Say I have some file with a bunch of lines in the form
someString=someMoreCharacters anotherString.blah=foo=bar blah.blah.blah=foo.bar.=foobar
someString anotherString.blah blah.blah.blah
I want to use awk to extract the substring that starts at the beginning of the line and goes up until, but not including the first equals sign. I want to be able to pipe this output to xargs.