I have some script that produces output with colors and I need to remove the ANSI codes. #!/bin/bash exec > >(tee log) # redirect the output to a file but keep it on stdout exec 2>&1 ./somescript The output is (in log file): java (pid 12321) is running...@[60G[@[0;32m OK @[0;39m] I didn't know how to put the ESC character here, so I put @ in its place. I changed the script into: #!/bin/bash exec >