SYSTEMD-NOTIFY

NAME
SYNOPSIS
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NAME

systemd-notify - å systemd æ¥åæå¡ç¶æçåå

SYNOPSIS

systemd-notify [OPTIONS...] [VARIABLE=VALUE...]

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systemd-notify å¯ç¨äº å¨å®æ¤è¿ç¨èæ¬ä¸å systemd æ¥åè¿ç¨ç¶æçååã å¯ç¨äºåéä»»æä¿¡æ¯ï¼ å¶ä¸æéè¦çæ¯ æ¥å"å¯å¨å·²å®æ"çæ¶æ¯ã

æ¤å·¥å·åºæ¬ä¸å°±æ¯å¯¹ sd_notify() çç®ååè£ï¼ 以便äºå¨èæ¬ä¸ä½¿ç¨ãè¯¦è§ sd_notify(3) æåã

注æï¼å¨æ¥åç¶ææ´æ°çåæ¶ï¼ è¿å¯ä»¥ä¼ éä¸ç³»åç¯å¢åéã

注æï¼ é¤éå¨è°ç¨æ¤å½ä»¤çæå¡ååä¸è®¾ç½®äº NotifyAccess=all ï¼ å¦å systemd å°ä¼æç»æ¥åç¶ææ´æ°çæ¶æ¯ã

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è½å¤è¯å«çå½ä»¤è¡é项å¦ä¸ï¼

--ready

å systemd æ¥å"å¯å¨å·²å®æ"çæ¶æ¯ã è¿çä»·äº systemd-notify READY=1 ã è¯¦è§ sd_notify(3) æåã

--pid=

å systemd æ¥å主å®æ¤è¿ç¨ç PID ã å¦æ PID åæ°è¢«çç¥ï¼ å°ä½¿ç¨è°ç¨ systemd-notify çè¿ç¨ç PID ã è¿çä»·äº systemd-notify MAINPID=$PID ã è¯¦è§ sd_notify(3) æåã

--status=

å systemd åéä¸ä¸ªä»»æå容çå符串æ¶æ¯ã è¿çä»·äº systemd-notify STATUS=... ã è¯¦è§ sd_notify(3) æåã

--booted

ç¨äºæ£æ¥ç³»ç»ç init è¿ç¨æ¯å¦ä¸º systemd ï¼ è¿å 0 表示系ç»ç init è¿ç¨æ¯ systemd ï¼è¿åéé¶è¡¨ç¤ºå¶ä»ã æ¤é项并ä¸åéä»»ä½æ¶æ¯ï¼å æ- ¤ä¸å¶ä»é项没æä»»ä½å³ç³»ã è¯¦è§ sd_booted(3) æåã å¦ä¸ç§æ£æ¥æ¹æ³æ¯ systemctl(1) ç is-system-running å½ä»¤ã è¥è¿å "offline" å表示系ç»ç init è¿ç¨ä¸æ¯ systemd

-h, --help

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--version

æ¾ç¤ºç®çççæ¬ä¿¡æ¯å¹¶éåºã

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è¿åå¼ä¸º 0 表示æåï¼ éé¶è¿åå¼è¡¨ç¤ºå¤±è´¥ä»£ç ã

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Example 1. å¯å¨éç¥ä¸ç¶ææ´æ°

ä¸ä¸ªç®åçå®æ¤è¿ç¨èæ¬ï¼å¨å建好é信管éä¹åï¼ å systemd æ¥å"å¯å¨å·²å®æ"çæ¶æ¯ãå¨è¿è¡æ¶ï¼ å systemd æ¥åæ´å¤çç¶ææ¶æ¯ï¼

#!/bin/bash

mkfifo /tmp/waldo
systemd-notify --ready --status="Waiting for data..."

while : ; do
read a < /tmp/waldo
systemd-notify --status="Processing $a"

# Do something with $a ...

systemd-notify --status="Waiting for data..."
done

åè§

systemd(1), systemctl(1), systemd.unit(5), sd_notify(3), sd_booted(3)

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æ¬é¡µé¢ä¸æçç±ä¸æ man æå页计åæä¾ã

ç¿»è¯äººåï¼éæ¥å½
éæ¥å½ä½åéï¼http://www.jinbuguo.com
ä¸æ man æå页计åï¼https://github.com/man-pages-zh/manpages-zh

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