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ovs-macros.at: Better hide 'exec -a' checking.
There is some issue with parsing of redirection options on some shells. For example: $ (exec -a name true) 2>&1 >/dev/null || echo "failed" sh: 10: exec: -a: not found failed $ (exec -a name true) >/dev/null 2>&1 || echo "failed" failed So, the order of redirections matters for some reason. Let's replace our current version with simple redirection of stderr. This version seems to work in most of shells except [t]csh. But it's really tricky to write portable redirections that works with csh and this shell will not be used by the testsuite on most of the systems. With the new version: # cat test.sh ((exec -a myname true 2>/dev/null) && echo "OK") || echo "fail" # sh ./test.sh fail # bash ./test.sh OK # tcsh ./test.sh -a: Command not found. fail Signed-off-by: Ilya Maximets <i.maximets@samsung.com> Signed-off-by: 0-day Robot <robot@bytheb.org>
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