import stat, sys, os, string, commands

#Getting search pattern from user and assigning it to a list

try:
#run a 'find' command and assign results to a variable
pattern = raw_input("Enter the file pattern to search for:\n")
commandString = "find " + patterncommandOutput = commands.getoutput(commandString)
findResults = string.split(commandOutput, "\n")

#output find results, along with permissions
print "Files:"
print commandOutput
print "================================"
for file in findResults:
mode=stat.S_IMODE(os.lstat(file)[stat.ST_MODE])
print "\nPermissions for file ", file, ":"
for level in "USR", "GRP", "OTH":
for perm in "R", "W", "X":
if mode %amp; getattr(stat,"S_I"+perm+level):
print level, " has ", perm, " permission"
else:
print level, " does NOT have ", perm, " permission"
except:
print "There was a problem - check the message above"

$ python example1.py
Enter the file pattern to search for:
j*.py

FILES FOUND FOR PATTERN j*.py :
jim.py
jim2.py
================================

Permissions for file jim.py :
USR R
USR W
USR X
GRP -
GRP -
GRP -
OTH -
OTH -
OTH -

Permissions for file jim2.py :
USR R
USR W
USR X
GRP R
GRP -
GRP X
OTH R
OTH -
OTH X

import tarfile, sys

try:
#open tarfile
tar = tarfile.open(sys.argv[1], "r:tar")

#present menu and get selection
selection = raw_input("Enter\n\
1 to extract a file\n\
2 to display information on a file in the archive\n\
3 to list all the files in the archive\n\n")

#perform actions based on selection above
if selection == "1":
filename = raw_input("enter the filename to extract: ")
tar.extract(filename)
elif selection == "2":
filename = raw_input("enter the filename to inspect: ")
for tarinfo in tar:
if tarinfo.name == filename:
print "\n\
Filename:\t\t", tarinfo.name, "\n\
Size:\t\t", tarinfo.size, "bytes\n\
elif selection == "3":
print tar.list(verbose=True)
except:
print "There was a problem running the program"

$ python example2.py jimstar.tar
Enter
1 to extract a file
2 to display information on a file in the archive
3 to list all the files in the archive

import commands, os, string

program = raw_input("Enter the name of the program to check: ")

try:
#perform a ps command and assign results to a list
output = commands.getoutput("ps -f|grep " + program)
proginfo = string.split(output)

#display results
print "\n\
Full path:\t\t", proginfo[5], "\n\
Owner:\t\t\t", proginfo[0], "\n\
Process ID:\t\t", proginfo[1], "\n\
Parent process ID:\t", proginfo[2], "\n\
Time started:\t\t", proginfo[4]
except:
print "There was a problem with the program."

$ python example3.py
Enter the name of the program to check: xterm

Full path: /usr/bin/xterm
Owner: knowltoj
Process ID: 3220
Parent process ID: 4308
Time started: 16:51:46

import pwd

#initialize counters
erroruser = []
errorpass = []

#get password database
passwd_db = pwd.getpwall()

try:
#check each user and password for validity
for entry in passwd_db:
username = entry[0]
password = entry [1]
if len(username) < 6:
erroruser.append(username)
if len(password) < 8:
errorpass.append(username)

#print results to screen
print "The following users have an invalid userid (less than six characters):"
for item in erroruser:
print item
print "\nThe following users have invalid password(less than eight characters):"
for item in errorpass:
print item
except:
print "There was a problem running the script."

$ python example4.py
The following users have an invalid userid (less than six characters):
Guest

The following users have invalid password(less than eight characters):
Guest
johnsmith
joewilson
suejones