In Unix-like systems, the manual pages (man pages) are stored in separate sections. If two man pages have the same name but are stored in different sections, you can use the man command with the -a option to view all of the man pages with the same name: man -a [page name] For example, if … Read more

The gcutil tool is used to manage Google Compute Engine instances. To install gcutil on Ubuntu or Debian, you can use the following steps: Install the Google Cloud SDK: export CLOUD_SDK_REPO=”cloud-sdk-$(lsb_release -c -s)” echo “deb http://packages.cloud.google.com/apt $CLOUD_SDK_REPO main” | sudo tee -a /etc/apt/sources.list.d/google-cloud-sdk.list curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add – sudo apt-get update && sudo … Read more

To set up the RPM build environment on RHEL, Fedora, or CentOS, you need to install the rpm-build package and a few other required packages. Here are the steps to set up the RPM build environment: Install the required packages: sudo yum install rpm-build redhat-rpm-config rpmdevtools Create the RPM build directories: rpmdev-setuptree Copy the source … Read more

Here are the steps to install and configure SPDY SSL on Nginx on a Debian or Ubuntu Linux system: Install Nginx: sudo apt-get update sudo apt-get install nginx Obtain an SSL certificate: You can either purchase an SSL certificate from a trusted certificate authority (CA) or generate a self-signed certificate. Install the SSL certificate on … Read more

You can install the vim text editor on Ubuntu Linux using the apt-get package manager. Here are the steps to install vim: Update the package lists by running the following command in the terminal: sudo apt-get update Install vim by running the following command: sudo apt-get install vim After the installation is complete, you can … Read more

Exec-Shield is a security feature in the Linux kernel that provides protection against buffer overflow attacks. To turn on Exec-Shield on Ubuntu, you need to modify the boot command line and add the following parameter: execstack=off Here are the steps to do this: Boot into the GRUB menu by holding down the Shift key during … Read more

In Unix and Linux, you can redirect the error output (stderr) of a command to /dev/null using the following syntax: command 2> /dev/null This sends the error output of the command to the null device, effectively discarding it. Note that the standard output (stdout) will still be displayed. If you want to redirect both standard … Read more

You can use the following sed command to delete all blank spaces in a file: sed ‘s/ *//g’ filename > outputfile This command replaces all occurrences of zero or more spaces with nothing. The > outputfile redirects the output to a new file called outputfile. If you want to modify the original file in place, … Read more

Adobe Flash Player is not included in Debian 7 Wheezy by default, but you can install it manually. Here’s how: Download the latest version of the Flash Player plugin for Linux from the Adobe website: https://get.adobe.com/flashplayer/ Extract the downloaded archive and navigate to the extracted folder in the terminal. Install the package using the following … Read more

GCC (GNU Compiler Collection) is not included in Mac OS X by default, but you can install it using Xcode. Here’s how: Install Xcode: You can download Xcode from the Mac App Store or from the Apple Developer website. Open Xcode and go to “Preferences.” Go to the “Downloads” tab and select “Command Line Tools.” … Read more