different output for groups and groups USERNAME after adding a username to a group Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern) 2019 Community Moderator Election Results Why I closed the “Why is Kali so hard” questionsu user fails with “grep: /var/cpanel/users/user: Permission denied”Trouble adding existing user to existing group in ubuntuAdded user supplementary group, but 'groups(1)' not showing changeSetting default username and group for files in directoryadding list of users to multiple groupsDo root's supplementary groups behave differently than regular account ones for NFS shares?When running 'su - username', pam_group doesn't add additional groups from /etc/security/group.conf but sshd login does?Primary and secondary groupsAdding user to secondary group not showing in id -GnIn `/etc/passwd`, can different usernames for the same user ID have different group IDs?
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different output for groups and groups USERNAME after adding a username to a group
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)
2019 Community Moderator Election Results
Why I closed the “Why is Kali so hard” questionsu user fails with “grep: /var/cpanel/users/user: Permission denied”Trouble adding existing user to existing group in ubuntuAdded user supplementary group, but 'groups(1)' not showing changeSetting default username and group for files in directoryadding list of users to multiple groupsDo root's supplementary groups behave differently than regular account ones for NFS shares?When running 'su - username', pam_group doesn't add additional groups from /etc/security/group.conf but sshd login does?Primary and secondary groupsAdding user to secondary group not showing in id -GnIn `/etc/passwd`, can different usernames for the same user ID have different group IDs?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I stumble across a weird behaviour today.
After adding a user to a new group like so :
# gpasswd -a test myuser
then connecting to a new bash session, here are the result for groups and groups myuser:
myuser@mycomputer$ groups
wheel myuser
myuser@mycomputer$ groups myuser
wheel myuser test
Only if I reboot the output of groups will be the same as groups myuser, but not necessary showing the groups in the same order.
So my question is simple : why ?
command-line users group
edited Apr 13 at 1:20
Jeff Schaller♦
45.1k1164147
asked Apr 12 at 9:34
ogrogr
383
add a comment |
I stumble across a weird behaviour today.
After adding a user to a new group like so :
# gpasswd -a test myuser
then connecting to a new bash session, here are the result for groups and groups myuser:
myuser@mycomputer$ groups
wheel myuser
myuser@mycomputer$ groups myuser
wheel myuser test
Only if I reboot the output of groups will be the same as groups myuser, but not necessary showing the groups in the same order.
So my question is simple : why ?
command-line users group
edited Apr 13 at 1:20
Jeff Schaller♦
45.1k1164147
asked Apr 12 at 9:34
ogrogr
383
add a comment |
I stumble across a weird behaviour today.
After adding a user to a new group like so :
# gpasswd -a test myuser
then connecting to a new bash session, here are the result for groups and groups myuser:
myuser@mycomputer$ groups
wheel myuser
myuser@mycomputer$ groups myuser
wheel myuser test
Only if I reboot the output of groups will be the same as groups myuser, but not necessary showing the groups in the same order.
So my question is simple : why ?
command-line users group
edited Apr 13 at 1:20
Jeff Schaller♦
45.1k1164147
asked Apr 12 at 9:34
ogrogr
383
I stumble across a weird behaviour today.
After adding a user to a new group like so :
# gpasswd -a test myuser
then connecting to a new bash session, here are the result for groups and groups myuser:
myuser@mycomputer$ groups
wheel myuser
myuser@mycomputer$ groups myuser
wheel myuser test
Only if I reboot the output of groups will be the same as groups myuser, but not necessary showing the groups in the same order.
So my question is simple : why ?
command-line users group
command-line users group
edited Apr 13 at 1:20
Jeff Schaller♦
45.1k1164147
asked Apr 12 at 9:34
ogrogr
383
edited Apr 13 at 1:20
Jeff Schaller♦
45.1k1164147
asked Apr 12 at 9:34
ogrogr
383
edited Apr 13 at 1:20
Jeff Schaller♦
45.1k1164147
edited Apr 13 at 1:20
Jeff Schaller♦
45.1k1164147
edited Apr 13 at 1:20
Jeff Schaller♦
45.1k1164147
45.1k1164147
asked Apr 12 at 9:34
ogrogr
383
asked Apr 12 at 9:34
ogrogr
383
asked Apr 12 at 9:34
ogrogr
383
383
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Because changes to group membership only take effect after starting a new login shell. Starting a new non-login interactive shell session (which is what you get when you open a new terminal) is irrelevant.
So, when you run groups, that prints the groups your user is currently in. However, those were set up when your user first logged in and cannot be changed until you log in again. Therefore, groups doesn't include your new group.
On the other hand, when you run groups myuser, the system doesn't look for the groups the current user belongs to at the moment, it looks up the groups that the user myuser belongs to, which it gets by reading the settings file (/etc/group, presumably). Since your user is set up to belong to the new group in /etc/groups, this command shows that as well, even though you're not currently in that group since you haven't logged in again.
edited Apr 12 at 14:29
Toby Speight
5,62611235
answered Apr 12 at 9:46
terdon♦terdon
134k33270450
5
newgrpalso comes in handy, without logging in again ;-).
– Stephen Kitt
Apr 12 at 9:53
add a comment |
When you run
groupswithout an argument, it shows the groups list of the current process. Normally, the list is simply inherited from the parent process, but it is changed bylogin,newgrpand similar.When you run
groupswith an argument, it shows the groups that are listed (in the user databases) for the specified user. That's the group list thatloginetc. will set the next time it's run for that user.
This is why updating the user/group databases will only affect future login sessions - don't expect it to change any processes that are already running.
answered Apr 12 at 14:34
Toby SpeightToby Speight
5,62611235
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Because changes to group membership only take effect after starting a new login shell. Starting a new non-login interactive shell session (which is what you get when you open a new terminal) is irrelevant.
So, when you run groups, that prints the groups your user is currently in. However, those were set up when your user first logged in and cannot be changed until you log in again. Therefore, groups doesn't include your new group.
On the other hand, when you run groups myuser, the system doesn't look for the groups the current user belongs to at the moment, it looks up the groups that the user myuser belongs to, which it gets by reading the settings file (/etc/group, presumably). Since your user is set up to belong to the new group in /etc/groups, this command shows that as well, even though you're not currently in that group since you haven't logged in again.
edited Apr 12 at 14:29
Toby Speight
5,62611235
answered Apr 12 at 9:46
terdon♦terdon
134k33270450
5
newgrpalso comes in handy, without logging in again ;-).
– Stephen Kitt
Apr 12 at 9:53
add a comment |
Because changes to group membership only take effect after starting a new login shell. Starting a new non-login interactive shell session (which is what you get when you open a new terminal) is irrelevant.
So, when you run groups, that prints the groups your user is currently in. However, those were set up when your user first logged in and cannot be changed until you log in again. Therefore, groups doesn't include your new group.
On the other hand, when you run groups myuser, the system doesn't look for the groups the current user belongs to at the moment, it looks up the groups that the user myuser belongs to, which it gets by reading the settings file (/etc/group, presumably). Since your user is set up to belong to the new group in /etc/groups, this command shows that as well, even though you're not currently in that group since you haven't logged in again.
edited Apr 12 at 14:29
Toby Speight
5,62611235
answered Apr 12 at 9:46
terdon♦terdon
134k33270450
5
newgrpalso comes in handy, without logging in again ;-).
– Stephen Kitt
Apr 12 at 9:53
add a comment |
Because changes to group membership only take effect after starting a new login shell. Starting a new non-login interactive shell session (which is what you get when you open a new terminal) is irrelevant.
So, when you run groups, that prints the groups your user is currently in. However, those were set up when your user first logged in and cannot be changed until you log in again. Therefore, groups doesn't include your new group.
On the other hand, when you run groups myuser, the system doesn't look for the groups the current user belongs to at the moment, it looks up the groups that the user myuser belongs to, which it gets by reading the settings file (/etc/group, presumably). Since your user is set up to belong to the new group in /etc/groups, this command shows that as well, even though you're not currently in that group since you haven't logged in again.
edited Apr 12 at 14:29
Toby Speight
5,62611235
answered Apr 12 at 9:46
terdon♦terdon
134k33270450
Because changes to group membership only take effect after starting a new login shell. Starting a new non-login interactive shell session (which is what you get when you open a new terminal) is irrelevant.
So, when you run groups, that prints the groups your user is currently in. However, those were set up when your user first logged in and cannot be changed until you log in again. Therefore, groups doesn't include your new group.
On the other hand, when you run groups myuser, the system doesn't look for the groups the current user belongs to at the moment, it looks up the groups that the user myuser belongs to, which it gets by reading the settings file (/etc/group, presumably). Since your user is set up to belong to the new group in /etc/groups, this command shows that as well, even though you're not currently in that group since you haven't logged in again.
edited Apr 12 at 14:29
Toby Speight
5,62611235
answered Apr 12 at 9:46
terdon♦terdon
134k33270450
edited Apr 12 at 14:29
Toby Speight
5,62611235
edited Apr 12 at 14:29
Toby Speight
5,62611235
edited Apr 12 at 14:29
Toby Speight
5,62611235
5,62611235
answered Apr 12 at 9:46
terdon♦terdon
134k33270450
answered Apr 12 at 9:46
terdon♦terdon
134k33270450
answered Apr 12 at 9:46
terdon♦terdon
134k33270450
134k33270450
5
newgrpalso comes in handy, without logging in again ;-).
– Stephen Kitt
Apr 12 at 9:53
add a comment |
5
newgrpalso comes in handy, without logging in again ;-).
– Stephen Kitt
Apr 12 at 9:53
5
5
newgrp also comes in handy, without logging in again ;-).– Stephen Kitt
Apr 12 at 9:53
newgrp also comes in handy, without logging in again ;-).– Stephen Kitt
Apr 12 at 9:53
add a comment |
When you run
groupswithout an argument, it shows the groups list of the current process. Normally, the list is simply inherited from the parent process, but it is changed bylogin,newgrpand similar.When you run
groupswith an argument, it shows the groups that are listed (in the user databases) for the specified user. That's the group list thatloginetc. will set the next time it's run for that user.
This is why updating the user/group databases will only affect future login sessions - don't expect it to change any processes that are already running.
answered Apr 12 at 14:34
Toby SpeightToby Speight
5,62611235
add a comment |
When you run
groupswithout an argument, it shows the groups list of the current process. Normally, the list is simply inherited from the parent process, but it is changed bylogin,newgrpand similar.When you run
groupswith an argument, it shows the groups that are listed (in the user databases) for the specified user. That's the group list thatloginetc. will set the next time it's run for that user.
This is why updating the user/group databases will only affect future login sessions - don't expect it to change any processes that are already running.
answered Apr 12 at 14:34
Toby SpeightToby Speight
5,62611235
add a comment |
When you run
groupswithout an argument, it shows the groups list of the current process. Normally, the list is simply inherited from the parent process, but it is changed bylogin,newgrpand similar.When you run
groupswith an argument, it shows the groups that are listed (in the user databases) for the specified user. That's the group list thatloginetc. will set the next time it's run for that user.
This is why updating the user/group databases will only affect future login sessions - don't expect it to change any processes that are already running.
answered Apr 12 at 14:34
Toby SpeightToby Speight
5,62611235
When you run
groupswithout an argument, it shows the groups list of the current process. Normally, the list is simply inherited from the parent process, but it is changed bylogin,newgrpand similar.When you run
groupswith an argument, it shows the groups that are listed (in the user databases) for the specified user. That's the group list thatloginetc. will set the next time it's run for that user.
This is why updating the user/group databases will only affect future login sessions - don't expect it to change any processes that are already running.
answered Apr 12 at 14:34
Toby SpeightToby Speight
5,62611235
answered Apr 12 at 14:34
Toby SpeightToby Speight
5,62611235
answered Apr 12 at 14:34
Toby SpeightToby Speight
5,62611235
answered Apr 12 at 14:34
Toby SpeightToby Speight
5,62611235
5,62611235
add a comment |
add a comment |
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