1 1 2.3 Exit Status 1 =============== 1 1 Normally the exit status is 0 if a line is selected, 1 if no lines were 1 selected, and 2 if an error occurred. However, if the ‘-q’ or ‘--quiet’ 1 or ‘--silent’ option is used and a line is selected, the exit status is 1 0 even if an error occurred. Other ‘grep’ implementations may exit with 1 status greater than 2 on error. 1