I've encounter a problem using `pwd` in a Perl script that happens to be in a directory managed by the automounter, amd. As I understand backticks in Perl on Linux, the commands are executed in a sh. So, if I..

/bin/sh
cd /net/mymachine/home/myuser
pwd
(output: /net/mymachine/home/myuser)
echo $PWD
(output: /net/mymachine/home/myuser)

..which is what I expect. But, if I..

perl -e 'print `pwd`'

..I get the output '/.automount/mymachine/root/home/myuser', which is the true resolved mountpoint that is managed by amd, and not what I expect. As a workaround, I have written a subroutine the detects and converts the result, but I should not have to do this. I am familiar with amd, perl, and sh but do not understand why this is happening. What's going on?

BTW, the only shell I know of that does this translation is csh.

In reply to `pwd`, sh, and the amd automounter by preston

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