See perlrun about the -n and -p switches:

perl -wnle "$i++;END{print $i}" in.fi

[download]

... or

perl -wnle "END{print $.}" in.fi

[download]

... or just wc -l in.fi.

In reply to Re: one liner - open file and read by Corion
in thread one liner - open file and read by baxy77bax

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