8 ms·
Under what shell? If this works as described, then it's broke.
by nameiscubanpete 8y ago
Under what shell? If this works as described, then it's broke.
- indigodaddy 8y agoThis is bash (CentOS 6x).. will have to check exact version whilst at next available computer..
- indigodaddy 8y agoCorrection, this was done on CentOS 7.3.x (not CentOS 6 as I had incorrectly first noted), and the following versions of bash and grep: "GNU bash, version 4.2.46(1)-release (x86_64-redhat-linux-gnu)" "grep (GNU grep) 2.20" So where $data is a newline delimited list of items/patterns: grep "${data}" ..will indeed match each item/pattern individually and grep over each, eg, just as grep -f does against a file with a list of patterns. It doesn't work without the double quotes, and putting the echo in front was obvious derp in hindsight. See my comment where I replied to uraza and demonstrated this.