Bash jump to

#!/bin/bash

# BAT / CMD goto function
function goto
{
    label=$1
    cmd=$(sed -n "/^:[[:blank:]][[:blank:]]*${label}/{:a;n;p;ba};" $0 | 
          grep -v ':$')
    eval "$cmd"
    exit
}

apt update

# Just for the heck of it: how to create a variable where to jump to:
start=${1:-"start"}
goto "$start"

: start
goto_msg="Starting..."
echo $goto_msg
# Just jump to the label:
goto "continue"

: skipped
goto_msg="This is skipped!"
echo $goto_msg

: continue
goto_msg="Ended..."
echo "$goto_msg"

# following doesn't jump to apt update whereas original does
goto update

Source: superuser.com

Bash jump to

#!/bin/bash

read -p 'Input something > ' one_thing

while true; do
  read -p 'Input something else > ' another_thing

  # Write some code to check if the requirements are met
  # Let's say in this case they are when the variable `thing_to_work` equals `done`

  if [[ "${thing_to_work}" == 'abcde' ]]; then
    break # Exit the loop
  else
    echo 'The requirements were not met, so the loop will start again'
  fi
done

Source: superuser.com

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