在 Python 中运行 BASH 内置命令？
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Run BASH built-in commands in Python?
提问by duanedesign
Is there a way to run the BASH built-in commands from Python?
有没有办法从 Python 运行 BASH 内置命令？
I tried:
我试过：
subprocess.Popen(['bash','history'],shell=True, stdout=PIPE)
subprocess.Popen('history', shell=True, executable = "/bin/bash", stdout=subprocess.PIPE)
os.system('history')
and many variations thereof. I would like to run historyor fc -ln.
及其许多变体。我想跑history或fc -ln。
回答by duanedesign
I finally found a solution that works.
我终于找到了一个有效的解决方案。
from subprocess import Popen, PIPE, STDOUT
shell_command = 'bash -i -c "history -r; history"'
event = Popen(shell_command, shell=True, stdin=PIPE, stdout=PIPE,
stderr=STDOUT)
output = event.communicate()
Thank you everyone for the input.
谢谢大家的意见。
回答by lesmana
subprocess.Popen(["bash", "-c", "type type"])
this calls bash and tells bash to run the string type type, which runs the builtin command typeon the argument type.
这将调用 bash 并告诉 bash 运行字符串type type，该字符串type在参数上运行内置命令type。
output: type is a shell builtin
输出： type is a shell builtin
the part after -chas to be one string. this will not work: ["bash", "-c", "type", "type"]
后面的部分-c必须是一个字符串。这将不起作用：["bash", "-c", "type", "type"]
