How to check for open port in Linux on multiple servers together ?
Suppose you have a list of servers, and you want to check for a particular port on which server its open. So if you telnet each server on that port...
Category: Linux/Unix
In this category, you can see all articles related to Unix or Linux operating System.
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See how to set ulimits quickly on Linux server for whole system and for individual user.
In this post, we will see how to set ulimits globally on the system and in case we want to set it user-wise. Lets see it step by step. ...
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Solved: Warning: Qt Warning: QStandardPaths: XDG_RUNTIME_DIR points to non-existing path ‘/run/user/44564’, please create it with 0700 permissions.
Lets look at one of the error message below and its solution. Here we get an error of non-existing path with XDG_RUNTIME_DIR warning message. I. Error Warning: Qt Warning: QStandardPaths:...
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Interesting Tip: Know how to create an infinite link in Linux ?
In this post, we will look something really interesting. Do you know how to create an infinite link in linux ? We can create an infinite loop and our path...
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Steps to Check and install package on Debian OS.
In this article, we will see how to check and install packages on debian OS. Lets see step by step to understand this. 1. Check for installed packages on...
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How to add certificate file and its key on httpd server database in Linux ?
In this article, we will see an interesting topic how to add certificate file and its key on HTTPD server DB in Linux. Prerequisite: -Get your new certificate and key...
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How to track where umount: /custom: target is busy ?
Lets see how to track where a partition is busy when it does not allow us to umount. I. Error Message [root@ngelinux001 ~]# umount /custom umount: /custom: target is...
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Solved: [error] Unable to obtain semaphore.
Today we will see an interesting article how to resolve below error. I. Error Details [root@ngelinux001 conf.d]# service httpd start Starting httpd: [Wed May 18 23:41:31 2022] [notice] suEXEC mechanism...