Reading command line output from ongoing processes in terminal
I have used subprocess to obtain the output from command line, but it requires the process to end before you can use the data. Is there a way to get data line by line as it outputs? I need to have a process running indefinitely while python gets each new line as it is printed out.
python command-line output
asked Nov 12 '18 at 3:53
Aeolus
411315
add a comment |
I have used subprocess to obtain the output from command line, but it requires the process to end before you can use the data. Is there a way to get data line by line as it outputs? I need to have a process running indefinitely while python gets each new line as it is printed out.
python command-line output
asked Nov 12 '18 at 3:53
Aeolus
411315
1
Possible duplicate of live output from subprocess command
– ahota
Nov 12 '18 at 3:56
add a comment |
I have used subprocess to obtain the output from command line, but it requires the process to end before you can use the data. Is there a way to get data line by line as it outputs? I need to have a process running indefinitely while python gets each new line as it is printed out.
python command-line output
asked Nov 12 '18 at 3:53
Aeolus
411315
I have used subprocess to obtain the output from command line, but it requires the process to end before you can use the data. Is there a way to get data line by line as it outputs? I need to have a process running indefinitely while python gets each new line as it is printed out.
python command-line output
python command-line output
asked Nov 12 '18 at 3:53
Aeolus
411315
asked Nov 12 '18 at 3:53
Aeolus
411315
asked Nov 12 '18 at 3:53
Aeolus
411315
asked Nov 12 '18 at 3:53
Aeolus
411315
asked Nov 12 '18 at 3:53
Aeolus
411315
411315
1
Possible duplicate of live output from subprocess command
– ahota
Nov 12 '18 at 3:56
add a comment |
1
Possible duplicate of live output from subprocess command
– ahota
Nov 12 '18 at 3:56
1
1
Possible duplicate of live output from subprocess command
– ahota
Nov 12 '18 at 3:56
Possible duplicate of live output from subprocess command
– ahota
Nov 12 '18 at 3:56
add a comment |
1 Answer
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If you know the Process ID or PID, You can do subprocess.call('tail -f /proc/<pid>/fd/1')
answered Nov 12 '18 at 4:30
Piyush Singh
865
add a comment |
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1 Answer
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active
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
If you know the Process ID or PID, You can do subprocess.call('tail -f /proc/<pid>/fd/1')
answered Nov 12 '18 at 4:30
Piyush Singh
865
add a comment |
If you know the Process ID or PID, You can do subprocess.call('tail -f /proc/<pid>/fd/1')
answered Nov 12 '18 at 4:30
Piyush Singh
865
add a comment |
If you know the Process ID or PID, You can do subprocess.call('tail -f /proc/<pid>/fd/1')
answered Nov 12 '18 at 4:30
Piyush Singh
865
If you know the Process ID or PID, You can do subprocess.call('tail -f /proc/<pid>/fd/1')
answered Nov 12 '18 at 4:30
Piyush Singh
865
answered Nov 12 '18 at 4:30
Piyush Singh
865
answered Nov 12 '18 at 4:30
Piyush Singh
865
answered Nov 12 '18 at 4:30
Piyush Singh
865
865
add a comment |
add a comment |
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1
Possible duplicate of live output from subprocess command
– ahota
Nov 12 '18 at 3:56