Commandline network selection script for OS X.

listing.txt

tree ~/.network/

~/.network/
├── down.d
│   └── mynet_down.sh
└── up.d
    └── mynet_up.sh

mynet_down.sh

#!/bin/bash

echo "Route DMZ internally 195.145.166.0/27"
route add -net 66.66.66.66 192.168.1.1 255.255.255.224

mynet_up.sh

#!/bin/bash

echo "Remove Route"
route delete -net 66.66.66.66 192.168.1.1 255.255.255.224

netselect.sh

#!/bin/sh

# TODO add bash_completion for profile names, is better than error handling ?

show_help() {
  echo "-> Profile name must start with or equal pattern (case-inensitive)."
  echo "-------------------------------------------------------------------"
  scselect
  exit 1
}

error() {
  echo "ERROR: $1" >&2
  show_help
}

# -- select profile --

[ -n "$1" ] || error "No pattern given for selection!"

profiles=`scselect | tail -n +2`

current=`echo "$profiles" | grep '^ \*' | cut -f 2 | tr -d \(\)`
new=`echo "$profiles" | grep -i -o "($1)" | tr -d \(\)`

# select by start-with if there is no exact match
if [ -z "$new" ]; then
  new=`echo "$profiles" | grep -i -o "($1.*)" | tr -d \(\)`
  count=`echo "$new" | wc -l | tr -d ' '`
  [ -n "$new" ] ||  error "No profile name starting with '$1'"
  [ $count -eq 1 ] || error "Multiple profiles(#$count) start with '$1'."
fi

[ "$current" != "$new" ] || error "Profile '$1' already selected. Pick a new one."


# -- switch profile --

echo "Switching network profile: ${current} -> ${new}"

sudo -s <<EOF

  [ -f $HOME/.network/down.d/$current ] && . $HOME/.network/down.d/$current

  scselect ${new}

  [ -f $HOME/.network/up.d/$new ] && sleep 3 && . $HOME/.network/up.d/$new

EOF