Script to find & replace a multiple lines string across multiple php files and subdirectories Post: 302604153

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Top Forums Shell Programming and Scripting Script to find & replace a multiple lines string across multiple php files and subdirectories Post 302604153 by agama on Saturday 3rd of March 2012 11:07:47 AM

03-03-2012

Registered User

For starters, I'd rewrite the script you posted. The grep isn't needed, and since you're looking for a fixed set of files (*.php I assume), and fixed replace criteria, you don't need to worry about command line parameters. (You should if this is more than a one-off script, but I'll assume you don't need a script that you can run with different criteria.)

The basic script:

Code:

#!/usr/bin/env ksh

cd /directory/path/where/you/want/to/start
find . -name "*.php" | while read file
do
    echo "munging: $file"             # nice to see progress as it works
    mv "$file" "$file-"      # back it up

    ### insert sed or awk here ####  the sed in next line is for illustration only 
    sed 's/nosuchstringinthefile/noscuhreplacement/' "$file-" >"$file"
    if (( $? > 0 ))            # handle failure by putting the file back in place
    then
        echo "edit of $file failed" >&2
        mv "$file-" "$file"             # restore original
    else
        rm "$file-"               # worked, delete backup 
    fi
done

The tricky question is what criteria you need to determine which lines of the files to delete. Depending on what it is, the 'insert sed here' line in the previous script will need to change to do the right thing.

If your block of code is bounded by a unique string or phrase in the first and last lines then it will be a simple sed. The more complicated the criteria, the more complicated the code will need to be. Bottom line: post your criteria for deletion and someone will give you some help with writing a sed/awk or something that will delete things.

As for creating a script...
Start your favorite text editor, insert the code from above, or other of your choice, and save the file. Then at the command line, enter this command (assumes the file you saved was called delete_frm_php.ksh):

Code:

chmod 755 delete_frm_php.ksh

You then can invoke your script from the command line by typing delete_frm_php.ksh

agama

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LEARN ABOUT ULTRIX

lookbib

lookbib(1)						      General Commands Manual							lookbib(1)

Name
       indxbib, lookbib - build inverted index for a bibliography, lookup bibliographic references

Syntax
       indxbib database...
       lookbib database

Description
       The  makes  an inverted index to the named databases (or files) for use by and These files contain bibliographic references (or other kinds
       of information) separated by blank lines.

       A bibliographic reference is a set of lines, constituting fields of bibliographic information.  Each field starts on a line beginning  with
       a  ``%'',  followed  by	a key-letter, then a blank, and finally the contents of the field, which may continue until the next line starting
       with ``%''.

       The command is a shell script that calls and The first program, truncates words to 6 characters, and maps upper case  to  lower	case.	It
       also  discards words shorter than 3 characters, words among the 100 most common English words, and numbers (dates) < 1900 or > 2000.  These
       parameters can be changed.  The second program, inv, creates an entry file (.ia), a posting file (.ib), and a tag file (.ic),  all  in  the
       working directory.

       The command uses an inverted index made by to find sets of bibliographic references.  It reads keywords typed after the ``>'' prompt on the
       terminal, and retrieves records containing all these keywords.  If nothing matches, nothing is returned except another ``>'' prompt.

       It is possible to search multiple databases, as long as they have a common index made by In that case, only the first argument given to	is
       specified to

       If  does  not  find the index files (the .i[abc] files), it looks for a reference file with the same name as the argument, without the suf-
       fixes.  It creates a file with a '.ig' suffix, suitable for use with It then uses this fgrep file to find references.  This method is  sim-
       pler to use, but the .ig file is slower to use than the .i[abc] files, and does not allow the use of multiple reference files.

Files
       x.ia, x.ib, x.ic, where x is the first argument, or if these are not present, then x.ig, x

See Also
       addbib(1), lookbib(1), refer(1), roffbib(1), sortbib(1),

																	lookbib(1)