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One liner to remove the description information from a fasta file and just keep the identifier $ perl -p -i -e 's/>(.+?) .+/>$1/g' sample1.fa #clean #header #fasta

awk 'BEGIN {RS = ">" ; FS = "\n" ; ORS = ""} {if ($2) print ">"$0}' all_p_ctg.fa > all_p_ctg_CORRECTED.fa #remove #empty #clean #fasta

To clean up a fasta file so only first column of the header is outputted:$ awk '{print $1}' file.fa > output.fa #Sed #Clean #Header #Fasta

The clean R graphs http://shinyapps.org/apps/RGraphCompendium/index.php #R #Graphs #Clean #Plot