在Python中运行BASH内置命令？

Question

有没有办法从Python运行BASH内置命令？

我试过了:

subprocess.Popen(['bash','history'],shell=True, stdout=PIPE)

subprocess.Popen('history', shell=True, executable = "/bin/bash", stdout=subprocess.PIPE)

os.system('history')

及其许多变化.我想跑history或fc -ln.

Answer 1

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()

谢谢大家的意见.

Answer 2

subprocess.Popen(["bash", "-c", "type type"])

这会调用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.

输出: type is a shell builtin

后面的部分-c必须是一个字符串.这不起作用:["bash", "-c", "type", "type"]