Sometimes you want to find files with tabs (\t) within their content. With most greps this is a difficult task:

$ bash
$ TAB=$(printf "\t")
$ grep -Hn "$TAB" *

[download]

Using perl, there is another problem: If you want to see the line number, you usually use the special $. variable. But:

Because <> never does an explicit close, line numbers increase across ARGV files.

So you have to close ARGV manually:

$ perl -lne 'print "$ARGV:$.:$_" if /\t/ } continue { close ARGV if eo
+f } {' *

[download]

-- Frank

In reply to Searching tabs in a list of files by haoess

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