Does Alpine run bash?
Alpine Linux comes with BusyBox. By default, bash is not included with BusyBox and Alpine Linux. The postmarketOS project, which is designed to run on mobile devices, is based on Alpine Linux. Many Docker images are also based upon Alpine, and you may install bash shell in Docker-based images too.
What shell does Alpine Linux use?
busybox
– The default shell in Alpine is the busybox provided ash.
Why do shell scripts start with bin bash?
Bash has evolved over the years taking code from ksh and sh . Adding #!/bin/bash as the first line of your script, tells the OS to invoke the specified shell to execute the commands that follow in the script. #! is often referred to as a “hash-bang”, “she-bang” or “sha-bang”.
How do I run Alpine bash?
4 Answers
- Have a shebang defining /bin/bash as the first line of your sayhello.sh, so your file sayhello.sh will begin with bin/sh #!/bin/sh.
- Install Bash in your Alpine image, as you seem to expect Bash is present, with such a line in your Dockerfile: RUN apk add –no-cache –upgrade bash.
Is Alpine Linux good?
Alpine Linux is designed for security, simplicity and resource effectivity. It is designed to run directly from RAM. Currently, the latest version of Alpine Linux is just around 4MB which is insanely amazing. This is the main reason people are using alpine linux for releasing their application.
Can you install Bash shell in Alpine Linux?
By default, bash is not included with BusyBox and Alpine Linux. The postmarketOS project, which is designed to run on mobile devices, is based on Alpine Linux. Many Docker images are also based upon Alpine, and you may install bash shell in Docker-based images too.
Which is the default shell in alpine Docker?
Alpine comes with ash as the default shell instead of bash.
What kind of executable does Alpine Linux use?
Alpine Linux comes with BusyBox. It is described as, “The Swiss Army Knife of Embedded Linux.” BusyBox combines tiny versions of many common UNIX utilities into a single small executable including /bin/sh. By default, bash is not included with BusyBox and Alpine Linux.
Can you run a bash script in a docker container?
You can run a Bash script in an Alpine-based Docker container. And this works too. Remember to grant execution permission for all scripts. By using the CMD, Docker is searching the sayhello.sh file in the PATH, BUT you copied it in / which is not in the PATH.