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busybox sh negation before [ ]
Posted by Anonymous on Mon 2nd Sep 2019 07:22
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  1. # demo for negation ('!') before an [ ] expression. This should work
  2. # in POSIX shells, and seems to work in busybox sh BusyBox v1.21.1
  3. # (Ubuntu 1:1.21.0-1ubuntu1), too
  4. $ busybox sh -c 'if [ -f asdsad ] ; then echo hi ; else echo ho ; fi'
  5. ho
  6. $ busybox sh -c 'if ! [ -f asdsad ] ; then echo hi ; else echo ho ; fi'
  7. hi

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