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34 Cards in this Set

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