CODEWITHSUNDEEP
ccommand-line-interface
twfx
twfx

Reputation: 1694

Command Line Interface & Process Control

Given a process which accept command line input as below

 $ ./app
 > init
 initialized.
 > start
 started.
 > stop
 stopped.

Is it possible to write a shell script or another C program which trigger ./app, and inject command sequentially? Let say the script-to-be-written will inject string "init", and wait for reply string "initialized.", then inject "start", and wait for reply "started.", and so on.

Upvotes: 1

Views: 91

Answers (1)

A.H.
A.H.

Reputation: 66263

The Unix expect tool has been created for exactly this scenario. You provide a script where you state the expected string (like initialized) and declare the appropriate action following that string. Of course there is also some kind of "START" thing.

See http://en.wikipedia.org/wiki/Expect for examples.

Upvotes: 1

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