Write scripts in Python for automatic software installation and configuration

Use python to write scripts for automatic software installation and configuration updates:
Source: Internet Font: [big, medium, and small] Test Machine: 10.10.33.119; OS: RedHat linux4

Test path:/home/sonky

[Script 1]: OS .exe C * (replace pythoninterpreter) uses the exec * (serial series) command to completely replace the python interpreter. If OS .exe C * is executed, the pythoninterpreter and script are terminated after OS .exe C * () is executed. Required if you want to continue execution

Use the OS. Fork () function to start a new sub-process. [After the. py file is created, run the chmoda + u *. py command to modify the file attributes./*. py can run the script]

 

#! /Usr/bin/envpython

Importos, glob

Cmd = ['/bin/tar ',

'-X ',

'-Z ',

'-F ',

]

Tar_file_list = glob. glob ('* .tar.gz ')

For tar_file intar_file_list:

If OS. Fork ():

OS. Wait ()

Else:

OS .exe CV (CMD [0], CMD + [tar_file,])

Print "installmpich2 ..."

Configure = ['./configure', '-- prefix =/home/sonky/mpich2']

Make = ['/usr/bin/make']

Install = ['/usr/bin/make', 'install']

OS. chdir ('/home/sonky/mpich2-1.0.6 ')

I = OS. Fork ()

If I! = 0:

OS. Wait ()

N = OS. Fork ()

Interferon! = 0:

OS. Wait ()

OS .exe CV (install [0], install)

Else:

OS .exe CV (make [0], make)

Else:

OS .exe CV (configure [0], configure)

[Script 2-mpich.py]: in Linux (UNIX), you can use OS. Spawn * (), which features OS .exe C *(),

However, they can use the parameters (p_wait, p_nowait, etc.) to determine whether to continue or terminate the script. sleep3 is only used to pause the script during debugging, and you can see that the step has been completed.

#! /Usr/bin/Python

Import OS, glob

Tar = ['/bin/tar', '-xzf',]

Print "===== unzip sourcefile ====="

Tar_file_list = glob. glob ('* .tar.gz ')

For tar_file intar_file_list:

OS. spawnv (OS. p_wait, tar [0], tar + [tar_file,])

Print "===== installmpich ====="

Sleep = ['/bin/sleep', '3']

OS. spawnv (OS. p_wait, sleep [0], sleep)

Configure = ['./configure', '-- prefix =/home/sonky/mpich2']

Make = ['/usr/bin/make']

Install = ['/usr/bin/make', 'install']

OS. chdir ('/home/sonky/mpich2-1.0.6 ')

OS. spawnv (OS. p_wait, configure [0], configure)

Print "Step1: configuredone! "

OS. spawnv (OS. p_wait, sleep [0], sleep)

OS. spawnv (OS. p_wait, make [0], make)

Print "step2: makedone! "

OS. spawnv (OS. p_wait, sleep [0], sleep)

OS. spawnv (OS. p_wait, install [0], install)

Print "Step3: installdone! "

[Script 3] more complete script, adding the configuration file Function

#! /Usr/bin/Python

From OS. Path import walk, join, normpath

From OS import chdir

Import OS, time

Def install (sourcefile, dirname, installdir ):

Print "installing", sourcefile

Untarcmd = ['/bin/tar', '-x','-Z', '-F']

Workdir = dirname + '/' + sourcefile [:-7]

Configurecmd = ['./configure', '-- prefix =' + installdir]

Makecmd = ['/usr/bin/make']

Installcmd = ['/usr/bin/make', 'install']

OS. chdir (PATH)

Print "===== unzip source file ====="

OS. spawnv (OS. p_wait, untarcmd [0], untarcmd + [sourcefile])

Print "Unzip done! "

Time. Sleep (2)

Print "===== install starting ===="

OS. chdir (workdir)

OS. spawnv (OS. p_wait, configurecmd [0], configurecmd)

Print "Step1: Configure done! "

Time. Sleep (2)

OS. spawnv (OS. p_wait, makecmd [0], makecmd)

Print "step2: Make done! "

Time. Sleep (2)

OS. spawnv (OS. p_wait, installcmd [0], installcmd)

Print "Step3: Install done! "

Def scan (ARG, dirname, names ):

For sourcefile in names:

If (sourcefile [: N] = installfile) and (sourcefile [-7:] = ".tar.gz" or sourcefile [-8:] = ".tar.bz2 "):

Print sourcefile, "will be installed"

Install (sourcefile, dirname, installdir)

Print sourcefile, "has been installed"

Def configpath (export file, installdir ):

F = open (writable file, 'r + ')

F. Seek (0, 2)

F. Write ('\ n' + 'export Path =' + installdir + '/bin: $ path ')

F. Seek (0)

F. Close ()

Print 'step4: path edit one'

Def confignodes (nodefile ):

F = open (nodefile, 'r + ')

F. Seek (0, 2)

For I in range (1, 5 ):

F. Write ('\ n' + 'oscarnode' + STR (I) +'. stu') # .......... hostname

F. Seek (0)

F. Close

Print 'step5: MPI nodes configuration done'

If _ name __= = "_ main __":

Path = '/home/sonky'

Installfile = 'mpich'

N = 5

Installdir = '/home/sonky/' + installfile

Walk (path, scan, 0)

Export File = '/home/Dell/. bashrc'

Configpath (export file, installdir)

Nodefile = installdir + '/share/machines. Linux'

Confignodes (nodefile)

!!! Q: Why is there such a function similar to this in Python? What is the difference? Continue learning.