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1.1 ! root 1: .TH FALSE 1 "11 January 1982" ! 2: .SH NAME ! 3: false, true \- provide truth values ! 4: .SH SYNOPSIS ! 5: .B true ! 6: .PP ! 7: .B false ! 8: .SH DESCRIPTION ! 9: .I True ! 10: and ! 11: .I false ! 12: are usually used in a Bourne shell script. ! 13: They test for the appropriate status "true" or "false" before running ! 14: (or failing to run) a list of commands. ! 15: .SH EXAMPLE ! 16: .IP ! 17: .nf ! 18: while false ! 19: do ! 20: command list ! 21: done ! 22: .SH "SEE ALSO" ! 23: csh(1), ! 24: sh(1), ! 25: true(1) ! 26: .SH DIAGNOSTICS ! 27: .I False ! 28: has exit status nonzero.
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