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我正在製作一個專用於啓動/停止/重新啓動獨角獸的獨角獸外殼腳本。如何讓它實際工作有點麻煩。找不到shell腳本命令
任何幫助,這是非常感謝。
當我運行shell腳本(sh unicorn_init.sh)時,我得到以下輸出。
kill: 72: No such process
unicorn_init.sh: 72: cd /data/appname/staging/releases/20120823055753; bundle exec unicorn_rails -D -c /data/appname/staging/releases/20120823055753/config/unicorn.rb -E staging: not found
這是我的shell腳本的當前版本:
#!/bin/sh
set -e
# Example init script, this can be used with nginx, too,
# since nginx and unicorn accept the same signals
# Feel free to change any of the following variables for your app:
TIMEOUT=${TIMEOUT-60}
APP_ROOT=/data/appname/staging/releases/20120823055753
SHARED_ROOT=/data/appname/staging/shared
PID=$SHARED_ROOT/pids/unicorn-staging.pid
CMD="cd $APP_ROOT; bundle exec unicorn_rails -D -c $APP_ROOT/config/unicorn.rb -E staging"
action="$1"
set -u
old_pid="$PID.oldbin"
cd $APP_ROOT || exit 1
sig() {
test -s "$PID" && kill -$1 `cat $PID`
}
oldsig() {
test -s $old_pid && kill -$1 `cat $old_pid`
}
case $action in
start)
sig 0 && echo >&2 "Already running" && exit 0
"$CMD"
;;
stop)
sig QUIT && exit 0
echo >&2 "Not running"
;;
force-stop)
sig TERM && exit 0
echo >&2 "Not running"
;;
restart|reload)
sig HUP && echo reloaded OK && exit 0
echo >&2 "Couldn't reload, starting '$CMD' instead"
"$CMD"
;;
upgrade)
if sig USR2 && sleep 2 && sig 0 && oldsig QUIT
then
n=$TIMEOUT
while test -s $old_pid && test $n -ge 0
do
printf '.' && sleep 1 && n=$(($n - 1))
done
echo
if test $n -lt 0 && test -s $old_pid
then
echo >&2 "$old_pid still exists after $TIMEOUT seconds"
exit 1
fi
exit 0
fi
echo >&2 "Couldn't upgrade, starting '$CMD' instead"
"$CMD"
;;
reopen-logs)
sig USR1
;;
*)
echo >&2 "Usage: $0 <start|stop|restart|upgrade|force-stop|reopen-logs>"
exit 1
;;
esac
通過快速瀏覽,則需要修改'sig'(1)不從'kill'顯示錯誤輸出,如果過程不存在,和(2)不死。由於'set -e',如果你試圖終止一個不再運行的進程,你的腳本將會終止。這不難解決,但編寫'set -e'則更具挑戰性。 – tripleee
刪除'「$ CMD」'附近的引號 – cdarke