Implement Command vlock
Objective
Have a command, vlock, which does the following
help page
BusyBox v1.24.1 (2016-02-19 11:20:55 SGT) multi-call binary.
Usage: vlock [-a]
Lock a virtual terminal. A password is required to unlock.
-a Lock all VTs
Done
- When the command complies with the above interface
- When it can be compiled as an applet into the slimbox binary
Demo
Show each command as an 'applet', and that it conforms to the interface:
$ slimbox vlock --help
BusyBox v1.24.1 (2016-02-19 11:20:55 SGT) multi-call binary.
Usage: vlock [-a]
...
Show that when called as a symlink, the same happens
$ ln -s slimbox vlock
$ ./vlock --help
BusyBox v1.24.1 (2016-02-19 11:20:55 SGT) multi-call binary.
Usage: vlock [-a]
...