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Full Discussion: perl script to search n place a pattern
Top Forums Shell Programming and Scripting perl script to search n place a pattern Post 302572452 by zedex on Thursday 10th of November 2011 04:22:22 AM
Old 11-10-2011
Quick code, but shell script

Code:
$ if [ grep -q 'abcd' a.txt ]; then 
<DO SOMETHING / LEAVE IT BLANK>
else
  echo "abcd" >> a.txt
fi

* in perl code, you would read a file in an array
* Use perl - grep function to check if abcd exist?
* if yes do what even you want
* if it does not, open another file in write mode add "abcd" to end of old array ( $Array[-1] )
* print it on new file handler
* move new_file -> old_file
 

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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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