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I am using cent OS Operating system without GNOME.
In the starting, it asks
localhost login:
Password:
It has one user named service under group name service whose password is also service.
I want to enter in OS by this user named service.
When I do this, it shows this lines
Last Login: Mon Feb 18 16:16:26 on tty1
-bash: /home/service/.bashrc: Permission denied
-bash-3.2$
I changed in /etc/sudoers, and add service ALL=(ALL) ALL, right below root ALL=(ALL) ALL, but it didn't work.
when I try to switch from root to service, it shows the same error.
EDITED
When I run ls -a -l | grep .bashrc, it shows
lrwxrwxrwx 1 root root 41 Feb 18 11:40 .bashrc -> /home/service/etc/version.symlink/.bashrc
-rw-r--r-- 1 service service 124 Feb 15 13:06 .bashrc-moved-1361167832
Help me. Looking for your kind response.
Well, according to the output of your ls -a -l | grep .bashrc command, I guess you have to issue this command as root :
chown service:service /home/service/.bashrc
This is nothing to do with sudo. Check the permissions on /home/service/.bashrc It should be owned by service:service. It should be also readable for that user.
/home/service itself should be owned by service:service and be have rwx rights for the owner and rx for the group.
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I created a new username called user01. Then, I used usermod to grant permissions with another user.
After that, I logged out and login as user 02 but can access to /home/user01
[user02#SRV01 ~]$ cd /home/user01/
-bash: cd: /home/user01/: Permission denied
I checked the directory and permisions of /home/user01 and user by this commands:
[user02#SRV01 ~]$ ls -ltrh / | grep home
drwxr-xr-x. 10 root root 4,0K feb 19 2019 home
[user02#SRV01 ~]$ ls -ltrh /home | grep user01
drwxrwxr-x+ 17 user01 user01 4,0K nov 26 18:14 user01
root#SRV01 /home # id user02
uid=509(user02) gid=500(user01) grupos=500(user01),511(user02)
What's the exactly problem? Thank's in advance
The plus sign at the end in the listing of user01 directory implies the use of ACL. (Access Control Lists)
For more information on the permissions, use getfacl command.
That should show that the user02 has read-execute access on the directory user01.
If the appropriate setting is not there, you'll need to do that using setfacl.
For example,
setfacl -m u:user02:x user01
setfacl -m u:user02:r user01
I hope this works!
You can play around with them after reading more on man page of the getfacl/setfacl commands.
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Simple question: I have a user called "user" on my system. This user has sudo privileges. Why can't I browse into the sudoer.d directory then?
Is it because cd is a built-in command?
[user#localhost etc]$ ls -al | grep sudoers.d
drwxr-x---. 2 root root 4096 Apr 4 18:09 sudoers.d
[user#localhost etc]$ sudo cd sudoers.d
[user#localhost etc]$ pwd
/etc
[user#localhost etc]$ sudo ls -la sudoers.d/
total 12
drwxr-x---. 2 root root 4096 Apr 4 18:09 .
drwxr-xr-x. 79 root root 4096 May 5 05:20 ..
-r--r-----. 1 root root 33 Apr 4 18:09 vagrant
[user#localhost etc]$ sudo vim sudoers.d/vagrant
[user#localhost etc]$
Thanks a lot.
It happens because sudo simply executes the command executable you pass to it with elevated privileges, and forwards the rest of arguments. Since cd is a shell builtin, sudo won't find the file to execute, which results in an error.
If you wish to have an interactive shell with elevated privileges, use sudo su
sudo opens a new shell. That shell changes its working directory. And then it exits. The original shell's working directory is never changed, nor can it be.
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I have problem with Ubuntu.
I'm trying add user tbalicek to group www-data but the following commands doesn't work.
tbalicek#UBK-LINUX:/var/www$ sudo usermod -a -G www-data tbalicek
tbalicek#UBK-LINUX:/var/www$ groups
tbalicek sudo
tbalicek#UBK-LINUX:/var/www$ groups tbalicek
tbalicek : tbalicek www-data
I don't understand why groups and groups tbalicek return different results?? When I'm loged like tbalicek
When I'm trying mkdir like tbalicek in folder where si own group www-data I get: permission denied
tbalicek#UBK-LINUX:/var/www$ ls -ltr
total 20
-rwxrwxr-x 1 www-data www-data 31 Mar 27 13:52 index.php
drwxrwxr-x 9 www-data www-data 4096 Mar 27 17:16 pelnar
drwxrwxr-x 16 www-data www-data 4096 Mar 27 17:21 redmine
drwxrwxr-x 9 www-data www-data 4096 Apr 3 17:54 taskagent
-rwxrwxr-x 1 root root 22 Apr 10 14:35 info.php
tbalicek#UBK-LINUX:/var/www$
Group assignments don't take effect in the current shell. You have to log out and log back in to see the group changes.
From the Debian Wiki for sudo:
After being added to a new group the user must log out and then log back in again for the new group to take effect. Groups are only assigned to users at login time. A most common source of confusion is that people add themselves to a new group but then do not log out and back in again and then have problems because the group is not assigned.
You might get a better response for this sort of question on ServerFault.
Try the newgrp command:
ts#cmp:~$ id
uid=1001(ts) gid=1001(ts) groups=1001(ts),27(sudo)
ts#cmp:~$ newgrp www-data
ts#cmp:~$ id
uid=1001(ts) gid=33(www-data) groups=1001(ts),27(sudo),33(www-data)
Just a nitpick, 'sudo adduser user group' will also add a user to a group and I find the syntax easier to remember than using usermod.
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As per my knowledge Process ID 1 is reserved for init.
What does process id 2 indicate? why no softlink to the binary executable for this process ID.
sudo ls -l /proc/1/exe
lrwxrwxrwx 1 root root 0 Apr 24 14:53 /proc/1/exe --> /sbin/init
But for /proc/2/exe
ls : cannot read symbolic link /proc/2/exe: No such file or directory
lrwxrwxrwx 1 root root 0 Apr 24 14:53 /proc/2/exe
Im using Ubuntu 12.04.
pls share your knowledge.
It's because there is no binary to link to. This process was probably started by the kernel itself. Take a look at the out put of ps aux. Any process you see listed in brackets will not have a exe soft link either.
because at the moment you are asking there is no process of pid 2.
the kernel allocates pids at will.
Or because pid 2 is for some kernel task; on my machine it is for kthreadd which is some pure kernel process. See this answer.
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On Ubuntu 12.04, the chown command doesn't seem to be working like it should
root#server:/var/www/folder/# ls -al
Running this puts out
drwxr-xr-x 11 776 sftponly 4096 Feb 17 14:08 Other_Folder
I need write permissions for the group, so I run:
chown -R 776 ./Other_Folder
Then when I run ls -al again, the output is still
drwxr-xr-x 11 776 sftponly 4096 Feb 17 14:08 Other_Folder
chown is used to change ownership of the file, not change permissions.
ls -al is not showing you who owns the file, just its permissions.
If root owns those files, you'll need to chown them properly, before you can change their permissions:
chown -R yourname:yourname folderName
Then as the owner you can change their permissions:
chmod -R 776 folderName
Edit:
I double checked the syntax and it seems to be right, you'll likely need to use sudo to use them.