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file descriptor

I am using CentOS 5 on my laptop. If I open gnome-terminal by right clicking the desktop, I am getting an error that read as follows:

There was an error creating the child process for this terminal

How do I fix this problem and open a terminal by right clicking the Debian / Ubuntu / CentOS / Fedora / RHEL / Red hat Enterprise Linux 5.x desktop system?
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I'm using RHEL 6 / CentOS 6.x and install the memcached server. However, whey I try to start the server using service memcached start command, I get the following error:

Starting memcached: failed to set rlimit for open files. Try running as root or requesting smaller maxconns value. [FAILED]

How do I fix this problem?
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HowTo: Linux Mount devpts File System On /dev/pts

How do I mount the devpts file system under Linux operating systems using bash command prompt? How can I mount the devpts on /dev/pts using /etc/fstab file under Linux operating systems?
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Q. I've installed Apache 2.2 from FreeBSD 7.0 ports and when I try to start I get following warning on screen:

Performing sanity check on apache22 configuration:
Syntax OK
Starting apache22.
[Wed Sep 17 22:01:58 2008] [warn] (2)No such file or directory: Failed to enable the 'httpready' Accept Filter

How do I fix this error?
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I've Squid Proxy server with over 100 Windows workstation. I see following error message in my cache.log file:

WARNING! Your cache is running out of filedescriptors

Do I need to filter proxy server requests to avoid this problem? How do I fix this problem under CentOS / Fedora / RHEL / Debian Linux?
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Q. I’m using Red hat Enterprise Linux server. I’m getting following error in /var/log/message file:

Apr 16 16:38:02 server ntpd[22694]: sendto(10.0.77.54): Bad file descriptor
Apr 16 16:38:08 server ntpd[22694]: sendto(66.111.46.200): Bad file descriptor
Apr 16 16:38:25 server ntpd[22694]: sendto(83.133.111.7): Bad file descriptor
Apr 16 16:38:28 server ntpd[22694]: sendto(81.169.156.100): Bad file descriptor

How do I fix above errors?

A. If you are seeing Bad file descriptor errors in /var/log/messages, make sure that only one instance of ntpd is running.

Step #1: Stop ntpd

Type the following command to stop ntpd:
# /etc/init.d/ntpd stop

Step #2: kill ntpd

Type the following command to kill all instance of ntpd:
# killall ntpd

Step #3: Start ntpd

# /etc/init.d/ntpd start

Step #4: Watch log file /var/log/messages

Use tail command:
# tail -f /var/log/messages
Output:

Apr 16 16:44:35 server ntpd[17549]: Listening on interface lo, 127.0.0.1#123
Apr 16 16:44:35 server ntpd[17549]: Listening on interface eth0, 10.5.123.2#123
Apr 16 16:44:35 server ntpd[17549]: Listening on interface eth1, 71.26.1.25#123
Apr 16 16:44:35 server ntpd[17549]: kernel time sync status 0040
Apr 16 16:44:36 server ntpd[17549]: frequency initialized -58.648 PPM from /var/lib/ntp/drift
Apr 16 16:47:52 server ntpd[17549]: synchronized to LOCAL(0), stratum 10
Apr 16 16:47:52 server ntpd[17549]: kernel time sync disabled 0041
Apr 16 16:47:52 server ntpd[17549]: synchronized to 71.26.2.221, stratum 1
Apr 16 16:50:00 server ntpd[17549]: synchronized to 10.0.77.54, stratum 

Save Bash Shell Script Output To a File

How do I save my bash shell script output to a file?
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