/Shell/Bash/Shell get all lines that are in one file and not another

Shell get all lines that are in one file and not another

Bash return lines from one file that arent in another

# Example usage:
awk 'NR==FNR { b[$0] = 1; next } !b[$0]' input_file_1 input_file_2
# This returns all lines of input_file_2 that aren't found in 
# input_file_1

# Note, remove the ! to return all lines in common between the files

Source: unix.stackexchange.com

Shell get all lines that are in one file and not another

 diff file2 file1 | grep '^>' | sed 's/^>\ //'

Source: stackoverflow.com

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