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34 Cards in this Set
- Front
- Back
This option with the cp command backs up the destination file before overwriting it.
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-b
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What character is used in a filename to specify a backup file
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~
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Using cp or mv with this option prompts for verify before overwriting a file.
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-i
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Use this option with CP or mv to force over write of existing file
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-f
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To preserve file attributes with cp & copy the directory hierarchy as well use this option?
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-P
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which switch is used with the mv or rm command to prompt before overwriting destination file?
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-i
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This switch used with the mv command causes the name of each file to be displayed before it is moved.
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-v
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The mkdir can create the parent and child directories in a single command by using this option?
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-p
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The default permissions for the new directory allow the owner, the owner's group, and all other users what permission? (represented by octal # 777)
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read, write and execute
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The default permissions of mkdir can be changed by using this option?
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-m
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To delete a directory using rm, use this option? To delete without individual confirmat use this option?
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-r, -fr
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Using this option lets you remove entire directory hierarchies that consist only of empty directories.
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-p
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Using this option with CP will force an overwrite of existing files.
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-f
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To recursively copy one directory's contents to another, use either of these options?
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-r or -R
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You want to overwrite June report with the July report. What command would you use to accomplish this task?
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cp -f July June
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What option deletes all the files in the directory and then deletes the directory itself?
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-r,
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What option recursively deletes files and directories without confirmation?
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-fr
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Unlike "rm -r", using this command can only remove empty directories?
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rmdir
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With rmdir you can remove all empty directories in a directory hierarchy using this option?
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-p
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You want to delete the directory June/reports only if it is completely empty. If removing June/reports leaves the June directory empty, you want to delete June as well
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rmdir -p June/reports
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This pattern character expression is used to match special characters?
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\x
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This pattern expression matches to the beginning of a line?
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^pattern
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This pattern expression matches to the end of a line?
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pattern$
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This command searches a file contents for a pattern or simple string.
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global regular expression print (grep)
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With grep, this option shows the line numbers of each line containing the search string.
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-n
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With grep, if you only want to know the # of lines containing the pattern, use this option?
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-c
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Using grep, if you want to see lines that do not contain a certain word or phrase, use this option?
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-v
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To have grep use a file to list the files that need to be searched for a word or phrase, use this option?
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-f
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When using a file list, grep's default action is to list the name of each file as a header before listing the results. This behavior can be suppressed by using this option.
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-h
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Use this option for grep to be case insensitive?
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-i
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If you want grep to find only occurrences where the pattern is a word unto itself, use this option?
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-w
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To have grep can find the names of files containing an expression without displaying the lines where the expression occurs use this option?
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-l
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to have grep supress error messages on files it can't read, use this option?
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-s
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How would you find every occurrence of the word dog (regardless of case) in a file called pets?
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grep -iw dog pets
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