While ... do

wikipedia:While

#!/bin/bash
while true; do
  ((my_var++))
  echo $my_var
done

while true; do tput bel; sleep 5; done

Response time:

while true; do echo "Time_total"; curl -so /dev/null -w '%{time_total}\n' test.wikieduonline.com; sleep 1;  done

Fish shell:

while CONDITION; COMMANDS; end

• cat your_file.txt | while read i; do echo "YOUR_TEXT $i"; done
• cat your_file.txt | while read i; do echo "$(date) $i"; done

• while read line

Related terms

• for
• until

See also

• for, for_each (Terraform), until ... do, while ... do
• Bash [ -c ], alias, &&, Bash history, Autocompletion, set, unset, export, .bash_aliases, .bashrc and .bash profile, PS1, echo, brace expansion, Function, shopt, trap, set -e, source, PATH, complete, disown, .hushlogin, .bashrc, builtin, eval, set, $PATH, $HOME, TZ, .profile, -e, -i, Builtin (Bash), mapfile, ~, return (Bash), for, until, declare, dirname, basename, functions.sh, Bash arithmetic expansion, shift, bash --rcfile, readonly, $1, $@, Bash versions, Backslash \
• Programming: C, Python, go, loop, while, for, if, variable, Error handling, Regex, Function, IDE, await, R (programming language), XACML, Type, Class inheritance, Methods, Scheme, Array, Deserialization, Fortran