Write Os.System Output In File Using Python
Python is a high-level programming language. There are many modules. However, we will use os.system module in this Program. This module provides a portable way of using operating system-dependent functionality. The βosβ and βos.path()β modules include many functions to interact with the file system. In this article, we will explore different methods to write os.system output in a file using Python.
Write os.system Output in File Using Python
Below, are some of the approaches to write os.system Output In File Using Python
- Using os.system() with > operator
- Using os.system() with >> operator to append output
- Using os.system() with 1> operator for stdout
- Using os.system() with 2> operator for stderr
Write os.system Output In File Using os.system() with > operator
The below Python code uses os.system() to execute the βdirβ command, redirecting its output to a file named βoutput.txtβ using the β>β operator, and prints either βSuccessfully executedβ or βFailedβ based on the exit code (0 for success).
Python3
import os # specifying the command command = "dir" # specifying output file name output_file = "output.txt" # using os.system to run the command and redirect the output to a file execute = os.system(f "{command} > {output_file}" ) if execute = = 0 : print ( "Successfully executed" ) else : print ( "Failed" ) |
Output:
Successfully executed
Write os.system Output In File Using os.system() with >> operator
The below Python code uses os.system() to execute the βecho helloβ command, appending its output to a file named βoutput.txtβ using the β>>β operator. The code then prints either βFile successfully createdβ or βFailed is not createdβ based on the exit code (0 for success).
Python3
import os # specifying the command you want to run command = "echo hello" # specifying the file where you want to store the output output_file = "output.txt" # using os.system to run the command and redirect the output to a file execute = os.system(f "{command} >> {output_file}" ) if not (execute): print ( "File successfully created " ) else : print ( "Failed is not created" ) |
Output:
File successfully created
Write os.system Output In File Using os.system() with 1> operator for stdout
The below Python code uses os.system() to execute the βechoβ command, redirecting its standard output (stdout) to a file named βoutput.txtβ using the β1>β operator. The code prints a success message or an error message based on the execution result.
Python3
import os #specifing command command = 'echo "Hello, World!" 1> output.txt' try : os.system(command) print ( "Command executed successfully. Stdout redirected to output.txt" ) except Exception as e: print (f "An error occurred: {e}" ) |
Output:
Command executed successfully. Stdout redirected to output.txt
Using os.system() with 2> operator for stderr
The below Python code uses os.system() to execute the βdelβ command, attempting to delete a file named βoutput1.txtβ, and redirects any error output (stderr) to a file named βerror.txtβ using the β2>β operator. It then displays the content of βerror.txtβ using the βtypeβ command on Windows, providing information about any errors encountered during the execution.
Python3
import os command = 'del output1.txt 2> error.txt' try : # command using os.system() os.system(command) # display the error output using 'type' command os.system( 'type error.txt' ) except Exception as e: print (f "An error occurred: {e}" ) |
Output:
Could Not Find D:\File_Location\output1.txt
Conclusion
In conclusion, we can execute system command in Python and redirecting the output to a file can be achieved using either βos.systemβ. Python os module makes it easy to work with system operations, offering options for both quick tasks and more intericate process. We can use various commands with Python βos.system()β method. In this post, we use all most all techniques how to use this commands with os.system() command.
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