file formats. 6 Includes the instructions for playing the games that came with UNIX. 7 Covers device drivers. 8 Covers system maintenance. Unlike the printed version, where you had to know the section where you needed to look for a particular manual page, the man command looks in all the sections for the information you requested.

The shell undergoes a phase called initialization to set up these parameters. This is usually a two step process that involves the shell reading the following files: ● ● /etc/profile profile The process is as follows: 1. The shell checks to see whether the file /etc/profile exists. 2. If it exists, the shell reads it. Otherwise, this file is skipped. No error message is displayed. 3. profile exists in your home directory. Your home directory is the directory that you start out in after you log in.

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