Why does this program return a?
$ cd /tmp
$ touch a
$ echo '[1a1]' | while read i; do echo $i; done
a
There is probably some globbing going on. But I don't understand it at all.
Asked
Active
Viewed 21 times
0
Karel
- 1,468
-
While Why does my shell script choke on whitespace or other special characters? should answer your question, you may also want to read Why is printf better than echo?, Understanding "IFS= read -r line" and Why is using a shell loop to process text considered bad practice? – Stéphane Chazelas Nov 03 '21 at 19:00
-
(or IOW, in one line of code, you managed to combine quite a few basic (though common) mistakes) – Stéphane Chazelas Nov 03 '21 at 19:01