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I would like to update tcpdump on my computer (CentOS 6.5) which is currently old. I download the zip file from TCPDUMP/LIBPCAP public repository (http://www.tcpdump.org) already but I don't know how...

The block size in my home directory is showed wrong when I use "quota" command. It shows I use 1.2 gb ( about 1200000) while the real size in my directory which I use "du" command is 96 MB

I...

I am new to the Kickstart. I have a question:


If I have a kickstart script in USB, CentOS CD and a PC without the OS, Can I install the CentOS with the Kickstart script?

If I can,
How can I...

I have a question. How to write the DHCP to assign the default-gateway to clients.

Thank you.

It's work. thank you!!

bourne shell

I have a question about the type of this variable
checkU= sudo cat /etc/passwd: grep $uname: wc -l

I write a script to check the existent of username that get from the keyboard. If there is no...

- The OS of my boss MacBook is a snow leopard 6.0 . His notebook is only one to have a problem in the company whiel another staffs that use the Windows XP and Windows 7 don't have this problem.

-I am not sure of the OS version because my boss don't have much time to let me look his MacProbook.
- main
- Wired
- Yes. It has a problem when he connect the Internet via the company network...

My boss use a MacBook and he encounter with DNS drop out and he cannot surf website for 1-2 mins. The DNS Service of my company is on UNIX server. I try to delete some unused IP of DNS Server in...

the question as this topic.

I really posted a full script.

Thank you so much!!!

It's work but it kill my process too in sometime but sometime it does as my goal. Why?
#!/bin/ksh
myps=$(ps -f|grep xterm|awk '{print $2}')
mytty=$(tty|cut -c 6-10)
hackerps=$(ps -fu...

I want to kill a process of xterm that is run by hacker with my login name.
So, I write a shell script to do my goal.
I run 2 xterm and then I run my script on a first xterm. it should kill the...

Thank you very much. Sorry for my stupid.

when I write the kourne shell script on a solaris machaine like this:

#!/bin/ksh
myps =50
echo $myps

and when I run this script with typing "myfile"
, it shows this message:

myfile[2]:...

how can I kill my processes which are run by hacker or another person who log in with my username and password

I am other user who want to execute a file that its permission is -rw-rw-r--

how do I execute that file.