41 lines
692 B
Bash
41 lines
692 B
Bash
#!/usr/bin/env bash
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#
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# Imitate watch from linux
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set -euo pipefail
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IFS=$'\n\t'
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DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
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############## Setup #########################
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function cleanup {
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switch_to_main_screen
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}
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for sig in EXIT INT QUIT HUP TERM; do
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trap "set +e; cleanup; exit" "$sig"
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done
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############## Program #########################
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function main {
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switch_to_alt_screen
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while true; do
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local output=$("$@")
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clear
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cat <<<"$output"
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sleep 2
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done
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}
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function switch_to_alt_screen {
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# tput smcup
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echo -e "\e[?1049h"
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clear
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}
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function switch_to_main_screen {
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# tput rmcup
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echo -e "\e[?1049l"
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}
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main "$@"
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