Popen 无法处理在 shell 中运行的命令
我已经阅读了之前关于同一论点的问题，但我真的还没有弄清楚。
我正在尝试从命令行运行一个没有问题的命令：
xyz@klm:~/python-remoteWorkspace/PyLogParser/src:18:43>ush -o PPP -p PRD -n log 'pwd'
6:43PM PPP:prd:lgsprdppp:/ama/log/PRD/ppp
但是当我在 python 中执行相同操作时，我总是收到错误：
stringa = Popen(["ush -o PPP -p PRD -n log 'pwd'"], stdout=PIPE, stdin=PIPE).communicate()[0]
这里是错误。
Traceback (most recent call last): File "getStatData.py", line 134, in <module>
retrieveListOfFiles(infoToRetList) File "getStatData.py", line 120, in retrieveListOfFiles
stringa = Popen(["ush -o PPP -p PRD -n log 'pwd'"], stdout=PIPE, stdin=PIPE).communicate()[0] File "/opt/python-2.6-64/lib/python2.6/subprocess.py", line 595, in __init__
errread, errwrite) File "/opt/python-2.6-64/lib/python2.6/subprocess.py", line 1092, in _execute_child
raise child_exception OSError: [Errno 2] No such file or directory
我也尝试过不同的解决方案，
stringa = Popen(["ush", "-o", "PPP", "-p" "PRD", "-n", "log", '"pwd"'], stdout=PIPE, stdin=PIPE).communicate()[0]
但似乎没有任何效果。我也尝试过将绝对路径放入 ush 但什么也没有...... 有人可以解释一下我做错了什么吗？
预先感谢，AM。
编辑 ： 我发生了一件奇怪的事情，当我这样做时
which ush
，我得到了
ush: aliased to nocorrect /projects/aaaaaaa/local/ush/latest/ush.py
但是为什么它会起作用？？？
！！！谢谢大家的解答！！！
I have already read the previous questions posted on the same argument but I really haven't figured it out yet.
I am trying to run a command that works without issues from the command line :
xyz@klm:~/python-remoteWorkspace/PyLogParser/src:18:43>ush -o PPP -p PRD -n log 'pwd'
6:43PM PPP:prd:lgsprdppp:/ama/log/PRD/ppp
but when I do the same in python I always get errors :
stringa = Popen(["ush -o PPP -p PRD -n log 'pwd'"], stdout=PIPE, stdin=PIPE).communicate()[0]
Here the error.
Traceback (most recent call last): File "getStatData.py", line 134, in <module>
retrieveListOfFiles(infoToRetList) File "getStatData.py", line 120, in retrieveListOfFiles
stringa = Popen(["ush -o PPP -p PRD -n log 'pwd'"], stdout=PIPE, stdin=PIPE).communicate()[0] File "/opt/python-2.6-64/lib/python2.6/subprocess.py", line 595, in __init__
errread, errwrite) File "/opt/python-2.6-64/lib/python2.6/subprocess.py", line 1092, in _execute_child
raise child_exception OSError: [Errno 2] No such file or directory
I've tried also different solutions like
stringa = Popen(["ush", "-o", "PPP", "-p" "PRD", "-n", "log", '"pwd"'], stdout=PIPE, stdin=PIPE).communicate()[0]
but nothing seems to work. I have also tried to put the absolute path to ush but nothing...
Can somebody please explain me what am I doing wrong ?
Thanks in advance, AM.
EDIT :
I have a strange thing happening, when I do
which ush
I get
ush: aliased to nocorrect /projects/aaaaaaa/local/ush/latest/ush.py
But why is it working then ???
!!! Thank you all for the answers !!!
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应该是对的。 shell 命令中
'pwd'周围的额外引号使其成为单个参数，但引号实际上并未传递。由于您已经拆分了参数，因此请保留多余的引号。显然（在OP的更新中）
ush是一个shell别名。因此，它只在壳内膨胀；在其他任何地方，它都行不通。自己扩展一下：should be right. The extra quoting around
'pwd'in the shell command makes it a single argument, but the quotes aren't actually passed along. Since you're already splitting the arguments, leave the extra quotes out.Apparently (in an update from OP)
ushis a shell alias. Thus, it only expands in the shell; anywhere else, it won't work. Expand it yourself:如果您系统上的
ush是别名，则 popen 将不起作用。 popen 需要一个可执行文件作为第一个参数：绝对路径或 PATH 中某个内容的名称。If
ushon your system is an alias, popen won't work. popen requires an executable file as the first parameter: either an absolute path or the name of something that is in your PATH.