I have a command in a bash script which gives the following output
repository: docker/images
tags:
- 0.1-1
- 0.1-2
- 0.1-3
- 0.1-6
- 0.1-7
- 0.1-9
However, from the above output, I only need to browse through 0.1-1, 0.1-2 ...and run a different command.
Please let me know how this can be achieved
Add a test to check if the line starts with - using grep:
... | grep '^-' | while read -r line; do echo "$line"; ## Do stuffs; done
As grep's output is buffered, you might want line buffering, need GNU grep:
... | grep --line-buffered '^-' | while ...; do ...; done
Or use stdbuf:
... | stdbuf -oL grep '^-' | while ...; do ...; done
