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    <p>I created a file at /usr/local/git/findsed.sh , with the following contents:</p> <pre><code>find . -name 'githubDirToSubmodule.sh' -exec sed -i '' -e 's/What I want to remove//g' {} \; </code></pre> <p>I ran the command:</p> <pre><code>git filter-branch --tree-filter "sh /usr/local/git/findsed.sh" </code></pre> <p><strong>Explanation of commands</strong></p> <p>When you run git filter-branch, this goes through each revision that you ever committed, one by one. --tree-filter runs the findsed.sh script on each committed revision, saves it, then progresses to the next revision.</p> <p>The find command finds a specific file or set of files and executes (-exec) the sed editor on that file. sed is a command that takes the regex after s/ and replaces it with the string between / and /g (blank in my example). {} is a reference to the files path that was given by the find command. The file path is fed to sed, so that sed knows what to work on. \; just ends the -exec command.</p> <p>Seperating the shell script and command out into seperate pieces allows for less complication when it comes to quotes '' or "".</p> <p><strong>Peculiarities</strong></p> <p>I successfully implemented this on a mac, and apparently sed is a particular (older?) version on macs. This matters, as it sometimes behaves differently. Make sure to do sed -i '' or else it was adding a "-e" to the end of files, thinking that that was what i wanted to name my backup files. -i '' says dont make backup files, just edit the files in place and no backup file needed.</p> <p>Specifying -name 'filename.sh' helped me avoid another issue that I could not solve. There was another file with .sh and that file ended without a newline character. sed for some reason, would add a newline character to the end, despite the 's/blah/blah/g' not matching anything in that file. So instead of figuring out that issue, I just told the find to ignore all other files.</p> <p><strong>Additional commands that work</strong></p> <p>Additionally, I found these commands to work in the findsed.sh file (only one command at a time, not multple, so comment # the others out):</p> <pre><code>find . -name '.publishNewZenPackFromGithub.sh.swp' -exec rm -f {} \; find . -name '*' -exec grep -H PassToRemove {} \; </code></pre> <p>Enjoy!</p>
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