我在我的在线（非本地）服务器上创建了一个 app.js，然后在终端中进行了 ssh：
$ node app.js
这使我的应用程序上线。现在我想通过上传新版本的 app.js 来更新我的代码，但我不能再修改替换它，因为它正在被节点使用（550 /public_html/foo/app.js：权限被拒绝）......怎么办我停止节点？pkill 节点不起作用，如另一个线程中所示。基本上我在安装express后启动了我的应用程序，然后当它运行时我安装了socket.io我不确定现在发生了什么。
- - -更新
[root@vps ~]# ps r
PID TTY STAT TIME COMMAND
19350 pts/0 R+ 0:00 ps r
[root@vps ~]# kill 19350 PID
-bash: kill: (19350) - No such process
-bash: kill: PID: arguments must be process or job IDs
[root@vps ~]# ps
PID TTY TIME CMD
8987 pts/0 00:00:00 bash
19505 pts/0 00:00:00 ps
[root@vps ~]# ps aux | grep node
root 19551 0.0 0.0 7216 812 pts/0 S+ 15:38 0:00 grep node
[root@vps ~]# kill -2 PID
-bash: kill: PID: arguments must be process or job IDs
[root@vps ~]# kill -0 PID
-bash: kill: PID: arguments must be process or job IDs
[root@vps ~]# kill 0 PID
-bash: kill: PID: arguments must be process or job IDs
[root@vps ~]# kill 19551 PID
-bash: kill: (19551) - No such process
-bash: kill: PID: arguments must be process or job IDs
[root@vps ~]# kill PID
-bash: kill: PID: arguments must be process or job IDs
[root@vps ~]# ps node
ERROR: Unknown user-defined format specifier "de".
********* simple selection ********* ********* selection by list *********
-A all processes -C by command name
-N negate selection -G by real group ID (supports names)
-a all w/ tty except session leaders -U by real user ID (supports names)
-d all except session leaders -g by session OR by effective group name
-e all processes -p by process ID
T all processes on this terminal -s processes in the sessions given
a all w/ tty, including other users -t by tty
g OBSOLETE -- DO NOT USE -u by effective user ID (supports names)
r only running processes U processes for specified users
x processes w/o controlling ttys t by tty
*********** output format ********** *********** long options ***********
-o,o user-defined -f full --Group --User --pid --cols --ppid
-j,j job control s signal --group --user --sid --rows --info
-O,O preloaded -o v virtual memory --cumulative --format --deselect
-l,l long u user-oriented --sort --tty --forest --version
-F extra full X registers --heading --no-heading --context
********* misc options *********
-V,V show version L list format codes f ASCII art forest
-m,m,-L,-T,H threads S children in sum -y change -l format
-M,Z security data c true command name -c scheduling class
-w,w wide output n numeric WCHAN,UID -H process hierarchy
[root@vps ~]# ps -A
PID TTY TIME CMD
1 ? 00:00:01 init
2 ? 00:00:00 kthreadd/141
3 ? 00:00:00 khelper/141
100 ? 00:00:00 udevd
477 ? 00:01:13 syslogd
488 ? 00:00:00 sshd
496 ? 00:00:00 xinetd
542 ? 00:00:00 crond
550 ? 00:00:00 saslauthd
552 ? 00:00:00 saslauthd
2348 ? 00:00:00 master
2351 ? 00:00:00 qmgr
3170 ? 00:00:00 mailmanctl
3172 ? 00:00:22 python
3173 ? 00:00:23 python
3174 ? 00:00:22 python
3175 ? 00:00:22 python
3176 ? 00:00:22 python
3177 ? 00:00:23 python
3178 ? 00:00:22 python
3179 ? 00:00:00 python
3934 ? 00:00:58 clamd.virtualmi
4209 ? 00:00:00 mysqld_safe
4291 ? 00:00:40 mysqld
4556 ? 00:00:07 perl
4618 ? 00:00:00 lookup-domain-d
5017 ? 00:00:02 proftpd
5309 ? 00:03:48 named
8985 ? 00:00:00 sshd
8987 pts/0 00:00:00 bash
12463 ? 00:00:00 httpd
12464 ? 00:00:00 httpd
12909 ? 00:00:00 httpd
14474 ? 00:00:00 httpd
15616 ? 00:00:00 pickup
16609 ? 00:00:00 crond
16612 ? 00:00:00 freshclam-sleep
16615 ? 00:00:00 sleep
19668 ? 00:00:00 proftpd
20226 ? 00:00:00 sshd
20227 ? 00:00:00 sshd
20228 pts/0 00:00:00 ps
31970 ? 00:00:04 httpd
[root@vps ~]# ps r
PID TTY STAT TIME COMMAND
20359 pts/0 R+ 0:00 ps r
[root@vps ~]# ps r -C
ERROR: List of command names must follow -C.
[root@vps ~]# ps -H
PID TTY TIME CMD
8987 pts/0 00:00:00 bash
20475 pts/0 00:00:00 ps
[root@vps ~]# kill -20475
-bash: kill: 20475: invalid signal specification
[root@vps ~]# kill 20475
-bash: kill: (20475) - No such process
[root@vps ~]# ps
PID TTY TIME CMD
8987 pts/0 00:00:00 bash
20725 pts/0 00:00:00 ps
[root@vps ~]# ps ~/
ERROR: Garbage option.
[root@vps ~]# ps
PID TTY TIME CMD
8987 pts/0 00:00:00 bash
20745 pts/0 00:00:00 ps
[root@vps ~]# kill 20745
-bash: kill: (20745) - No such process
[root@vps ~]# ps node
ERROR: Unknown user-defined format specifier "de".
[root@vps ~]# ps aux | grep node
root 20909 0.0 0.0 7216 812 pts/0 S+ 15:56 0:00 grep node
[root@vps ~]# kill poo
-bash: kill: poo: arguments must be process or job IDs
[root@vps ~]# kill -2 PID
-bash: kill: PID: arguments must be process or job IDs
[root@vps ~]# ps grep
ERROR: List of process IDs must follow p.
[root@vps ~]# kill grep node
-bash: kill: grep: arguments must be process or job IDs
-bash: kill: node: arguments must be process or job IDs
[root@vps ~]# ps grep node
ERROR: Process ID list syntax error.
[root@vps ~]# ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 10372 640 ? Ss Apr04 0:01 init [3]
root 2 0.0 0.0 0 0 ? S Apr04 0:00 [kthreadd/141]
root 3 0.0 0.0 0 0 ? S Apr04 0:00 [khelper/141]
root 100 0.0 0.0 12640 384 ? S<s Apr04 0:00 /sbin/udevd -d
root 477 0.0 0.0 5932 612 ? Ds Apr04 1:13 syslogd -m 0
root 488 0.0 0.0 62688 740 ? Ss Apr04 0:00 /usr/sbin/sshd
root 496 0.0 0.0 21664 596 ? Ss Apr04 0:00 xinetd -stayali
root 542 0.0 0.0 19728 1168 ? Ss Apr04 0:00 crond
root 550 0.0 0.0 48860 1276 ? Ss Apr04 0:00 /usr/sbin/sasla
root 552 0.0 0.0 48860 1264 ? S Apr04 0:00 /usr/sbin/sasla
root 2348 0.0 0.1 60300 2592 ? Ss Apr04 0:00 /usr/libexec/po
postfix 2351 0.0 0.1 60432 2512 ? S Apr04 0:00 qmgr -l -t fifo
mailman 3170 0.0 0.3 94488 7948 ? Ss Apr04 0:00 /usr/bin/python
mailman 3172 0.0 0.5 96664 10544 ? S Apr04 0:22 /usr/bin/python
mailman 3173 0.0 0.5 96648 10588 ? S Apr04 0:23 /usr/bin/python
mailman 3174 0.0 0.5 96672 10564 ? S Apr04 0:22 /usr/bin/python
mailman 3175 0.0 0.5 96668 10540 ? S Apr04 0:22 /usr/bin/python
mailman 3176 0.0 0.5 96620 10600 ? S Apr04 0:22 /usr/bin/python
mailman 3177 0.0 0.5 96820 10804 ? S Apr04 0:24 /usr/bin/python
mailman 3178 0.0 0.5 96668 10692 ? S Apr04 0:22 /usr/bin/python
mailman 3179 0.0 0.5 96668 10552 ? S Apr04 0:00 /usr/bin/python
nobody 3934 0.0 9.2 251908 194992 ? Ssl Apr04 0:58 clamd.virtualmi
root 4209 0.0 0.0 10784 1304 ? S Apr04 0:00 /bin/sh /usr/bi
mysql 4291 0.0 4.4 610420 93176 ? Sl Apr04 0:40 /usr/libexec/my
root 4556 0.0 2.9 132268 61100 ? Ss Apr04 0:07 /usr/bin/perl /
root 4618 0.0 2.4 83428 51644 ? Ss Apr04 0:00 /usr/libexec/we
nobody 5017 0.0 0.1 51936 2412 ? Ss Apr04 0:02 proftpd: (accep
named 5309 0.0 0.2 154864 4780 ? Ssl Apr04 3:48 /usr/sbin/named
root 8985 0.0 0.1 86084 3396 ? Ss 09:24 0:00 sshd: root@pts/
root 8987 0.0 0.0 12088 1704 pts/0 Ss 09:24 0:00 -bash
apache 12463 0.0 0.5 254352 11248 ? S 01:29 0:00 /usr/sbin/httpd
apache 12464 0.0 0.7 337608 15328 ? S 01:29 0:00 /usr/sbin/httpd
apache 12909 0.0 0.7 337596 15652 ? S 01:47 0:00 /usr/sbin/httpd
apache 14474 0.0 0.7 337592 15344 ? S 02:57 0:00 /usr/sbin/httpd
postfix 15616 0.0 0.1 60372 2540 ? S 14:19 0:00 pickup -l -t fi
root 16609 0.0 0.0 44856 1476 ? S 15:00 0:00 crond
root 16612 0.0 0.0 8688 1172 ? Ss 15:00 0:00 /bin/bash /usr/
root 16615 0.0 0.0 3812 484 ? S 15:00 0:00 sleep 9732
root 21104 0.0 0.1 84768 3220 ? Ss 15:58 0:00 sshd: unknown [
sshd 21105 0.0 0.0 64032 1564 ? S 15:58 0:00 sshd: unknown [
root 21106 0.0 0.0 10744 1008 pts/0 R+ 15:58 0:00 ps aux
root 31970 0.0 1.1 337448 23804 ? Ss Apr04 0:04 /usr/sbin/httpd
[root@vps ~]# ps aux node
ERROR: Unknown user-defined format specifier "de".
[root@vps ~]# ps aux | node
[stdin]:1
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND ^^^
SyntaxError: Unexpected identifier
at Object.<anonymous> ([stdin]-wrapper:6:22)
at Module._compile (module.js:456:26)
at evalScript (node.js:532:25)
at Socket.<anonymous> (node.js:154:11)
at Socket.EventEmitter.emit (events.js:117:20)
at _stream_readable.js:883:14
at process._tickCallback (node.js:415:13)
[root@vps ~]# ps aux | g
-bash: g: command not found
[root@vps ~]# ps aux | r
-bash: r: command not found
[root@vps ~]# ps aux | r node
-bash: r: command not found
[root@vps ~]# ps auxr
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 477 0.0 0.0 5932 612 ? Ds Apr04 1:13 syslogd -m 0
root 21529 0.0 0.0 10744 1008 pts/0 R+ 16:03 0:00 ps auxr
[root@vps ~]# ps aur
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 21755 0.0 0.0 10740 944 pts/0 R+ 16:06 0:00 ps aur
[root@vps ~]# ps G
ERROR: Unsupported option (BSD syntax)
[root@vps ~]# ps -G
ERROR: List of real groups must follow -G.
[root@vps ~]# ps -G node
ERROR: Group name does not exist.
[root@vps ~]# kill app
-bash: kill: app: arguments must be process or job IDs
[root@vps ~]# kill app.js
-bash: kill: app.js: arguments must be process or job IDs
[root@vps ~]# ps grep node
ERROR: Process ID list syntax error.
[root@vps ~]# ps | grep node
[root@vps ~]# ps a | grep node
22021 pts/0 S+ 0:00 grep node
[root@vps ~]# ps -p | grep node
ERROR: List of process IDs must follow -p.
[root@vps ~]# ps r | grep node
[root@vps ~]# ps t
PID TTY STAT TIME COMMAND
8987 pts/0 Ss 0:00 -bash
22241 pts/0 R+ 0:00 ps t
[root@vps ~]# ps t | grep node
22265 pts/0 S+ 0:00 grep node
[root@vps ~]# kill 22265
-bash: kill: (22265) - No such process
[root@vps ~]# kill ps | grep node
-bash: kill: ps: arguments must be process or job IDs
[root@vps ~]# ps l
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
4 0 8987 8985 20 0 12088 1708 wait Ss pts/0 0:00 -bash
4 0 22545 8987 20 0 8652 896 - R+ pts/0 0:00 ps l
[root@vps ~]# ps l | grep node
0 0 22589 8987 20 0 7216 808 pipe_w S+ pts/0 0:00 grep node
[root@vps ~]# kill -22545 PID
-bash: kill: 22545: invalid signal specification
[root@vps ~]# ps r | grep node
[root@vps ~]# ps -r | grep node
Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.7/FAQ
[root@vps ~]# ps l
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
4 0 8987 8985 20 0 12088 1708 wait Ss pts/0 0:00 -bash
4 0 22718 8987 20 0 8652 900 - R+ pts/0 0:00 ps l
[root@vps ~]# ps l
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
4 0 8987 8985 20 0 12088 1708 wait Ss pts/0 0:00 -bash
4 0 22743 8987 20 0 8652 900 - R+ pts/0 0:00 ps l
[root@vps ~]# kill 8987 PPID
-bash: kill: PPID: arguments must be process or job IDs
[root@vps ~]# ps pl
ERROR: Process ID list syntax error.
[root@vps ~]# ps p
ERROR: List of process IDs must follow p.
[root@vps ~]# ps f
PID TTY STAT TIME COMMAND
8987 pts/0 Ss 0:00 -bash
22935 pts/0 R+ 0:00 \_ ps f
[root@vps ~]# ps j
PPID PID PGID SID TTY TPGID STAT UID TIME COMMAND
8985 8987 8987 8987 pts/0 23076 Ss 0 0:00 -bash
8987 23076 23076 8987 pts/0 23076 R+ 0 0:00 ps j
[root@vps ~]#
我不明白 PID 似乎每次都在变化