find which lines in a file are longer than N characters

while read i; do [ ${#i} -gt 72 ] && echo "$i"; done < /path/to/file
Filter out lines of input that contain 72, or fewer, characters. This uses bash only. ${#i} is the number of characters in variable i.
Sample Output
$ ls /etc | while read i; do [ ${#i} -gt 72 ] && echo "$i"; done
-rw-r--r--.  1 root     root       4646 Mar  5 13:05 DIR_COLORS.lightbgcolor
-rw-r--r--.  1 root     root        863 Sep  2  2013 dleyna-renderer-service.conf
-rw-r--r--.  1 root     root        371 Mar  8 22:57 libguestfs-tools.conf
-rw-r--r--.  1 root     root       5122 Dec 24 06:57 makedumpfile.conf.sample

By: flatcap
2014-03-20 12:27:06

6 Alternatives + Submit Alt

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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