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Full Discussion: perl:: search for tow pattern and replace the third pattern
Top Forums Shell Programming and Scripting perl:: search for tow pattern and replace the third pattern Post 302375417 by durden_tyler on Friday 27th of November 2009 03:50:21 PM
Old 11-27-2009
Quote:
Originally Posted by nitindreamz
...
i want to search the both like if /bbbbb && /nnnnnn string separately
...and want to replace ttttt with ppppp
...
Code:
$
$ cat -n f3
     1  aaaa bbbbb nnnnnn ttttt
     2  xxxx nnnnnn bbbbb ttttt
     3  cccc bbbbb nnnnnn ppppp
     4  dddd ccccc nnnnnn ttttt
     5  ffff bbbbb oooooo ttttt
$
$ perl -i.bkup -pe 's/ttttt/ppppp/ if /bbbbb/ && /nnnnnn/' f3
$
$ cat -n f3
     1  aaaa bbbbb nnnnnn ppppp
     2  xxxx nnnnnn bbbbb ppppp
     3  cccc bbbbb nnnnnn ppppp
     4  dddd ccccc nnnnnn ttttt
     5  ffff bbbbb oooooo ttttt
$
$

Note that since you are not checking for the order of those two strings, a line that has "nnnnnn" to the left of "bbbbb" will also be affected (line # 2 for example).

tyler_durden
 

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LEARN ABOUT PHP

mb_ereg_search_init

MB_EREG_SEARCH_INIT(3)							 1						    MB_EREG_SEARCH_INIT(3)

mb_ereg_search_init - Setup string and regular expression for a multibyte regular expression match

SYNOPSIS

       bool mb_ereg_search_init (string  $string, [string  $pattern], [string  $option = "msr"])

DESCRIPTION

       mb_ereg_search_init(3)  sets  $string  and  $pattern  for  a  multibyte	regular  expression.  These values are used for mb_ereg_search(3),
       mb_ereg_search_pos(3), and mb_ereg_search_regs(3).

PARAMETERS

	      o $string
		- The search string.

	      o $pattern
		- The search pattern.

	      o $option
		- The search option.

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

NOTES

       Note

	      The internal encoding or the character encoding specified by mb_regex_encoding(3) will be used as the character  encoding  for  this
	      function.

SEE ALSO

       mb_regex_encoding(3), mb_ereg_search_regs(3).

PHP Documentation Group 												    MB_EREG_SEARCH_INIT(3)
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