There are also some ways to perform string "chopping" via parameter expansion, which are frequently useful for trimming paths. The "${myvar#prefix}" form removes one occurrence of prefix from the variable's expansion:
$ ta='type:json'
$ printf 'Type: %s\n' "${ta#type:}"
Type: json
We can chop a string from the end of the value instead using % instead of #:
$ ta='type:json'
$ printf 'Field name: %s\n' "${ta%:*}"
Field name: type
Note that the stripped string can include wildcards: * to match any number of characters, or ? to match one. In the preceding example, we stripped :*, or the rightmost string following a colon.
If you want to trim a pattern with literal asterisks, you need to escape or quote them:
$ text='*WARNING' ...
