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 $xbash 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 updatebash 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
donebash 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
doneCopyright © 2021 Codeinu
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