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I'm trying to install latest version of Hewlett-Packard's Linux Imaging and Printing software (HPLIP) for my office jet printer. In order to install latest version of HPLIP I removed the hplip-gui, hplip, hplip-cups, hplip-data, hpijs, and hpijs-ppds Debian Linux packages However, I'm getting the following error:

Debian warning: CUPSEXT could not be loaded. Please check HPLIP installation.

How do I fix this error while installing hplip-3.12.9.run under Debian Linux 6.0.5 amd64 bit?
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Red Hat / CentOS Command To Find Dell Service Tag

How do I find out my Dell server service tag using command line under RHEL / Fedora / Red Hat / CentOS / Scientific Linux operating systems?
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Linux / Unix: whoami Command Examples

whoami command

I am a new Linux and Unix system user. How do I listing my own username? How can I display my login name on Linux or Unix-like systems?
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I'm using the date +'%D_%T' to store Unix system date and time in a shell variable called $_now:

_now="$(date +'%D_%T')"
echo $_now


I'd like to replace / and : with _. I'm aware of the following sed command:

sed 's/\//_/g
> s/:/_/g' < <<"$_now"


How do I specify two pattern within the same sed command to replace | and : with _ so that I can get output as 01_20_12_16_10_42?
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How do I install nmap command under Debian or Ubuntu Linux based system for testing security of my own network?
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Linux: Find Out My Machine (Host) Name

How do I find out my server name (machine name) under Linux operating systems using command shell?
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How do I install Google Chrome browser under Linux operating systems? How do I install google-chrome-beta_current_amd64.deb or google-chrome-beta_current_x86_64.rpm file under Linux?
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