goto bash code example

Example 1: bash jump to

#!/bin/bash
# include this boilerplate
function jumpto
{
    label=$1
    cmd=$(sed -n "/$label:/{:a;n;p;ba};" $0 | grep -v ':$')
    eval "$cmd"
    exit
}

start=${1:-"start"}

jumpto $start

start:
# your script goes here...
x=100
jumpto foo

mid:
x=101
echo "This is not printed!"

foo:
x=${x:-10}
echo x is $x

Example 2: bash jump to

while :
do
  clear
  echo -n 'Questions? '
  read x
  switch $x in
    a)
      echo a
      ;;
    b|c)
      echo b or c
      ;;
    q)
      break
      ;;
    *)
      echo Invalid command \"$x\"
      ;;
  esac 
done