Symptoms: When i try to crontab command on my CentOS 5 server, it will return this error message: [root@server ~]# crontab -l -bash: crontab: command not found or [root@server ~]# crontab -e -bash: crontab: command not found Findings: crontab was not installed on this server. Solution : Just run yum install to install the crontab […]
Problem : Unable to read CDs or DVDs and DVD/CD-ROM drive also did not show up on My Computer. Troubleshooting: -Right Click on Device Manager -Select DVD/CD-ROM drives -Select the missing DVD/CD-ROM and should has a yellow exclamation mark -Return device status with below error: “Windows cannot load the device driver for this hardware. The […]
Question : When I issue the command yum on CentOS server / RHEL , the message below appears and I can not continue with the next installation steps : You could try using –skip-broken to work around the problem You could try running: package-cleanup –problems package-cleanup –dupes rpm -Va –nofiles –nodigest The program package-cleanup is […]
Question : I am trying to install VMware tools on CentOS and RHEL but failed and return below error: Searching for a valid kernel header path… The path “” is not valid. Would you like to change it? [yes] Answer : This is because your server have not installed required dependencies or any of the […]
There is easy way to flush the DNS resolver cache in Microsoft windows. This command will completely flush the DNS, deleting any incorrect entries. This may useful in the troubleshooting DNS name resolution problems. Steps: Open the command prompt and type the following: C:\>ipconfig /flushdns Windows IP Configuration Successfully flushed the DNS Resolver Cache.
In some scenario, you will need to upgrade the windows operating system RAM to more than 4GB. But, in normal circumstances, Windows 2000 (Datacenter Server or Advanced Server) or Windows 2003 server operating system, wont be able to use more than 4GB RAM event though more RAM modules have been installed. To enable In 32-bit […]
When you start Windows Internet Explorer 7, your home page does not open. Instead, a blank Web page is displayed. This problem typically occurs after you install Internet Explorer 7, after you install Windows, or after you reset Internet Explorer settings. This problem may occur only for certain users. To resolve this problem, create and […]