Rev | Line | |
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[20] | 1 | # tests of return value inversion |
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| 2 | # placeholder for future expansion |
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| 3 | |
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| 4 | # user subshells (...) did this wrong in bash versions before 2.04 |
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| 5 | |
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| 6 | ! ( echo hello | grep h >/dev/null 2>&1 ); echo $? |
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| 7 | ! echo hello | grep h >/dev/null 2>&1 ; echo $? |
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| 8 | |
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| 9 | ! true ; echo $? |
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| 10 | ! false; echo $? |
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| 11 | |
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| 12 | ! (false) ; echo $? |
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| 13 | ! (true); echo $? |
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| 14 | |
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| 15 | ! true | false ; echo $? |
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| 16 | ! false | true ; echo $? |
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| 17 | |
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| 18 | ! (true | false) ; echo $? |
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| 19 | ! (false | true) ; echo $? |
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