Bash Timeout Loops

Internal

• bash

Overview

Pure timeout:

...
local timeout_sec=...
local t0=$(date '+%s')
local remaining=$(expr ${timeout_sec} + ${t0} - "$(date '+%s')")
while [[ ${remaining} -gt 0 ]]; do
    debug "remaining ${remaining} secs ..."
    sleep 1
    remaining=$(expr ${timeout_sec} + ${t0} - "$(date '+%s')")
done

Same thing, simpler:

  local t0
  t0=$(date '+%s')
  local timeout_secs=10
  while [[ $(expr ${timeout_secs} + ${t0} - "$(date '+%s')") -gt 0 ]]; do
    echo "."
    sleep 2
  done

Loop until a command succeeds or a timeout occurs.

x=1
test-command
while [ ! $? -eq 0 ]
do
    sleep 10
    x=$(( $x + 1 ))

    if [ $x -gt 100 ]
    then
       exit 255
    fi

    test-command
done