Linux - Multiple service statuses with one command

Question

I'm trying to retrieve a list of multiple service statuses in Unix. I'm using the service command: man page.

The statuses all start with the transmission-daemon string, for example.

I require the ability to list multiple services' statuses, with a single command. Here is what I'm currently trying (and failing) with:

Here I'm trying to grab a list of statuses using grep.

service $(ls /etc/init.d | grep "transmission-daemon") status

Here I'm trying to list all statuses, and then grep for them.

service --status-all | grep "transmission-daemon"

This produces the following, which isn't much help:

How can I effectively achieve what I require with a single command, so that I can then continue piping to awk for further customisation?

Desired example output:

transmission-daemon started
transmission-daemon2 stopped
transmission-daemon3 started

Answer 1

I don't have much to say except that:

• Your ls | grep thing seems really awkward and wrong to me

• To solve your grep issue, is it that service outputs to stderr? How about with a redirection of stderr to stdout?

  service --status-all 2>&1 | grep "transmission-daemon"
  

(but doing this also seems really awkward and wrong to me).

---

Apparently you want to run your services with the status command, right? How about using bash like so:

#!/bin/bash

shopt -s nullglob

for s in /etc/init.d/transmission-daemon* ; do
    service "$(basename "$s")" status
done

In one line:

bash -c 'shopt -s nullglob; for s in /etc/init.d/transmission-daemon* ; do service "$(basename "$s")" status; done'

This gives:

Hope this will put you on the right track (or at least on a better one)!

Answer 2

Another option would be to use find's -exec option:

-exec command ;
     Execute command; true if 0 status is returned.  All following arguments to
     find are taken to be arguments to the command until an argument consisting 
     of `;' is encountered.  The string '{}' is replaced by the current file 
     name being processed everywhere it occurs in the arguments to the command, 
     not just in arguments where it is alone, as in some versions of find. Both
     of these constructions might need to be escaped (with a '\') or quoted to 
     protect them from expansion by the shell.

Specifically (split for legibility):

find /etc/init.d/ -name "transmission-daemon*" \
  -exec bash -c 'service $(basename "{}") status' \;

And on one line:

find /etc/init.d/ -name "transmission-daemon*" -exec bash -c 'service $(basename "{}") status' \;

Answer 3

I found this way the easiest to remember:

for s in /etc/init.d/transmission-daemon*; do service $(basename $s) status; done