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Run grepplan9 in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command grepplan9 that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



grep, g - search a file for a pattern


grep [ option ... ] pattern [ file ... ]

g [ option ... ] pattern [ file ... ]


Grep searches the input files (standard input default) for lines that match the pattern, a
regular expression as defined in regexp(7) with the addition of a newline character as an
alternative (substitute for |) with lowest precedence. Normally, each line matching the
pattern is `selected', and each selected line is copied to the standard output. The
options are

-c Print only a count of matching lines.
-h Do not print file name tags (headers) with output lines.
-e The following argument is taken as a pattern. This option makes it easy to specify
patterns that might confuse argument parsing, such as -n.
-i Ignore alphabetic case distinctions. The implementation folds into lower case all
letters in the pattern and input before interpretation. Matched lines are printed
in their original form.
-l (ell) Print the names of files with selected lines; don't print the lines.
-L Print the names of files with no selected lines; the converse of -l.
-n Mark each printed line with its line number counted in its file.
-s Produce no output, but return status.
-v Reverse: print lines that do not match the pattern.
-f The pattern argument is the name of a file containing regular expressions one per
-b Don't buffer the output: write each output line as soon as it is discovered.

Output lines are tagged by file name when there is more than one input file. (To force
this tagging, include /dev/null as a file name argument.)

Care should be taken when using the shell metacharacters $*[^|()=\ and newline in pattern;
it is safest to enclose the entire expression in single quotes '...'. An expression
starting with '*' will treat the rest of the expression as literal characters.

G invokes grep with -n and forces tagging of output lines by file name. If no files are
listed, it searches all files matching

*.C *.b *.c *.h *.m *.cc *.java *.cgi *.pl *.py *.tex *.ms



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