Python 子进程未正确执行

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我在将命令输出到正在运行的屏幕时遇到问题.

I am having problems outputting a command to a running screen.

使用以下代码:

import subprocess subprocess.call(["screen", "-S jcmp", "-X stuff", "'kick Jman100'`echo -ne '\015'`"])

返回以下内容:

Use: screen [-opts] [cmd [args]] or: screen -r [host.tty] Options: -a Force all capabilities into each window's termcap. -A -[r|R] Adapt all windows to the new display width & height. -c file Read configuration file instead of '.screenrc'. -d (-r) Detach the elsewhere running screen (and reattach here). -dmS name Start as daemon: Screen session in detached mode. -D (-r) Detach and logout remote (and reattach here). -D -RR Do whatever is needed to get a screen session. -e xy Change command characters. -f Flow control on, -fn = off, -fa = auto. -h lines Set the size of the scrollback history buffer. -i Interrupt output sooner when flow control is on. -l Login mode on (update /var/run/utmp), -ln = off. -list or -ls. Do nothing, just list our SockDir. -L Turn on output logging. -m ignore $STY variable, do create a new screen session. -O Choose optimal output rather than exact vt100 emulation. -p window Preselect the named window if it exists. -q Quiet startup. Exits with non-zero return code if unsuccessful. -r Reattach to a detached screen process. -R Reattach if possible, otherwise start a new session. -s shell Shell to execute rather than $SHELL. -S sockname Name this session <pid>.sockname instead of <pid>.<tty>.<host>. -t title Set title. (window's name). -T term Use term as $TERM for windows, rather than "screen". -U Tell screen to use UTF-8 encoding. -v Print "Screen version 4.00.03jw4 (FAU) 2-May-06". -wipe Do nothing, just clean up SockDir. -x Attach to a not detached screen. (Multi display mode). -X Execute <cmd> as a screen command in the specified session. Error: Unknown option S jcmp 1 >>> subprocess.call(["screen", "-s jcmp", "-X stuff", "'command here'`echo -ne '\015'`"]) Use: screen [-opts] [cmd [args]] or: screen -r [host.tty] Options: -a Force all capabilities into each window's termcap. -A -[r|R] Adapt all windows to the new display width & height. -c file Read configuration file instead of '.screenrc'. -d (-r) Detach the elsewhere running screen (and reattach here). -dmS name Start as daemon: Screen session in detached mode. -D (-r) Detach and logout remote (and reattach here). -D -RR Do whatever is needed to get a screen session. -e xy Change command characters. -f Flow control on, -fn = off, -fa = auto. -h lines Set the size of the scrollback history buffer. -i Interrupt output sooner when flow control is on. -l Login mode on (update /var/run/utmp), -ln = off. -list or -ls. Do nothing, just list our SockDir. -L Turn on output logging. -m ignore $STY variable, do create a new screen session. -O Choose optimal output rather than exact vt100 emulation. -p window Preselect the named window if it exists. -q Quiet startup. Exits with non-zero return code if unsuccessful. -r Reattach to a detached screen process. -R Reattach if possible, otherwise start a new session. -s shell Shell to execute rather than $SHELL. -S sockname Name this session <pid>.sockname instead of <pid>.<tty>.<host>. -t title Set title. (window's name). -T term Use term as $TERM for windows, rather than "screen". -U Tell screen to use UTF-8 encoding. -v Print "Screen version 4.00.03jw4 (FAU) 2-May-06". -wipe Do nothing, just clean up SockDir. -x Attach to a not detached screen. (Multi display mode). -X Execute <cmd> as a screen command in the specified session. Error: Unknown option S jcmp

jcmp"是之前使用 os.system() 调用启动的屏幕会话的名称

"jcmp" is the name of the screen session that was previously launched using an os.system() call

推荐答案

您收到该消息是因为您没有正确传递参数.每个参数都应该是列表中的一个单独字符串.也就是说，-S jcmp 不应该是单个参数，而是两个；-X stuff 也一样.

You're getting that message because you are not passing the arguments correctly. Each argument should be an individual string in the list. That is, -S jcmp should not be a single argument but two; same for -X stuff.

subprocess.call(["screen", "-S", "jcmp", "-X", "stuff", "'kick Jman100'`echo -ne '\015'`"])