zfs
Install zfs file system on Ubuntu apt install -y zfs Listing ZFS file systems root@ns3048991:~# zfs list NAME USED AVAIL REFER MOUNTPOINT…
Linux
sendmail
To test mail using sendmail, use sendmail -f sender@example.com recipient@example.com From: Sender Name Subject: Test Mail This is a test message. .…
maldet
Sent maldet scan report to email To install maldet, run cd /usr/local/src wget http://www.rfxn.com/downloads/maldetect-current.tar.gz tar xvf maldetect-current.tar.gz cd maldetect-1* ./install.sh Configure Maldet…
self signed ssl
To generate self signed SSL certificate, run Or Or Add Self Signed SSL to Apache Virtual Host Let’s say your Apache virtual…
sublime
sublime shortcuts CTRL + D = select all occurrence of a word. CTRL + L = select current line. SHIFT + LEFT/RIGHT…
postfix
List emails in queue Delete ALL queued emails Delete only deferred emails Delete specific email by queue ID postfix no local interface…
Configure postfix to relay mails using SendGrid
To use postfix to send email using sendgrid, you first you need to install postfix on your server. Edit main.cf vi /etc/postfix/main.cf…
fping
fping can be used to ping multiple IP and get report. root@backup:~# fping -s -r 1 158.69.109.222 158.69.109.67 158.69.109.179 158.69.185.224 158.69.109.222 is…
DirectAdmin CustomBuild versions.txt is getting old
I got following email from DirectAdmin server. New Message: CustomBuild versions.txt is getting old on s1.serverok.in A new message or response with…
postfix no local interface found
When starting postfix it failed with following error [root@cloud1 etc]# service postfix start Redirecting to /bin/systemctl start postfix.service Job for postfix.service failed…