09-10-2008
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
It has been quite a while since I used UNIX. I am developing
a security system and I was wondering if UNIX and/or LINUX
user ID's are case-sensitive.
i.e. can user 'daveb' and 'Daveb' exist on the same system with
completely different authorizations/priorities, etc.? (3 Replies)
Discussion started by: dmilleville
3 Replies
2. UNIX for Dummies Questions & Answers
Hello users,
I have a question ?
I was just wondering whether the hostname on unix systems are case sensitive.
For example in the system which I work.
ping TestHost and ping testhost gives me the same output i.e I get the reply from the remote host
Is this applicable for all... (3 Replies)
Discussion started by: ajphaj
3 Replies
3. UNIX for Dummies Questions & Answers
Hi all,
Im newbie, can i disable case sensitive on RHEL environment, and how?
Thank you. (2 Replies)
Discussion started by: blesets
2 Replies
4. Shell Programming and Scripting
In a Case switch, how to ignore case sensitive in the test:
e.g.
case "$field" in
"TEST) action1;;
*) action2;;
esac
How to go in action1 in case of $field = TEST , or Test , or test or .... without enumerating all possibilities...
Thanks,... (1 Reply)
Discussion started by: annelisa
1 Replies
5. UNIX for Dummies Questions & Answers
Is there a way for me to take a parameter then store it in a variable and use its value as non case sensitive?
Ex.
Lets say i have a parameter which contains "Hey".
Then im gonna store it to GR using GR=$1.
CL=/install/$GR.g
How can i make GR non case sensitive so that the... (1 Reply)
Discussion started by: khestoi
1 Replies
6. UNIX for Advanced & Expert Users
Can someone please tell me why iname is being case sensitive with this?
$ find /media -iname *load* 2>/dev/null
/media/Part 2/stuff/Downloads
/media/Part 1/Application Data/Mozilla/Firefox/Profiles/wnul4kj4.irc/chatzilla/downloads
/media/Part 1/Bob_5-22-2010/Application... (5 Replies)
Discussion started by: cokedude
5 Replies
7. Shell Programming and Scripting
Hello all,
This is my first thread so please let me know if I am doing anything wrong or not following etiquette.
I have an input file that looks like
123a12345
345a12445
245a66792
245A12345
215A23566
and I want output files that look like
a.txt
123a12345
345a12445
245a66792
... (7 Replies)
Discussion started by: monstrousturtle
7 Replies
8. Shell Programming and Scripting
Hi All,
select app from the menu:
ABC
DEF
GHI
JKL
ALL # ALL will select all the apps in the menu
echo "Enter your option"
read option;
if
then
<execute the below command>
elif # option is the 1 selection from menu...not ALL
<execute the below command>
else (14 Replies)
Discussion started by: Devaraj A
14 Replies
9. Shell Programming and Scripting
Hi, users file contains below names i have a requirement to keep only one case sensitive user. For e.g if user name is "aaa" then only aaa should be there in the file and other matching users(AAA,aaA) should be deleted.
Tried multiple options but no luck can you please help.
aaa
abc
AAA... (2 Replies)
Discussion started by: Satyak
2 Replies
10. Shell Programming and Scripting
Hello All,
Please help me with this
I need to create a cronjob that should delete all files which are older than 30days with '*.txt' and should not delete files with '*TEST*.txt' either file name TEST is upper or test lower case sensitive
here's the script
/DIR -type f -name '*.txt'... (7 Replies)
Discussion started by: krish_007
7 Replies
LEARN ABOUT HPUX
sysv_hash_locks
sysv_hash_locks(5) File Formats Manual sysv_hash_locks(5)
NAME
sysv_hash_locks - System V IPC hashed spinlock pool size
VALUES
Failsafe
Default
Allowed values
or whichever is smaller.
Required to be a power of two.
DESCRIPTION
Note: If the DynSysVSem optional product bundle is installed then this tunable is ignored and has no effect. Each semaphore ID has a sep-
arate lock.
The tunable specifies the size of the hashed spinlock (kernel data structures used for synchronization) pool (number of available spin-
locks). The System V IPC semaphore functions acquire hashed spinlocks based on the semaphore ID. The spinlocks are hashed to avoid the
memory user needed for spinlocks but to also avoid the contention of having just one spinlock.
For more information about System V semaphores, refer to the section of the sema(5) manpage.
Who Is Expected to Change This Tunable?
Those who have identified, through kernel performance analysis, local system performance issues with these locks. HP experience is that
very few customers need to adjust this tunable.
Restrictions on Changing
Changes to this tunable take effect at the next reboot.
Note: If the DynSysVSem optional product bundle is installed then changes to this tunable are ignored and have no effect.
When Should the Value of This Tunable Be Raised?
This tunable should be raised if performance analysis shows high contention on these locks. This could happen as a result of a very large
increase to the tunable, coupled with very heavy use of semaphore operations.
When Should the Value of This Tunable Be Lowered?
If is no longer as large, and/or spinlock contention is no longer an issue.
What Other Tunable Values Should Be Changed at the Same Time?
All the System V semaphore tunables are interrelated and should not be treated as independent variables. The tunables must be evaluated as
a system to ensure they reflect the application requirements. The semaphore tunables include and Specifically, significant changes in the
number of semaphore IDs via the tunable may require changes in the tunable.
Note: If the DynSysVSem optional product bundle is installed then the and tunables are ignored and have no effect.
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its meaning changed in future releases of
HP-UX.
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or recommended values. For information about the effects of installation on tun-
able values, consult the documentation for the kernel software being installed. For information about optional kernel software that was
factory installed on your system, see at
AUTHOR
was developed by AT&T.
SEE ALSO
sema(5), semaem(5), semmni(5), semmns(5), semmnu(5), semmsl(5), semume(5), semvmx(5).
Tunable Kernel Parameters sysv_hash_locks(5)