Visit Our UNIX and Linux User Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #613
Difficulty: Medium
Examples of complex numbers in Python are (-5+4j) and (2.3 - 4.6j).
True or False?
Linux & Unix Commands - Search Man Pages

captest(8) [bsd man page]

CAPTEST:(8)						  System Administration Utilities					       CAPTEST:(8)

NAME
captest - a program to demonstrate capabilities SYNOPSIS
captest [ --drop-all | --drop-caps | --id ] [ --lock ] [ --text ] DESCRIPTION
captest is a program that demonstrates and prints out the current process capabilities. Each option prints the same report. It will output current capabilities. then it will try to access /etc/shadow directly to show if that can be done. Then it creates a child process that attempts to read /etc/shadow and outputs the results of that. Then it outputs the capabilities that a child process would have. You can also apply file system capabilities to this program to study how they work. For example, filecap /usr/bin/captest chown. Then run captest as a normal user. Another interesting test is to make captest suid root so that you can see what the interaction is between root's credentials and capabilities. For example, chmod 4755 /usr/bin/captest. When run as a normal user, the program will see if privilege esca- lation is possible. But do not leave this app setuid root after you are don testing so that an attacker cannot take advantage of it. OPTIONS
--drop-all This drops all capabilities and clears the bounding set. --drop-caps This drops just traditional capabilities. --id This changes to uid and gid 99, drops supplemental groups, and clears the bounding set. --text This option outputs the effective capabilities in text rather than numerically. --lock This prevents the ability for child processes to regain privileges if the uid is 0. SEE ALSO
filecap(8), capabilities(7) AUTHOR
Steve Grubb Red Hat June 2009 CAPTEST:(8)

Check Out this Related Man Page

CAPTEST:(8)						  System Administration Utilities					       CAPTEST:(8)

NAME
captest - a program to demonstrate capabilities SYNOPSIS
captest [ --drop-all | --drop-caps | --id ] [ --lock ] [ --text ] DESCRIPTION
captest is a program that demonstrates and prints out the current process capabilities. Each option prints the same report. It will output current capabilities. then it will try to access /etc/shadow directly to show if that can be done. Then it creates a child process that attempts to read /etc/shadow and outputs the results of that. Then it outputs the capabilities that a child process would have. You can also apply file system capabilities to this program to study how they work. For example, filecap /usr/bin/captest chown. Then run captest as a normal user. Another interesting test is to make captest suid root so that you can see what the interaction is between root's credentials and capabilities. For example, chmod 4755 /usr/bin/captest. When run as a normal user, the program will see if privilege esca- lation is possible. But do not leave this app setuid root after you are don testing so that an attacker cannot take advantage of it. OPTIONS
--drop-all This drops all capabilities and clears the bounding set. --drop-caps This drops just traditional capabilities. --id This changes to uid and gid 99, drops supplemental groups, and clears the bounding set. --text This option outputs the effective capabilities in text rather than numerically. --lock This prevents the ability for child processes to regain privileges if the uid is 0. SEE ALSO
filecap(8), capabilities(7) AUTHOR
Steve Grubb Red Hat June 2009 CAPTEST:(8)

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