SED – stream editor for filtering and transforming text
# remove all leading whitespace from line including tabs
# sed -e 's/^[ \t]*//' < inputfile
# regex example – how to find needle in a haystack
# echo "/foo/bar/filename.161212.needle-in-a-haystack.lost-forever" | /bin/sed -r 's/^.+\/filename.[0-9]{6}\.(.+?)\.lost-forever/\1/'
needle-in-a-haystack
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