chkdaemon="sendmail" ; ! pgrep $chkdaemon >/dev/null && echo "$chkdaemon not running" || echo "$chkdaemon is running"
I will be sharing more useful commands. Thank you and have fun.
chkdaemon="sendmail" ; ! pgrep $chkdaemon >/dev/null && echo "$chkdaemon not running" || echo "$chkdaemon is running"
I will be sharing more useful commands. Thank you and have fun.
This setup will help you to route all outgoing email through your ISP SMTP server using different port number and that SMTP server requires you to authenticate before relaying. For this scenario, the ISP SMTP server is Exim.
1. Edit this file /etc/postfix/main.cf and add relayhost
to point to your ISP SMTP server with port number as below: –
relayhost = mail.example.com:2525
2. Add the next parameter to allow Postfix to authenticate before relaying outgoing email as below: –
smtp_sasl_auth_enable = yes
Read More
Download the Windows Deployment sample answer files. In Notepad, open the file for your PC type, for example, Autounattend_x64_UEFI.xml. This file contains all of the settings that are needed to automate the installation process.
If you’re creating PCs for consumers, add your technical support info to the OEMInformation section, including your company name (Manufacturer) and website (SupportURL). For info, see the Licensing and Policy guidance on the OEM Partner Center. Read More
The procedure has been modified to be more comprehensible and include instructions for both Windows 7 and Windows 8.1.
In Windows 7, click on the Start Menu, enter Task Scheduler then click on it;
In Windows 8.1 press on the Win key + S (or Win key + C keys and click on Search) keys to open the Search Read More
In this article you’ll find how to generate CSR (Certificate Signing Request) using OpenSSL from the Linux command line, without being prompted for values which go in the certificate’s subject field.
In the first example, i’ll show how to create both CSR and the new private key in one command.
And in the second example, you’ll find how to generate CSR from the existing key (if you already have the private key and want to keep it).
Both examples show how to create CSR using OpenSSL non-interactively (without being prompted for subject), so you can use them in any shell scripts. Read More
Check Installed Kernels:
rpm -q kernel
Delete / Remove Old Kernels:
## Install yum utils ##
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yum install yum-utils
To check whether HAproxy is working properly, we can do the following.
First, prepare test.php file with the following content:
< ?php header('Content-Type: text/plain'); echo "Server IP: ".$_SERVER['SERVER_ADDR']; echo "\nX-Forwarded-for: ".$_SERVER['HTTP_X_FORWARDED_FOR']; ?>
In a terminal, execute the following command:
dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d' | xargs sudo apt-get -y purge
This command lists all currently installed Linux kernels, then selects all of the ones that are currently not used and removes them. Read More