alias HowTo - Linux / Unix Q & A from nixCraft

Bash Bypass Alias Linux/Unix Command

last updated January 2, 2018 in BASH Shell, FreeBSD, Linux, UNIX

I defined mount bash shell alias as follows on my Linux system:
alias mount='mount | column -t'
However, I need to bash bypass alias for mounting the file system and another usage. How can I disable or bypass my bash shell aliases temporarily on a Linux, *BSD, macOS or Unix-like system?

KSH: Import File With Variables and Functions

last updated September 20, 2011 in KSH Shell

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?

Lighttpd Configure Subdomain

last updated March 18, 2011 in Lighttpd, Linux, UNIX

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?

Bash Shell Find Out If A Command Exists On UNIX / Linux System ($PATH) OR Not

last updated April 6, 2010 in BASH Shell, Linux, UNIX

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?

Postfix Forward Email To Another Email Account

last updated July 1, 2009 in CentOS, Debian / Ubuntu, EMail Servers, Fedora Linux, FreeBSD, Linux, OpenBSD, Troubleshooting, UNIX

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?

Linux / FreeBSD: Multiple IP Addresses on One Interface

last updated May 2, 2008 in FAQ

Can one Linux / BSD system respond to multiple IP address on a single Ethernet interface? I need to run multiple web sites and mod_ssl with a single server. How do I configure my box for multiple IP address?

How To Search Shell Command History

last updated March 6, 2008 in BASH Shell, Linux, UNIX

Q. How do I search old command history under bash shell? How do I display or modify previous commands?
Continue reading “How To Search Shell Command History”