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RC Logr 20190209 113930

Saturday, 9 Feb, 2019

In bash shell scripting, you can conveniently extract substrings using its parameter expansion or substitution feature. For instance, if you have a variable mydate=2019-02-09, you can extract the year by doing year=${mydate:0:4}. Search for “bash parameter expansion” to see the many options, which might work in your preferred shell as well. 😎

RC Logr 20190209 113930 - In bash shell scripting, you … Rick Cogley
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