topic Re: Features available only on linux but not on hpux in Operating System - Linux

Features available only on linux but not on hpux

Jayesh shah — Fri, 28 Nov 2003 13:14:35 GMT

Hi,

I posted a query on how to set limits based on user on the thread: http://forums.itrc.hp.com/service/forums/questionanswer.do?threadId=278966

To my surprise, this feature is not available fully on hpux. But it is available on linux.

This increases my interest to find out all security and manageability features that are available only on Linux but not on hpux. I want to just compile a list .

Replies awaited ...

Regards
Jayesh

Re: Features available only on linux but not on hpux

Huc_1 — Fri, 28 Nov 2003 14:21:10 GMT

To answer that You need lots of knowledge on both HP-UX kernel/system layers and linux kernel/system layers, there are probably more able fellows in this forums your question then me, but I know a good place to look is sysctl

# sysctl -a
and man sysctl where helpful for me start peeling the kernel layers

You will also find usefull documentation/pointers in
ls -l /usr/share/doc/kernel-doc-?.?.??/kernel-docs.txt

Hope this help you get started

J-P

Re: Features available only on linux but not on hpux

Vitaly Karasik_1 — Sun, 30 Nov 2003 02:15:29 GMT

i'd like to suggest you few links with relevant linux doc:

http://www.samag.com/documents/s=8920/sam0311a/0311a.htm Linux Kernel Tuning Using System Control

http://www-106.ibm.com/developerworks/linux/library/l-adfly.html?ca=den-wud Administer Linux on the fly (Use the /proc filesystem to get a handle on your system
)

http://www.redhat.com/docs/manuals/linux/RHL-7.2-Manual/ref-guide/s1-proc-directories.html Directories in /proc

http://www.linux.hitech.by/modules.php?name=Content&pa=showpage&pid=21 Linux optimisation (sorry, Russian only)

In many cases we want to increase max file handlers per process/user limit (or others per process/user limits).

/etc/security/limits.conf file controls such limits, for example in order to change max open files limit for all users we should add

* soft/hard nofile xxxxx

line to /etc/security/limits.conf

See /usr/share/doc/pam-version/txts/README.pam_limits for more.

regards,
vitaly