I have a file with headers like this:

>GL13245678

ABDVEADGADE

>GL123456789

BDADSFAEADVASDFGAGWE

>GL1254367890

DGAEGAHAGADRGASGASDG

I want to shorten the header to GL + 6 digits (only keep the first 6 digits from the orginal header), like this:

>GL132456

ABDVEADGADE

>GL123456

BDADSFAEADVASDFGAGWE

>GL125436

DGAEGAHAGADRGASGASDG

At the same time, there is an empty line above each header (CL123456) and I want to remove these empty lines. Can anyone help me with this? Thanks

In reply to Shorten the headers of a file and remove empty lines using perl by intect

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