I ended up with this in my .bashrc so I didn't have to keep remembering how to use comm each time: justA() { comm -23 <(sort -u "$1") <(sort -u "$2"); } j

I ended up with this in my .bashrc so I didn't have to keep remembering how to use comm each time: justA() { comm -23 <(sort -u "$1") <(sort -u "$2"); } justB() { comm -13 <(sort -u "$1") <(sort -u "$2"); } bothAB() { comm -12 <(sort -u "$1") <(sort -u "$2"); }