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A shell script for supervising and keeping processes alive.
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| #!/bin/sh | |
| set -e | |
| if [[ "$#" -lt 2 || ! -x "$2" ]]; then | |
| echo "Usage: supervise log_tag program [program-argument...]" >&2 | |
| exit 2 | |
| fi | |
| LOG_TAG="$1" | |
| shift | |
| set +e -o pipefail | |
| while true; do | |
| STARTED_AT="$(date +%s)" | |
| "$@" 2>&1 | logger -t "${LOG_TAG}[$(pgrep -oP "$$")]" | |
| EXIT_CODE="$?" | |
| for CODE in 0 137 143; do [[ "${CODE}" -eq "${EXIT_CODE}" ]] && exit 0; done | |
| [[ "$(($(date +%s)-${STARTED_AT}))" -gt 5 ]] && sleep 0.1 || sleep 5 | |
| done |
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