A Little About Shebang in Linux
Shebang is the #! sequence at the beginning of an executable file that tells the system which program should interpret this script📝.
Bash
All posts under tag "Bash"
21 posts total
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Bash: An Example of Optimizing Filtering Commands with grep and awk
I will tell you about a task I solved the other day🧑💻 I slightly changed the input data, but the essence remains the same. There are two CSV files: 📄ping_status.csv contains diagnostic information about host availability by ping.
Bash: Features of Arithmetic Operations - Increment ((expression++))
When testing the host availability check script I mentioned last time, I encountered an interesting Bash feature when performing arithmetic operations💪.
Bash: Writing a Universal Host Availability Check Script
Today we'll write a useful Bash script🧑💻 that performs various host availability checks on the network🌐. As an example, I'll show how to check connectivity using the `ping` utility🏓 and run a traceroute when it's lost⚡.
flock - Locks in Shell Scripts
In this note, we will talk about file locks in Bash scripts🔒 using the specialized utility flock.
SSH – Fine-tuning the client in Linux: config file and ssh-agent
Continuing the topic of using SSH in Linux🐧. Today we'll talk about fine-tuning the client using the ~/.ssh/config📄 configuration file, as well as automatic key import into ssh-agent😎 without entering passwords.
Configuring logging of Bash script output
Many users of Linux🐧 systems face the need to write the output of a particular command/script to a log file📑. In this article we will look at several ways to configure journaling (aka logging) in Linux using the popular command shell — Bash, as an example.
Writing a Function for Quick Access to Complex Commands in Zsh and Bash
In this article we will create a function for the Zsh and Bash shells that allows quick and convenient access to a prepared list of complex, long, and hard-to-remember commands🤯.
Writing a bash script to connect to an OpenConnect VPN server
Today we'll write and try out a simple but well-thought-out bash script that performs a client connection to an OpenConnect VPN server, which we covered setting up and running in one of the previous articles.