Check ping response from a list of servers using for loop in Unix/Linux ?
In this post, we will check the ping response from the list of servers using for loop in Unix/Linux. Lets see below script which will check the ping response from...
Tag: bash
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How to make variables as read only in bash shell linux ?
Variables in Linux can be made read only using the keyword “readonly”. For example, if we want a variable to contain a value say 10 and must not be changed...
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How to color a text/string in linux bash shell & make it blink ?
An interesting thing to do when creating shell scripts is to know how to color some text/output and blink it. Today in this article , we will look how to...
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How to mount a filesystem from backup superblock location ?
Let us look how to mount a filesystem from backup superblock location. In general this is not required, however sometimes in case you feel issue with primary superblock, this way...
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How to search and replace text where line contains some specific string in Linux shell ?
Today we will look how to search some text in a file and replace specific string on the searched line. For this, we will use sed command i.e. Linux Stream...
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Regex to look for multiple characters or words in linux bash shell ?
Today we will look at the regex to search/grep multiple characters or words from a file or output in linux. First create a file with below contents. [root@nglinux ]# cat...
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Use of dot “.” in regular expressions during search/grep in bash shell linux ?
Today we will look at the usage of dot “.” on Linux bash shell and how to use it in shell scripts to match a pattern. I. Usage of “.”...