Git blame - Figuring Out Who Modified a Line With Git

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`git blame` lets you pick a file and show who last changed every line. To find out who changed a line, simply run the following command where `myfile.txt is the file you want to check. Other useful Git Blame options include showing an author's email and ignoring whitespace with git blame. You can also show line changes from the bottom up (just add the reverse changes in the bottom, and going up at the starting starting at at least at the end of the line, meaning starting at the bottom.