How do I import variables and functions defined in lib.ksh script to another ksh script called setup.ksh under Linux / Unix like operating systems? How do I execute commands from a file in the current KSH shell?
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alias
I‘ve main domain configured at http://example.com and I’d like to use http://support.example.com with different files. How do I add subdomain support with Lighttpd web server under UNIX or Linux operating systems?
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How do I perform dns lookup under Linux or UNIX or OS X operating systems without using 3rd party web sites for troubleshooting DNS usage?
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I want find out if a command exists on UNIX from a bash shell script. If command does not exists, then I would like to display an error message on screen. How do I find out if a command exists on Posix system or not?
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I‘ve multiple virtual domain hosted on CentOS Postfix server. How do I forward selected virtual domain email to yahoo / gmail or other email account using Postfix email server?
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I‘ve couple of shell aliases defined in ~/.bashrc file. How do I temporarily remove (disable) a shell alias and call the core command directly without using unalias command?
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