100 lines
2.2 KiB
Bash
Executable File
100 lines
2.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# startb: start a command in the background with journald or file logging fallback.
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# Usage:
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# startb [--log logfile] COMMAND [ARGS...]
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# Environment:
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# STARTB_LOGFILE=... to force a log file.
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set -euo pipefail
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# PATH may be incomplete from systemd login env; restore from interactive shell.
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PATH=$(zsh -c -i 'echo $PATH')
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export PATH
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SCRIPT_NAME="${0##*/}"
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usage() {
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cat <<EOF
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Usage: ${SCRIPT_NAME} [--log logfile] COMMAND [ARGS...]
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--log logfile Write logs to this file instead of journald.
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Environment variable STARTB_LOGFILE can also provide a logfile path.
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EOF
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exit 1
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}
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if [ $# -lt 1 ]; then
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usage
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fi
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LOG_FILE=${STARTB_LOGFILE:-}
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if [ "$1" = "--log" ] || [ "$1" = "-l" ]; then
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shift
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if [ $# -lt 1 ]; then
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echo "Error: --log requires a logfile path." >&2
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usage
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fi
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LOG_FILE=$1
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shift
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fi
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if [ $# -lt 1 ]; then
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usage
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fi
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COMMAND=("$@")
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UNIT_BASE=$(basename "${COMMAND[0]}")
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UNIT_BASE=${UNIT_BASE:-cmd}
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UNIT_NAME="${UNIT_BASE}-$(date +%Y%m%d_%H%M%S_%N)"
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log_to_file() {
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local path=$1
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mkdir -p "$(dirname "$path")" 2>/dev/null || true
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touch "$path" || {
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echo "Failed to touch logfile: $path" >&2
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return 1
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}
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nohup setsid "${COMMAND[@]}" >>"$path" 2>&1 &
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local pid=$!
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disown "$pid" 2>/dev/null || true
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echo "$UNIT_NAME started in background (pid=$pid), logs: $path"
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return 0
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}
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log_to_journal() {
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# 不按雪叶那样写基本记录不到输出，懒得调了，直接屏蔽。
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# if command -v systemd-run >/dev/null 2>&1; then
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# systemd-run --user --scope --unit="$UNIT_NAME" -- "${COMMAND[@]}" >/dev/null 2>&1 &
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# local pid=$!
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# echo "$UNIT_NAME started in systemd scope (pid=$pid), journald logging enabled"
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# return 0
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# fi
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if command -v systemd-cat >/dev/null 2>&1; then
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nohup setsid systemd-cat -t "$UNIT_BASE" -- "${COMMAND[@]}" >/dev/null 2>&1 &
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local pid=$!
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disown "$pid" 2>/dev/null || true
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echo "$UNIT_BASE started with systemd-cat (pid=$pid), journald logging enabled"
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return 0
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fi
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return 1
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}
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if [ -n "$LOG_FILE" ]; then
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log_to_file "$LOG_FILE" || exit 1
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exit 0
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fi
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if log_to_journal; then
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exit 0
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fi
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# Fallback log path when journald is unavailable.
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LOG_FILE="/tmp/${USER:-unknown}/startb/${UNIT_NAME}.log"
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log_to_file "$LOG_FILE"
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