[Bug 5498] New: ash is incorrect parsing commands containing &>

bugzilla at busybox.net bugzilla at busybox.net
Sun Sep 2 20:10:49 UTC 2012


https://bugs.busybox.net/show_bug.cgi?id=5498

           Summary: ash is incorrect parsing commands containing &>
           Product: Busybox
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Standard Compliance
        AssignedTo: unassigned at busybox.net
        ReportedBy: bugdal at aerifal.cx
                CC: busybox-cvs at busybox.net
   Estimated Hours: 0.0


Consider for example the command:

    echo hello &> world

In both bash and Busybox ash, this command results in the synchronous execution
of echo with its output directed to a file named world. However, per the shell
grammar, the & should be interpreted as a separator_op, i.e. the complete
command is a list, separated by the & operator, where the first simple command
echo hi is run in the background and the second simple command is a pure
redirection which creates an empty file named world.

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