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 BSD

lookbib

LOOKBIB(1)						      General Commands Manual							LOOKBIB(1)

NAME

       indxbib, lookbib - build inverted index for a bibliography, find references in a bibliography

SYNOPSIS

       indxbib database  ...
       lookbib [ -n ] database

DESCRIPTION

       Indxbib	makes  an  inverted index to the named databases (or files) for use by lookbib(1) and refer(1).  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 ``%''.

       Indxbib is a shell script that calls /usr/libexec/refer/mkey and /usr/libexec/refer/inv.  The first program, mkey,  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; see page 4 of the Refer document by Mike Lesk.   The  second
       program, inv, creates an entry file (.ia), a posting file (.ib), and a tag file (.ic), all in the working directory.

       Lookbib uses an inverted index made by indxbib 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.

       Lookbib will ask if you need instructions, and will print some brief information if you reply ``y''.  The ``-n'' flag turns off the  prompt
       for instructions.

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

       If lookbib 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
       suffixes.   It  creates	a  file  with a '.ig' suffix, suitable for use with fgrep.  It then uses this fgrep file to find references.  This
       method is simpler 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

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

BUGS

       Probably all dates should be indexed, since many disciplines refer to literature written in the 1800s or earlier.

4.2 Berkeley Distribution					 October 22, 1996							LOOKBIB(1)