Is_nullglob=$( shopt -s | egrep -i '*nullglob' ) #if nullglob is set then, unset it temporarily The following worked well with me: #edit user's virtual domain but, unfortunately that's not the end of the story. So, I can't use: x='abc'īut, what can we do? As, said use a while read. The BashFAQ seems to agree with what I understand at least. When my restriction is to use it in a shell script, no variable can be used inside in place of 'abc' or 'XYZ'. Look at this code from sed -i -e 's/abc/XYZ/g' /tmp/file.txt I found this thread among others and I agree it contains the most complete answers so I'm adding mine too:
