07.bash1.ans.even.RH4

Practical Guide to Fedora and Red Hat Enterprise Linux, A (4th Edition)

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1 Answers to Even-numbered Exercises 1. What command? 2. Using sort as a filter, rewrite the following sequence of commands: $ sort list > temp $ lpr temp $ rm temp $ cat list | sort | lpr 3. Whatnning? 4. Assume that the following files are in the working directory: $ ls intro notesb ref2 section1 section3 section4b notesa ref1 ref3 section2 section4a sentrev Give commands for each of the following, using wildcards to express file- names with as few characters as possible. a. List all files that begin with section . $ ls section * b. List the section1 , section2 , and section3 files only. $ ls section[1-3] c. List the intro file only. $ ls i * d. List the section1 , section3 , ref1 , and ref3 files. $ ls * [13] 5. Refer to tmands will 7
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2 6. Give a command to a. Redirect the standard output from a sort command into a file named phone_list . Assume that the input file is named numbers . $ sort numbers > phone_list b. Translate all occurrences of the characters [ and { to the character ( , and all occurrences of the characters ] and } to the character ) in the file permdemos.c
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