A recent requirement is to execute the shell command on the page, the first thought is Os.system,
Copy Code code as follows:
Os.system (' Cat/proc/cpuinfo ')
But the results of a printed command on the page 0 or 1, of course, do not meet the requirements.
Try the second scenario Os.popen ()
Copy Code code as follows:
Output = Os.popen (' Cat/proc/cpuinfo ')
Print Output.read ()
A file read object is returned by Os.popen () that reads the read () action to see the output being executed. However, the return value that the program performs cannot be read)
Try a third scheme commands.getstatusoutput () a method can get to the return value and output, very useful.
Copy Code code as follows:
(status, Output) = Commands.getstatusoutput (' Cat/proc/cpuinfo ')
Print status, output
An example given in the Python Document,
Copy Code code as follows:
>>> Import Commands
>>> commands.getstatusoutput (' Ls/bin/ls ')
(0, '/bin/ls ')
>>> commands.getstatusoutput (' Cat/bin/junk ')
(256, ' Cat:/bin/junk:no such file or directory ')
>>> commands.getstatusoutput ('/bin/junk ')
(256, ' SH:/bin/junk:not found ')
>>> commands.getoutput (' Ls/bin/ls ')
'/bin/ls '
>>> commands.getstatus ('/bin/ls ')
'-rwxr-xr-x 1 root 13352 Oct 1994/bin/ls '
The results of the command execution can also be displayed on the last page based on the return value.
