Downloads the UniGene data from NCBI, parses them with awk to get the information about the UniGene cluster, the gene symbol and Entrez Gene identifier, and the Genbank sequences

download_parse_unigene.sh

#!/bin/sh

wget ftp://ftp.ncbi.nih.gov/repository/UniGene/Homo_sapiens/Hs.data.gz
gunzip Hs.data.gz

<Hs.data awk -v OFS=',' 'BEGIN { print "unigene_id", "gene_id", "symbol", "gb_acc"}
                         /^ID /{ug=$2}
                         /^GENE_ID /{eg=$2}
                         /^GENE /{s=$2}
                         /^SEQUENCE /{
                            sub("ACC=", "", $2);
                            sub(";", "", $2);
                            print ug, eg, s, $2}' > Hs.data.csv