serv - a q&d daemon monitor that should have stayed in Bash

falconindy · 2010-04-09 04:33:00

I wanted an excuse to poke around with C, so I rewrote the Bash script presented here with some extra bells and whistles.

Usage:

Show status of all daemons:
  serv

Show status of a single daemon:
  serv <daemon>

Interact with a daemon's init script:
  serv <daemon> <action>

This isn't worthy of the AUR, but here's a PKGBUILD:

# Contributor: Dave Reisner <d@falconindy.com>
pkgname=serv
pkgver=20100409
pkgrel=1
pkgdesc="A daemon tool that should have stayed in Bash"
arch=('i686' 'x86_64')
url="VERSION"
license=('MIT')
depends=()
makedepends=('git')

_gitroot="git://github.com/falconindy/serv.git"
_gitname="serv"

build() {
  cd "$srcdir"
  msg "Connecting to GIT server...."

  if [ -d $_gitname ] ; then
    cd $_gitname && git pull origin
    msg "The local files are updated."
  else
    git clone $_gitroot $_gitname
  fi

  msg "GIT checkout done or server timeout"
  msg "Starting make..."

  rm -rf "$srcdir/$_gitname-build"
  git clone "$srcdir/$_gitname" "$srcdir/$_gitname-build"
  cd "$srcdir/$_gitname-build"

  make || return 1
  install -m755 serv -D ${pkgdir}/usr/bin/serv
}

MutantTurkey · 2010-05-03 13:18:10

this is really nice

it simplifys working with daemons

good work!

MutantTurkey

brisbin33 · 2010-05-03 13:26:02

a while back i got a bash function from someone on here called service, the real gem was the bash completion function that came with it. you could probably sed s/service/serv the following and use it with your tool as well:

_service_complete()
{
  local cur prev

  COMPREPLY=()
  cur=${COMP_WORDS[COMP_CWORD]}
  prev=${COMP_WORDS[COMP_CWORD-1]}

  if [ "$prev" == service ]; then
    COMPREPLY=( $(compgen -W "\
                $(  for service in /etc/rc.d/*; do
                    echo ${service##*/}
                    done )" -- $cur ) )
  else
    COMPREPLY=( $(compgen -W '\
                  start
                  stop
                  restart
                  reload' -- $cur ) )
  fi
}

complete -F _service_complete service

falconindy · 2010-05-19 01:16:45

Nifty. bash completion seems pretty straight forward. Going to have to implement this in some of my other projects...

Took your provided script and improved it somewhat:

_serv_complete() {
  local cur prev

  COMPREPLY=()
  cur=${COMP_WORDS[COMP_CWORD]}
  prev=${COMP_WORDS[COMP_CWORD-1]}

  case "$prev" in
    "serv") COMPREPLY=( $(compgen -W "\
                    $(  for service in /etc/rc.d/*; do
                        echo ${service##*/}
                        done )" -- $cur ) ) ;;

    "start"|"stop"|"restart") ;;

    *) [ -f /var/run/daemons/$prev ] &&
            COMPREPLY=( $(compgen -W '\
                          stop 
                          restart' -- $cur ) ) ||
            COMPREPLY=( $(compgen -W '\
                          start' -- $cur ) ) ;;
  esac
}

complete -F _serv_complete serv

Running daemons complete only 'stop' and 'reload', and stopped daemons complete only 'start'.

Now to port this to ZSH.

Arch Linux

#1 2010-04-09 04:33:00

serv - a q&d daemon monitor that should have stayed in Bash

#2 2010-05-03 13:18:10

Re: serv - a q&d daemon monitor that should have stayed in Bash

#3 2010-05-03 13:26:02

Re: serv - a q&d daemon monitor that should have stayed in Bash

#4 2010-05-19 01:16:45

Re: serv - a q&d daemon monitor that should have stayed in Bash

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