I see, but, would that be portable? I mean, the which program itself may not be available.

That's correct, it's not portable, and I don't agree with the above advice, also due to the use of backticks (see Calling External Commands More Safely). which is just a short shell script (at least on Debian), it's not magic.

In reply to Re^3: Check for another program availability by haukex
in thread Check for another program availability by hrcerq

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