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CentOS/RHEL

How to Generate Strong Pre Shared Key in Linux

June 8, 2022June 8, 2022 Sreeram Sreenivasan Leave a comment CentOS/RHEL, Linux, Ubuntu
generate strong pre shared key in linux

Sometimes you may need to generate strong pre shared key in Linux. Here are the steps to do it.

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How to Run Command After Certain Time in Linux

June 8, 2022June 8, 2022 Sreeram Sreenivasan Leave a comment CentOS/RHEL, Linux, Ubuntu
run command after certain time in Linux

Sometimes you may need to run command after certain time in Linux. Here are the steps to do so.

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How to Set SSH Warning Message in Linux

June 8, 2022June 8, 2022 Sreeram Sreenivasan Leave a comment CentOS/RHEL, Linux, Ubuntu
ssh warning banner

Sometimes you may need to set SSH warning message in Linux. Here are the steps to do it.

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How to Get Unique IP Address from Log File

June 3, 2022June 3, 2022 Sreeram Sreenivasan Leave a comment Apache, CentOS/RHEL, Linux, Nginx, Ubuntu
extract unique ip address from log file

Often website administrators need to extract unique IP address from log files. Here are the steps to do so.

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How to Overwrite Input File in Awk

June 1, 2022June 1, 2022 Sreeram Sreenivasan Leave a comment CentOS/RHEL, Linux, Ubuntu
awk overwrite input file

Sometimes you may need to save awk modifications in place. Here is how to overwrite input file in awk command.

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How to Show File Without Comments in Linux

May 24, 2022May 24, 2022 Sreeram Sreenivasan Leave a comment CentOS/RHEL, Linux, Ubuntu
remove comments from file in linux

Sometimes you may need to view file contents without comments in Linux. Here are the steps to do so in Linux.

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How to Evaluate Expression in Shell Script

May 23, 2022May 23, 2022 Sreeram Sreenivasan Leave a comment CentOS/RHEL, Linux, Ubuntu
evaluate expression in linux

Sometimes you may need to evaluate expression in shell script. Here are the steps to do it.

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What does ${} and $() mean in Shell Script

May 23, 2022May 23, 2022 Sreeram Sreenivasan Leave a comment CentOS/RHEL, Linux, Ubuntu
command substitution and parameter expansion

Command substitution and parameter substitution are important features of Linux Shell. Here are the key differences between them.

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How to Run C Program in Linux

May 23, 2022May 23, 2022 Sreeram Sreenivasan Leave a comment CentOS/RHEL, Linux, Ubuntu
run c program in linux

Sometimes you may need to run C Program in Linux. In this article, we will learn how to run C program in Linux system.

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How to Delete Write Protected File in Linux

May 23, 2022June 6, 2022 Sreeram Sreenivasan Leave a comment CentOS/RHEL, Linux, Ubuntu
delete write protected file

Sometimes you may need to delete write protected file in Linux. Here are the steps to do it.

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