On 6/20/18 9:25 AM, Tomáš Čech wrote: > Hi, > > > when comparing strange behaviors of different shell implementations Tomas > Janousek found this bug > > When using BASH as sh shell... > > $ ls -l /bin/sh > lrwxrwxrwx 1 root root 4 Jun 13 16:25 /bin/sh -> bash > > ...internal shell command `set' propagates environment variable to the > process its running: > > $ /bin/sh > sh-4.4$ VARIABLE=value set -o noglob > sh-4.4$ env | grep VARIABLE > VARIABLE=value > sh-4.4$
Posix requires this behavior, which dates back to the Bourne shell, for assignment statements that precede special builtins: http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_14 It used to require the same behavior for assignment statements preceding shell function calls, but that was removed in the most recent update. -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, UTech, CWRU c...@case.edu http://tiswww.cwru.edu/~chet/
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