I have something like this in my bashrc: preexec () { # shellcheck disable=2034 _CMD_START="$(date +%s)" } trap 'preexec; trap - DEB

I have something like this in my bashrc: preexec () { # shellcheck disable=2034 _CMD_START="$(date +%s)" } trap 'preexec; trap - DEBUG' DEBUG PROMPT_COMMAND="_CMD_STOP=\$(date +%s) let _CMD_ELAPSED=_CMD_STOP-_CMD_START if [ \$_CMD_ELAPSED -gt 5 ]; then _TIME_STR=\" (\${_CMD_ELAPSED}s)\" else _TIME_STR='' fi; " PS1="\n\u@\h \w\$_TIME_STR\n\\$ " PROMPT_COMMAND+="trap 'preexec; trap - DEBUG' DEBUG" Whenever a command takes more than 5 s it tells me exactly how long at the next prompt. I didn't know about `$SECONDS` so I'm going to change it to use that.