The ll command + metacharacters Post: 302450930

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Is there a way to use metacharacters in a loop or in an if. I want to allow a user to enter Y, y, Yes, yes, Yah, etc... in a loop I tried: read response while *" ] do........ and while *" ] do ......... this works for grep or egrep but not in loops Why??????

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:confused:Hi , Can someone please advise what is the meaning of metacharacters in below code? a_PROCESS=${0##*/} a_DPFX=${a_PROCESS%.*} a_LPFX="a_DPFX : $$ : " a_UPFX="Usage: $a_PROCESS" Regards, gehlnar

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I'm trying to create a bash script that takes a URL as one of its arguments like this: ./script.sh http://url.cfm?asdf&asdf=234 variable=$1 echo $variable I'm having trouble storing the URL because it contains the meta character "&" which is being interpreted... thus when I run the...

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I have prepared a script to submit a string in a txt file. However there are somethings that I have to check before submitting the string in the txt file. One of those checks is to determine whether the string entered contains any metacharacters. I have tried sth like; echo "string" | grep -v ...

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1) I want to display all the files in a directory that start with the word chapter, are followed by a digit 1,2,6,8, or 9 and end with .eps or .prn so I came up with this file ~/temp/chapter.eps ~/temp/chapter.prn but is there a better way, i.e. combining both file types into the command? ...

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I have a file which contains a list of paths separated by a new line character. e.g /some/path/to/a/file.png /some/path to/another/file.jpeg /some path/to yet/another/file Notice that these paths may contain metacharacters, the spaces for example are also not escaped. If I wanted...

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Command line not recognizing metacharacters in awk

Hello, I'm new to command line coding (and coding in general) and have run into a problem. I'm using awk to perform a global find and replace in a text file in the Terminal provided by Mac. Here is a sample of my textfile where the fields are separated by tabs. 1Ps 1,1 VWB/(J VWB VWB...

LEARN ABOUT MOJAVE

ptargrep

PTARGREP(1)						 Perl Programmers Reference Guide					       PTARGREP(1)

NAME

       ptargrep - Apply pattern matching to the contents of files in a tar archive

SYNOPSIS

	 ptargrep [options] <pattern> <tar file> ...

	 Options:

	  --basename|-b     ignore directory paths from archive
	  --ignore-case|-i  do case-insensitive pattern matching
	  --list-only|-l    list matching filenames rather than extracting matches
	  --verbose|-v	    write debugging message to STDERR
	  --help|-?	    detailed help message

DESCRIPTION

       This utility allows you to apply pattern matching to the contents of files contained in a tar archive.  You might use this to identify all
       files in an archive which contain lines matching the specified pattern and either print out the pathnames or extract the files.

       The pattern will be used as a Perl regular expression (as opposed to a simple grep regex).

       Multiple tar archive filenames can be specified - they will each be processed in turn.

OPTIONS

       --basename (alias -b)
	   When matching files are extracted, ignore the directory path from the archive and write to the current directory using the basename of
	   the file from the archive.  Beware: if two matching files in the archive have the same basename, the second file extracted will
	   overwrite the first.

       --ignore-case (alias -i)
	   Make pattern matching case-insensitive.

       --list-only (alias -l)
	   Print the pathname of each matching file from the archive to STDOUT.  Without this option, the default behaviour is to extract each
	   matching file.

       --verbose (alias -v)
	   Log debugging info to STDERR.

       --help (alias -?)
	   Display this documentation.

COPYRIGHT

       Copyright 2010 Grant McLean <grantm@cpan.org>

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.18.2							    2018-08-17							       PTARGREP(1)

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Metacharacters analysis

Discussion started by: gehlnar