Tag Archives: bash

Bash Quirks: understanding behavior of set -e

Posted on January 6, 2022 by Siddharth Jain

There is one bash quirk I just learnt today and that caused me fair amount of debugging. In summary when you use the set -e option in bash, any function that returns a non-zero exit code will cause your script … Continue reading →

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How to check in Bash script if a Docker volume does not exist

Posted on December 17, 2021 by Siddharth Jain

Sometimes you may want to check if a Docker volume exists or not in a Bash script: To check existence of a Docker volume we can use the docker volume ls command with the name option but there are several … Continue reading →

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Bash script to upgrade a Docker container

Posted on December 2, 2021 by Siddharth Jain

Problem: We have an application that has a single instance and runs in a Docker container and further uses a swarm network. We want to write a bash script using which we can deploy new version of the application. The … Continue reading →

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Installing Bash4

Posted on December 8, 2018 by Siddharth Jain

A new macbook pro comes installed with bash version 3. I needed to install bash 4 to be able to use the bash debug vs code extension. To do this run brew install bash once its done you will need … Continue reading →

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Linux & Bash Tips

Posted on October 11, 2015 by Siddharth Jain

Normally by itself the terminal app displays bash in the tab title and its not very useful if you have a large number of tabs open and want to know e.g., what is the pwd in each of the tabs. … Continue reading →

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