I like bash's <(...) operator and often use diff -u with it: diff -u <(cat file1) <(cat file2) Obviously, the 'cat' commands can be more complex commands, w

I like bash's <(...) operator and often use diff -u with it: diff -u <(cat file1) <(cat file2) Obviously, the 'cat' commands can be more complex commands, which make this more interesting.