More often than not for any service, I end up doing :
systemctl enable <service> systemctl start <service>
But there is shorcut to this. In systemctl command when you enable the service, you can use “–now” to start the service as follows:
systemctl enable --now <service>
quite a timesaver 🙂
Linux is powerful, flexible, and can be adapted to a broad range of uses. While best practices for administrating Linux servers are not hard to find due the popularity of the operating system, there is always a need for up-to-date Linux advice, along with the best tips, from our experienced Toptal Linux administrators.
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Have you ever typed a command in your terminal, only to find out you forgot to prefix it with the
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command? You have to retype the whole command again just to add the
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in front of it. Frustrating!
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Well, you can add this simple alias to your
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.bashrc
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to help you reduce the frustration:
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How many times you have felt that there was some simple way to convert bash ansi escape sequences ( colors as well in terminal ) to html equivalent so that you can send the same as html report in email. Here is simple solution. One way is to use ccze if you are using this for logs – colorize your logs and for more generic solution.
dnf install python3-ansi2html.noarch
after this is installed, you can use something like this:
Continue readingIf you are using pmap or using strace and want to covert kernel address to function name then you can use the following technique.
First you need to install elfutils, if not installed.
dnf install elfutils
and after this you can use the following command
eu-addr2line -f -e /boot/vmlinuz-$(uname -r) <addr> #Example eu-addr2line -f -e /boot/vmlinuz-$(uname -r) 00007f36a8045000
With the advent of tools like Docker, Linux Containers, and others, it has become super easy to isolate Linux processes into their own little system environments. This makes it possible to run a whole range of applications on a single real Linux machine and ensure no two of them can interfere with each other, without having to resort to using virtual machines. These tools have been a huge boon to PaaS providers. But what exactly happens under the hood?
Continue readingVery quick hack to fix the font hinting automatically. Just execute the below:
sudo ln -s /usr/share/fontconfig/conf.avail/10-autohint.conf /etc/fonts/conf.d/10-autohint.conf
After this you should see the font hinting enabled and thus better experience with fonts.
In shell scripts if you need to get you local IP address corresponding to your hostname then you can use this command
hostname -i
