Skip to content
Related Articles

Related Articles

Improve Article

grp module in Python

  • Last Updated : 02 Aug, 2019

grp module in Python provides access to the Unix group database. Each entry of Unix group database is reported as a tuple-like object whose attributes are similar as the members of group structure defined in <grp.h> header.

Following are the attributes of the tuple-like object which represents the entries stored in Unix group database:

IndexAttributesMeaning
0gr_namethe name of the group
1gr_passwdthe (encrypted) group password; often empty
2gr_gidthe numerical group ID
3gr_memall the group member’s user names

Note: grp module is UNIX specific service. So, all methods of this module is available on UNIX versions only.

grp.getgrnam() in Python defines following methods:

  • grp.getgrgid() method
  • grp.getgrnam() method
  • grp.getgrall() method



grp.getgrgid() method -

grp.getgrgid() method in Python is used to get the entry stored in the UNIX group database for the specified group id. KeyError exception is raised if the specified group id is invalid or the entry associated with it can not be found.

Syntax: grp.getgrgid(gid)

Parameter:
gid: An integer value representing the group id for which group database entry is required.

Return type: This method returns a tuple-like object of class ‘grp.struct_group’ which represents the group database entry associated with the specified group id (gid).

Code: Use of grp.getgrgid() method




# Python program to explain grp.getgrgid() method
    
# importing grp module 
import grp
  
# Group id
gid = 1000
  
# Get the group 
# database entry for the
# specified group id
# using grp.getgrgid() method
entry = grp.getgrgid(gid)
  
# Print the retrieved entry
print("Group database entry for group id % s:" % gid)
print(entry)
  
# Group id
gid = 0
  
# Get the group 
# database entry for the
# specified group id
# using grp.getgrgid() method
entry = grp.getgrgid(gid)
  
# Print the retrieved entry
print("\nGroup database entry for group id % s:" % gid)
print(entry)
Output:

Group database entry for group id 1000:
grp.struct_group(gr_name=’ihritik’, gr_passwd=’x’, gr_gid=1000, gr_mem=[])



Group database entry for group id 0:
grp.struct_group(gr_name=’root’, gr_passwd=’x’, gr_gid=0, gr_mem=[])

grp.getgrnam() method -

grp.getgrnam() method in Python is used to get the entry stored in UNIX group database for the specified group name. KeyError exception is raised if the specified group name is invalid or the entry associated with it can not be found.

Syntax: grp.getgrnam(name)

Parameter:
name: A string value representing the group name for which group database entry is required.

Return type: This method returns a tuple-like object of class ‘grp.struct_group’ which represents the group database entry associated with the specified group name.

Code: Use of grp.getgrnam() method




# Python program to explain grp.getgrnam() method
    
# importing grp module 
import grp
  
# Group name
name = "ihritik"
  
  
# Get the group 
# database entry for the
# specified group name
# using grp.getgrnam() method
entry = grp.getgrnam(name)
  
# Print the retrieved entry
print("Group database entry for the group name '%s':" %name)
print(entry)
  
  
# Group name
name = "root"
  
  
# Get the group 
# database entry for the
# specified group name
# using grp.getgrnam() method
entry = grp.getgrnam(name)
  
# Print the retrieved entry
print("\nGroup database entry for the group name '% s':" % name)
print(entry)
Output:

Group database entry for the group name ‘ihritik’:
grp.struct_group(gr_name=’ihritik’, gr_passwd=’x’, gr_gid=1000, gr_mem=[])



Group database entry for the group name ‘root’:
grp.struct_group(gr_name=’root’, gr_passwd=’x’, gr_gid=0, gr_mem=[])

grp.getgrall() method -

grp.getgrall() method in Python is used to get the all available entry stored in UNIX group database.

Syntax: grp.getgrall()

Parameter: No parameter is required.

Return type: This method returns a list of tuple-like object of class ‘grp.struct_group’ whose elements represent group database entries.

Code: Use of grp.getgrall() method




# Python program to explain grp.getgrall() method
    
# importing grp module 
import grp
  
  
# Get the all available group 
# database entries
# using grp.getgrall() method
entries = grp.getgrall()
  
# Print the retrieved entry
print("Group database entries:")
  
for row in entries:
    print(row)
Output:

Group database entries:
grp.struct_group(gr_name=’root’, gr_passwd=’x’, gr_gid=0, gr_mem=[])
grp.struct_group(gr_name=’daemon’, gr_passwd=’x’, gr_gid=1, gr_mem=[])
grp.struct_group(gr_name=’bin’, gr_passwd=’x’, gr_gid=2, gr_mem=[])
grp.struct_group(gr_name=’sys’, gr_passwd=’x’, gr_gid=3, gr_mem=[])
grp.struct_group(gr_name=’adm’, gr_passwd=’x’, gr_gid=4, gr_mem=[‘syslog’, ‘ihritik’])
grp.struct_group(gr_name=’tty’, gr_passwd=’x’, gr_gid=5, gr_mem=[])
grp.struct_group(gr_name=’disk’, gr_passwd=’x’, gr_gid=6, gr_mem=[])
grp.struct_group(gr_name=’lp’, gr_passwd=’x’, gr_gid=7, gr_mem=[])
grp.struct_group(gr_name=’mail’, gr_passwd=’x’, gr_gid=8, gr_mem=[])
grp.struct_group(gr_name=’news’, gr_passwd=’x’, gr_gid=9, gr_mem=[])
grp.struct_group(gr_name=’uucp’, gr_passwd=’x’, gr_gid=10, gr_mem=[])
grp.struct_group(gr_name=’man’, gr_passwd=’x’, gr_gid=12, gr_mem=[])
grp.struct_group(gr_name=’proxy’, gr_passwd=’x’, gr_gid=13, gr_mem=[])
grp.struct_group(gr_name=’kmem’, gr_passwd=’x’, gr_gid=15, gr_mem=[])
grp.struct_group(gr_name=’dialout’, gr_passwd=’x’, gr_gid=20, gr_mem=[])
grp.struct_group(gr_name=’fax’, gr_passwd=’x’, gr_gid=21, gr_mem=[])
grp.struct_group(gr_name=’voice’, gr_passwd=’x’, gr_gid=22, gr_mem=[])
grp.struct_group(gr_name=’cdrom’, gr_passwd=’x’, gr_gid=24, gr_mem=[‘ihritik’])
grp.struct_group(gr_name=’floppy’, gr_passwd=’x’, gr_gid=25, gr_mem=[])
grp.struct_group(gr_name=’tape’, gr_passwd=’x’, gr_gid=26, gr_mem=[])
grp.struct_group(gr_name=’sudo’, gr_passwd=’x’, gr_gid=27, gr_mem=[‘ihritik’])
grp.struct_group(gr_name=’audio’, gr_passwd=’x’, gr_gid=29, gr_mem=[‘pulse’])
grp.struct_group(gr_name=’dip’, gr_passwd=’x’, gr_gid=30, gr_mem=[‘ihritik’])
grp.struct_group(gr_name=’www-data’, gr_passwd=’x’, gr_gid=33, gr_mem=[])
grp.struct_group(gr_name=’backup’, gr_passwd=’x’, gr_gid=34, gr_mem=[])
grp.struct_group(gr_name=’operator’, gr_passwd=’x’, gr_gid=37, gr_mem=[])
grp.struct_group(gr_name=’list’, gr_passwd=’x’, gr_gid=38, gr_mem=[])
grp.struct_group(gr_name=’irc’, gr_passwd=’x’, gr_gid=39, gr_mem=[])
grp.struct_group(gr_name=’src’, gr_passwd=’x’, gr_gid=40, gr_mem=[])
grp.struct_group(gr_name=’gnats’, gr_passwd=’x’, gr_gid=41, gr_mem=[])
grp.struct_group(gr_name=’shadow’, gr_passwd=’x’, gr_gid=42, gr_mem=[])
grp.struct_group(gr_name=’utmp’, gr_passwd=’x’, gr_gid=43, gr_mem=[])
grp.struct_group(gr_name=’video’, gr_passwd=’x’, gr_gid=44, gr_mem=[])
grp.struct_group(gr_name=’sasl’, gr_passwd=’x’, gr_gid=45, gr_mem=[])
grp.struct_group(gr_name=’plugdev’, gr_passwd=’x’, gr_gid=46, gr_mem=[‘ihritik’])
grp.struct_group(gr_name=’staff’, gr_passwd=’x’, gr_gid=50, gr_mem=[])
grp.struct_group(gr_name=’games’, gr_passwd=’x’, gr_gid=60, gr_mem=[])
grp.struct_group(gr_name=’users’, gr_passwd=’x’, gr_gid=100, gr_mem=[])
grp.struct_group(gr_name=’nogroup’, gr_passwd=’x’, gr_gid=65534, gr_mem=[])
grp.struct_group(gr_name=’systemd-journal’, gr_passwd=’x’, gr_gid=101, gr_mem=[])
grp.struct_group(gr_name=’systemd-timesync’, gr_passwd=’x’, gr_gid=102, gr_mem=[])
grp.struct_group(gr_name=’systemd-network’, gr_passwd=’x’, gr_gid=103, gr_mem=[])
grp.struct_group(gr_name=’systemd-resolve’, gr_passwd=’x’, gr_gid=104, gr_mem=[])
grp.struct_group(gr_name=’systemd-bus-proxy’, gr_passwd=’x’, gr_gid=105, gr_mem=[])
grp.struct_group(gr_name=’input’, gr_passwd=’x’, gr_gid=106, gr_mem=[])
grp.struct_group(gr_name=’crontab’, gr_passwd=’x’, gr_gid=107, gr_mem=[])
grp.struct_group(gr_name=’syslog’, gr_passwd=’x’, gr_gid=108, gr_mem=[])
grp.struct_group(gr_name=’messagebus’, gr_passwd=’x’, gr_gid=109, gr_mem=[])
grp.struct_group(gr_name=’netdev’, gr_passwd=’x’, gr_gid=110, gr_mem=[])
grp.struct_group(gr_name=’mlocate’, gr_passwd=’x’, gr_gid=111, gr_mem=[])
grp.struct_group(gr_name=’ssl-cert’, gr_passwd=’x’, gr_gid=112, gr_mem=[])
grp.struct_group(gr_name=’uuidd’, gr_passwd=’x’, gr_gid=113, gr_mem=[])
grp.struct_group(gr_name=’rtkit’, gr_passwd=’x’, gr_gid=114, gr_mem=[])
grp.struct_group(gr_name=’avahi-autoipd’, gr_passwd=’x’, gr_gid=115, gr_mem=[])
grp.struct_group(gr_name=’bluetooth’, gr_passwd=’x’, gr_gid=116, gr_mem=[])
grp.struct_group(gr_name=’ssh’, gr_passwd=’x’, gr_gid=117, gr_mem=[])
grp.struct_group(gr_name=’lpadmin’, gr_passwd=’x’, gr_gid=118, gr_mem=[‘ihritik’])
grp.struct_group(gr_name=’whoopsie’, gr_passwd=’x’, gr_gid=119, gr_mem=[])
grp.struct_group(gr_name=’avahi’, gr_passwd=’x’, gr_gid=120, gr_mem=[])
grp.struct_group(gr_name=’scanner’, gr_passwd=’x’, gr_gid=121, gr_mem=[‘saned’])
grp.struct_group(gr_name=’saned’, gr_passwd=’x’, gr_gid=122, gr_mem=[])
grp.struct_group(gr_name=’pulse’, gr_passwd=’x’, gr_gid=123, gr_mem=[])
grp.struct_group(gr_name=’pulse-access’, gr_passwd=’x’, gr_gid=124, gr_mem=[])
grp.struct_group(gr_name=’colord’, gr_passwd=’x’, gr_gid=125, gr_mem=[])
grp.struct_group(gr_name=’geoclue’, gr_passwd=’x’, gr_gid=126, gr_mem=[])
grp.struct_group(gr_name=’gdm’, gr_passwd=’x’, gr_gid=127, gr_mem=[])
grp.struct_group(gr_name=’ihritik’, gr_passwd=’x’, gr_gid=1000, gr_mem=[])
grp.struct_group(gr_name=’sambashare’, gr_passwd=’x’, gr_gid=128, gr_mem=[‘ihritik’])
grp.struct_group(gr_name=’hadoop’, gr_passwd=’x’, gr_gid=1001, gr_mem=[‘master’])
grp.struct_group(gr_name=’master’, gr_passwd=’x’, gr_gid=1002, gr_mem=[])

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course




My Personal Notes arrow_drop_up
Recommended Articles
Page :