# Overview

Script to manage custom./etc/services entries.

# Usage
Show usage

    rpearce@crom:serv$ ./serv.sh -h
    usage:  ./serv.sh [OPTIONS] command [command_args]

    Manage custom /etc/services entries.

      Valid commands are:   diff sync init add del query cat

       -f   Force removal of service even if multiple match.
       -w   Update system services file (/etc/services)
       -y   Same as -w

Create working area in ~/.serv/

    rpearce@crom:serv$ ./serv.sh  init
    Initialisation of /Users/rpearce/.serv complete.

Add a custom service

    rpearce@crom:serv$ ./serv.sh add myservice 34777/udp
    Added 'myservice' (34777/udp) to custom services file.

    NOTE: /etc/services not touched - use -w to update it.
    The following changes were NOT made:
       13921a13922,13924
       >
       > # custom services from serv.sh
       > myservice       34777/udp

Look up a custom service

    rpearce@crom:serv$ ./serv.sh query myservice
    Found in custom services file:
       myservice       34777/udp

Update system /etc/services with custom services

    rpearce@crom:serv$ ./serv.sh -w sync

    (using sudo - you may be prompted for your password)
    Password:
    /etc/services updated:
       13921a13922,13924
       >
       > # custom services from serv.sh
       > myservice       34777/udp

    rpearce@crom:serv$ tail -5 /etc/services
    #               48557-49150 Unassigned
    #               49151       IANA Reserved

    # custom services from serv.sh
    myservice       34777/udp
    rpearce@crom:serv$

Remove a custom service, and also update /etc/services

    rpearce@crom:serv$ ./serv.sh -w rm myservice
    Removed 'myservice' from custom services file (1 line).

    (using sudo - you may be prompted for your password)
    /etc/services updated:
       13924d13923
       < myservice       34777/udp

    rpearce@crom:serv$ tail -5 /etc/services
    com-bardac-dw   48556/udp    # com-bardac-dw
    com-bardac-dw   48556/tcp    # com-bardac-dw
    #                           Nicholas J Howes <nick@ghostwood.org>
    #               48557-49150 Unassigned
    #               49151       IANA Reserved
    rpearce@crom:serv$