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Full Discussion: Pattern Replacement
Top Forums UNIX for Dummies Questions & Answers Pattern Replacement Post 302188603 by palash2k on Thursday 24th of April 2008 02:51:45 AM
Old 04-24-2008
Pattern Replacement
There is a requirement that i need to replaced a pattern by another pattern in all the files in my entire file system. there are 1000s of file in the system. let the pattern is "calcuta". i have to replace this pattern by "kolkata" in all those files which contain "calcuta".

I am only able to find out all those list file in the entire file system which contain the pattern using the command.

Code:
find / -type f | xargs grep -il "calcuta"

and usind vi i can do the job. but it is very lengthy process. everytime i have open file to replace the pattern.

can anybody please help me how i can easily do the job? is it possible to do it in sinle command line. is there any extension that i tried to do the rest?
Last edited by Yogesh Sawant; 04-24-2008 at 04:28 AM.. Reason: added code tags
 

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LEARN ABOUT NETBSD

zegrep

ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME

     zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files

SYNOPSIS

     zgrep [grep-flags] [--] pattern [files ...]

     zegrep [grep-flags] [--] pattern [file ...]

     zfgrep [grep-flags] [--] pattern [file ...]

DESCRIPTION

     zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1).

     The grep-flags and pattern arguments are passed on to grep(1).  If an -e flag is found in the grep-flags, zgrep will not look for a pattern
     argument.

     zegrep calls egrep(1), while zfgrep calls fgrep(1).

EXIT STATUS

     In case of missing arguments or missing pattern, 1 will be returned, otherwise 0.

SEE ALSO

     egrep(1), fgrep(1), grep(1), gzip(1), zcat(1)

AUTHORS

     Thomas Klausner <wiz@NetBSD.org>

BSD
								 December 28, 2003							       BSD
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