Run linux/unix command order by list of file

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November 5th, 2012, 04:03 AM

ferdi.supernova

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Run linux/unix command order by list of file

Hi,
I newbie on python.
Can we run unix/linux command order by list of file, which the file contains many name of file on some directory ?

November 5th, 2012, 06:26 AM

Schol-R-LEA

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If I am following you correctly, then the function you want is system(), which is in the os package.

Code:

import os

os.system("ls")

What this does is call out to the operating system shell and request that it run the other program, then return to the Python program when it is done.

Now, mind you, there are other ways to do this effectively. You can, for example, use the os.listdir() function, which gives the directory listing as a list of strings. From within a Python program, that one is probably the more useful, since you than can do what you want with that data.

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November 5th, 2012, 08:25 PM

ferdi.supernova

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Quote:

Originally Posted by Schol-R-LEA

If I am following you correctly, then the function you want is system(), which is in the os package.

Code:

import os

os.system("ls")

Hi, thanks for your comment..
I've made my script python like this

#!/usr/bin/env python
import subprocess

file="/home/ferdi/test_.txt"

f=open(file,'r')
for read_test in f :
data=f.readline()
test=subprocess.call("cd /home/ferdi/another;ls -l " + data,shell=True)
print test

which file contains
1.gif
2.gif
3.gif
4.gif

I want my result is like this :

-rwxrwxrwx. 1 ferdi ferdi 2985 Oct 31 02:09 1.gif
-rwxrwxrwx. 1 ferdi ferdi 2085 Oct 31 02:09 2.gif
-rwxrwxrwx. 1 ferdi ferdi 2185 Oct 31 02:09 3.gif
-rwxrwxrwx. 1 ferdi ferdi 2285 Oct 31 02:09 4.gif

Still error..

How to use this on python... ? Can you help me ?

November 6th, 2012, 02:18 AM

Schol-R-LEA

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First off, I should mention that the forum software does not retain indentation by default. In order to make your code readable, you need to put it in [code] tags, as I have here below:

Code:

#!/usr/bin/env python
import subprocess

file="/home/ferdi/test_.txt"

f=open(file,'r')
for read_test in f :
        data=f.readline()
        test=subprocess.call("cd /home/ferdi/another;ls -l " + data,shell=True)
        print test

As for changing the working directory, you might be better off using os.chdir("/home/ferdi/another"), before beginning the for: loop. You would then use subprocess.Popen() rather than subprocess.call(), and you would follow it immediately with a call to communicate().

Code:

import subprocess
import os

def listing():
    ls = subprocess.Popen("ls -l", stdout=subprocess.PIPE)
    return ls.communicate()[0]

ls = listing().decode()
print (ls)

lines = ls.split(os.linesep)

for line in lines:
    print(line)

Run linux/unix command order by list of file

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