Wildcards inside quotes

Question

This will be an easy one, but in my memories, when shell scripting, using double quotes would allow expanding globbing and variables.

But in the following code:

#!/bin/sh

echo *.sh
echo "*.sh"
echo '*.sh'

echo $LANG
echo "$LANG"
echo '$LANG'

I get this result:

bob.sh redeployJboss.sh
*.sh
*.sh
en_US.utf8
en_US.utf8
$LANG

So single quoting prevent glob AND variable expansion but double quoting allows only variable expansion and no globbing?

Can I glob in any quoting pattern?

score 51 · Accepted Answer · answered Mar 13 '13 at 11:03

51

You are correct: globbing doesn't work in either single- or double-quotes. However, you can interpolate globbing with double-quoted strings:

$ echo "hello world" *.sh "goodbye world"
hello world [list of files] goodbye world

answered Mar 13 '13 at 11:03

Flup

10

Or even echo "$hello and $goodbye".* (mix variable expansions, spaces, and a glob in the same "word". – vonbrand Mar 13 '13 at 13:57
1

Globbing doesn't seem to work in this case, echo /path/to/file/*${variable}. How do I glob while appending an interpolated email? – CMCDragonkai Feb 05 '16 at 07:36
4

@CMCDragonkai echo "$FOLDER_PATH"/*.extension works fine for me, contrary to the accepted answer, I had to remove the whitespace between the " and the *. Hope it helps. – LostBalloon Mar 10 '16 at 18:50
@CMCDragonkai, @LostBalloon I use the following pattern when I want to use globs with variables that may have spaces: (cd "$FOLDER_PATH" && echo *.extension) – Steven Darnell Nov 03 '18 at 02:49

1 Answers1