In today's IT environment, harried system administrators are finding themselves more overworked than ever. This book helps them regain some of the lost time spent creating and testing shell scripts, and guides readers through more than 150 much-needed and practical real-world examples. Because all scripts found in this book are POSIX (Portable Operating System Interface)-compliant, they are supported by all major shell variants, including Bash, Zsh and sh, among others. File conversion, system administration, and resource monitoring are just a few of the topics covered in this highly practical shell scripting reference.
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Chris F.A. Johnson was introduced to Unix in 1990, and learned shell scripting because there was no C compiler on the system. His first major project was a menu-driven, user-extensible database system with report generator. Johnson constantly writes scripts to automate system administration tasks, and his recent shell projects have included a member database, menuing system, and POP3 mail filtering and retrieval. When not pushing shell scripting to the limit, Johnson teaches chess and composes cryptic crosswords.
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