SCO Skills Test

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M

In the following session, root is unable to write to the important file because the tcl script has locked the file. However, all root would have to do is change permissions as shown and then the write would succeed.

# ksh
/tmp # l important lockit
-rwxrwSrw-   1 root     sys            0 Oct 12 12:37 important
-rwxr-xr-x   1 root     sys           82 Oct 12 12:37 lockit
/tmp # cat lockit
#!/bin/tcl
set my [ open important r+ ]
flock -write $my
set fred  [ gets stdin ]
/tmp # ./lockit &
[1]     911
[1] + Stopped (tty input)      ./lockit &
/tmp # date > important
ksh: important: cannot create
/tmp # chmod 766 important
/tmp # l important
-rwxrw-rw-   1 root     sys            0 Oct 12 12:37 important
/tmp # date > important

• True
• False

Answer

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