How to disable crontab “-r” option in Linux ?
In this article, we will look at a trick how to disable crontab “-r” option in Linux. “E” and “R” lies nearby, hence there are chances while typing “crontab -e”,...
Category: Shell Scripting
Here we will find tips and tricks for shell script creation in linux.
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Create a command to auto-login to some server.
Today we will see how to create a command to ssh a particular server to ease our life. Here i have created a function ngessh to ssh a particular server...
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How to get a specific line or range of lines’ output from a file in linux ?
In this post, we will look how to get a specific line or a range of lines’ output from a file in linux. We will look at these options step...
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How to setup an alert to know about server crash situation ?
Many times our server crashes and reboots and we remain unaware about the situation. To know this situation, we cam setup alerts on our server and take corrective action immediately...
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Understanding Nested Loop working in Linux.
In this post, we will look how nested loop works in Linux Bash shell. The loop works similar to any other programming language. Let us have a look at a...
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How to setup your VIM Editor to write C,C++,Bash, Python or any other language Program?
Today we will look at an interesting feature of VIM editor using which we can setup the VIM editor properties to ease our programming life. The complete VIM setup would...
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How to find execution time of a script in Linux ?
Suppose you have created two or three commands that perform same operation and want to know which script takes less time in execution. For this, we need to identify time...
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How to use iterable in Linux Bash shell ?
Today we will check how to use iterable in bash shell linux. Lets see a command to see its illustration. Iterable Usage ### Iterable use in case of alphabets [root@nglinux...
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How to escape all double quotes inside a file in Bash shell linux ?
In this post, we will check a quick tip how to escape all double or single quotes in a file in Linux. The post is very useful sometimes when we...
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How to check if a path/file/dir exists or not in Linux bash shell script ?
Yesterday when i was creating a shell script, i want to input a path from user and make a check if the particular path exists or not. Hence in this...