Visit Our UNIX and Linux User Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #465
Difficulty: Medium
A 2017 security audit of three NTP implementations, conducted on behalf of the Linux Foundation's Core Infrastructure Initiative, suggested that both NTP was less secure than Chrony.
True or False?
Linux & Unix Commands - Search Man Pages

pam_getenv(8) [bsd man page]

PAM_GETENV(8)						User Contributed Perl Documentation					     PAM_GETENV(8)

NAME
pam_getenv - get environment variables from /etc/environment SYNOPSIS
pam_getenv [-l] [-s] env_var DESCRIPTION
This tool will print out the value of env_var from /etc/environment. It will attempt to expand environment variable references in the definition of env_var but will fail if PAM items are expanded. The -l option indicates the script should return an environment variable related to default locale information. The -s option indicates that the script should return an system default environment variable. Currently neither the -l or -s options do anything. They are included because future versions of Debian may have a separate repository for the initial environment used by init scripts and for system locale information. These options will allow this script to be a stable interface even in that environment. Debian GNU/Linux 2018-04-05 PAM_GETENV(8)

Check Out this Related Man Page

PAM_GETENV(3)						   BSD Library Functions Manual 					     PAM_GETENV(3)

NAME
pam_getenv -- retrieve the value of a PAM environment variable LIBRARY
Pluggable Authentication Module Library (libpam, -lpam) SYNOPSIS
#include <sys/types.h> #include <security/pam_appl.h> const char * pam_getenv(pam_handle_t *pamh, const char *name); DESCRIPTION
The pam_getenv function returns the value of an environment variable. Its semantics are similar to those of getenv(3), but it accesses the PAM context's environment list instead of the application's. RETURN VALUES
The pam_getenv function returns NULL on failure. SEE ALSO
getenv(3), pam(3), pam_getenvlist(3), pam_putenv(3), pam_setenv(3) pam_unsetenv(3) STANDARDS
X/Open Single Sign-On Service (XSSO) - Pluggable Authentication Modules, June 1997. AUTHORS
The pam_getenv function and this manual page were developed for the FreeBSD Project by ThinkSec AS and Network Associates Laboratories, the Security Research Division of Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 (``CBOSS''), as part of the DARPA CHATS research program. BSD
December 21, 2007 BSD

10 More Discussions You Might Find Interesting

1. OS X (Apple)

Mac OS X: Based on UNIX - Solid As a Rock

See this threads: Page Not Found - Apple Open Source - Apple (0 Replies)
Discussion started by: Neo
0 Replies

2. UNIX for Beginners Questions & Answers

Simple rules of the UNIX.COM forums:

RULES OF THE UNIX AND LINUX FORUMS For the latest version of the community rules (the official community rules page), please visit here. No flames, shouting (all caps), sarcasm, bullying, profanity or arrogant posts. No negative comments about others or impolite remarks. Be patient. No... (1 Reply)
Discussion started by: Neo
1 Replies

3. Shell Programming and Scripting

Scripts without shebang

I see lot of ad-hoc shell scripts in our servers which don't have a shebang at the beginning . Does this mean that it will run on any shell ? Is it a good practice to create scripts (even ad-hoc ones) without shebang ? (16 Replies)
Discussion started by: kraljic
16 Replies

4. Fedora

Is UNIX an open source OS ?

Hi everyone, I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX. Ok onto business, my questions are-: Was/Is UNIX ever an open source operating system ? If UNIX was... (21 Replies)
Discussion started by: sreyan32
21 Replies

5. UNIX for Beginners Questions & Answers

Memory leak with awk on MacOs

Dear all, I use awk quite a bit for data wrangling ... today I find weird behavior that I cannot wrap my head around. if I execute the following command (simplified to illustrate the behavior ... nothing to do with the real command) bash-3.2$ awk... (3 Replies)
Discussion started by: comm|getline
3 Replies

6. Shell Programming and Scripting

Mail/mailx ignores newline formatting Problem.

I have a file hello.txt which i wish to send as a email body (not attachment). cat -ev hello.txt 1$ 2$ 3$ I use the following command to send the hello.txt as the email body. mailx -s "Alert" myteam@mycomp.com<hello.txt However, the email received has this in the email body 123... (2 Replies)
Discussion started by: mohtashims
2 Replies

7. Linux

LM 19.1 from pendrive

I've "installed" LM 19.1 to a PNY 16Gb(2.0) pendrive. I have a few issues that I'd like to resolve. First and foremost, the O.S. experiences "lagging" issues and to a lesser degree, freezing. Example: Complete "boot-up" (from start to complete "home" page) can take upwards of 7 mins. Then when... (10 Replies)
Discussion started by: 69Rixter
10 Replies

8. UNIX for Beginners Questions & Answers

UNIX Environment Setup - (Just starting!)

Morning All So, I am starting looking into the world of UNIX for a new job (luckily not my primary function!) and I am looking to get stared. Like anything I seem to learn best by trying things out first in an environment but I have a key question: Currently I use Oracle VirtualBox, can... (8 Replies)
Discussion started by: GophusMeau
8 Replies

9. Solaris

Is it safe to install x86 Solaris 10 U6 after installed-Linux-and-FreeBSD?

I've installed Slack 14.2 on /dev/sda1 (/dev/sda2 is swap) and FreeBSD 12 on /dev/sda3 and lilo is the boot manager. FreeBSD slices are as follows; / on /dev/ada0S3a, swap on /dev/ada0s3e, /var on /dev/ada0s3b, /tmp on /dev/ada0s3d and /usr on /dev/ada0s3f. I hesitate to install Solaris 10... (2 Replies)
Discussion started by: vectrum
2 Replies

10. UNIX for Advanced & Expert Users

[Tip] How to display the number of logged-in users

In a professional environment with traditional application you often want (or are asked) to report the users. Traditionally there is the who command who | awk '{print $1}'telnetd or sshd register the users in the utmp file, to be shown with who, w, users, finger, pinky, ... In addition they... (1 Reply)
Discussion started by: MadeInGermany
1 Replies

Featured Tech Videos