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Top Forums Shell Programming and Scripting Help needed with shell script to search and replace a set of strings among the set of files Post 302890305 by Amulya on Wednesday 26th of February 2014 06:11:20 AM
Old 02-26-2014
Help needed with shell script to search and replace a set of strings among the set of files

Hi,

I am looking for a shell script which serves the below purpose.
Please find below the algorithm for the same and any help on this would be highly appreciated.

1)set of strings need to be replaced among set of files(directory may contain different types of files)
2)It should search for the type of files for which replace must be done

Please find below the algorithm for the same and any help on this would be highly appreciated.
Code:
######
#below mapped texts must be replaced
######
SEARCH_N_REPLACE={
abc = test1
efg = test2
gfdg = test3
}
######
#directory may contain pdf/txt/jpg files but it should only consider the #mentioned files here {html,htm,css,js}. 
#######

SEARCH_IN_FILES= {html,htm,css,js}


######

sync.log contains file paths as below:
Code:
./testing/file.pdf
./sample.jpg
./example.html
./testcondition.css

######

Code:
foreach line in sync.log #line means each file path 
foreach ext SEARCH_IN_FILES #should search for extension type of file
if line.ext is ext #if matches the extension
foreach term SEARCH_N_REPLACE
searchterm=parse:SEARCH_N_REPLACE
replaceterm=parse:SEARCH_N_REPLACE
perl -pie 's/searchterm/replaceterm'
perl -pie 's/searchterm/replaceterm' line

Thanks in advance!!!
Image

Last edited by Scrutinizer; 02-26-2014 at 07:21 AM.. Reason: code tags for pseudo code and data
 

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REPLACE(1)						       MySQL Database System							REPLACE(1)

NAME
replace - a string-replacement utility SYNOPSIS
replace arguments DESCRIPTION
The replace utility program changes strings in place in files or on the standard input. Invoke replace in one of the following ways: shell> replace from to [from to] ... -- file_name [file_name] ... shell> replace from to [from to] ... < file_name from represents a string to look for and to represents its replacement. There can be one or more pairs of strings. Use the -- option to indicate where the string-replacement list ends and the file names begin. In this case, any file named on the command line is modified in place, so you may want to make a copy of the original before converting it. replace prints a message indicating which of the input files it actually modifies. If the -- option is not given, replace reads the standard input and writes to the standard output. replace uses a finite state machine to match longer strings first. It can be used to swap strings. For example, the following command swaps a and b in the given files, file1 and file2: shell> replace a b b a -- file1 file2 ... The replace program is used by msql2mysql. See msql2mysql(1). replace supports the following options. o -?, -I Display a help message and exit. o -#debug_options Enable debugging. o -s Silent mode. Print less information what the program does. o -v Verbose mode. Print more information about what the program does. o -V Display version information and exit. COPYRIGHT
Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc. This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/. SEE ALSO
For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at http://dev.mysql.com/doc/. AUTHOR
Sun Microsystems, Inc. (http://www.mysql.com/). MySQL 5.1 04/06/2010 REPLACE(1)
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