GEN220_2019

2019 Homework Homework 1

1. Write a script called download_count.sh which does the following.
   • Download the data file ftp://ftp.ncbi.nih.gov//blast/db/FASTA/vector.gz from NCBI
   • Print out the count of the number of FASTA format sequences in this file - see Wikipedia FASTA format - each record starts with a “>”
2. Write a script called summary_exons.sh which summarizes the total length of exons in the file data/rice_random_exons.bed
   • read in the file
   • use a loop structure to read each line
   • add up the values into a variable
3. Write a script called ‘strand_gene_count.sh’ to calculate the number of genes that are on the + and - strand in the file.
   • https://fungidb.org/common/downloads/Current_Release/ScerevisiaeS288c/gff/data/FungiDB-45_ScerevisiaeS288c.gff