run

run s -- runs the command string s by passing it to the operating system.

The return value is the exit status of the command.

     i1 = -rw-r--r--  1 root         3072 Oct 14  1994 /etc/gettytab
     -rw-r--r--  1 root          140 Oct 22 16:18 /etc/group
     run "ls -l /etc/g*"
     
     o1 = 0

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