I have created symbolic links to several frequently used commands, for example:
"lt" is a link to "ls -ltrgo|tail". What can I do to make these links available system-wide, or at least in the directories my coworkers are in most of the time? I have copied the link to several directories, and... (6 Replies)
Hi, I have a task to search for a file called 'Xstartup' in the whole system because there might be different versions of it which overrite eachother.
Can anyone suggest a smart command to run this search ? The machine needs to scan every single folder beginning from root.
Please help, I am... (5 Replies)
Hello,
I am new to shell scripting and I was trying to write a script that would force a system wide password change except for admins. I am having some trouble and any help that someone could give me would be greatly appreciated. I am trying to do it by using the UID as the marker for anyone... (6 Replies)
Hi all,
Is there any system wide limit on number of user threads. I only find nkthread as a tunable parameter,apart from the `per process limit`. (1 Reply)
Hi,
I need to look for a config file (ldap.conf) and pick the latest modified file.
`locate` tells me there are many ldap.conf's, some in /etc, /usr, /home, etc.
Is there some way I can sort them by last modified time via bash?
I was thinking maybe I could pipe the output of `locate` to `ls... (4 Replies)
Dear Fellows;
As being new to linux, i have tried to synamically load a custom library which overrides some system calls like conncet(), socket() etc.... for custom purposes.
It works well, if declaring the environment path LD_PRELOAD and execution of the application to be override... (0 Replies)
We need to have many of our users all send encrypted files to a single FTP server. The problem, if I understand how encryption/decryption works (which I don't), is that each user would normally have their own private and public key. The other end needs to be able to decrypt the file(s) using a... (6 Replies)
When looking for wherever a program or a filename appears in the system, a short scrip is "findinner" which another script calls with a long parameter list consisting of path names ending with ".sh" or ".menu". "findinner" looks like this:
# If not .savenn file, show name and result of grep.
#... (4 Replies)
I have downloaded and installed a library called htslib for specific bioinformatic use but not for the system (I'm using Ubuntu 18.04). Only parts of the library is needed for my exercise to parse data in a type called VCF format (basically tab-delimited file but contains many information in... (14 Replies)
Discussion started by: yifangt
14 Replies
LEARN ABOUT CENTOS
pam_umask
PAM_UMASK(8) Linux-PAM Manual PAM_UMASK(8)NAME
pam_umask - PAM module to set the file mode creation mask
SYNOPSIS
pam_umask.so [debug] [silent] [usergroups] [umask=mask]
DESCRIPTION
pam_umask is a PAM module to set the file mode creation mask of the current environment. The umask affects the default permissions assigned
to newly created files.
The PAM module tries to get the umask value from the following places in the following order:
o umask= argument
o umask= entry in the user's GECOS field
o UMASK= entry from /etc/default/login
o UMASK entry from /etc/login.defs
The GECOS field is split on comma ',' characters. The module also in addition to the umask= entry recognizes pri= entry, which sets the
nice priority value for the session, and ulimit= entry, which sets the maximum size of files the processes in the session can create.
OPTIONS
debug
Print debug information.
silent
Don't print informative messages.
usergroups
If the user is not root and the username is the same as primary group name, the umask group bits are set to be the same as owner bits
(examples: 022 -> 002, 077 -> 007).
umask=mask
Sets the calling process's file mode creation mask (umask) to mask & 0777. The value is interpreted as Octal.
MODULE TYPES PROVIDED
Only the session type is provided.
RETURN VALUES
PAM_SUCCESS
The new umask was set successfully.
PAM_SERVICE_ERR
No username was given.
PAM_USER_UNKNOWN
User not known.
EXAMPLES
Add the following line to /etc/pam.d/login to set the user specific umask at login:
session optional pam_umask.so umask=0022
SEE ALSO pam.conf(5), pam.d(5), pam(8)AUTHOR
pam_umask was written by Thorsten Kukuk <kukuk@thkukuk.de>.
Linux-PAM Manual 09/19/2013 PAM_UMASK(8)