ADVANCED CHALLENGE SOLUTIONS
CHALLENGE 1
cat BSD | sed 's/ //g'
CHALLENGE 2
zcat C61_S67_L006_R1_001.fastq.gz | sed -n '2~4p' | cut -c1-5 | sort | uniq -c
CHALLENGE 3
find /software/perl-libs/ -name "*.pm" | while read x; do grep -H -w -i blast $x; done
CHALLENGE 4
zcat C61_S67_L006_R1_001.fastq.gz | grep -E '[CTGN]A{7,16}$'
CHALLENGE 5
find -L /share/biocore/joshi/projects/genomes -maxdepth 7 -name "*.fa" | grep -E 'ce10|danRer7' | xargs wc -c | awk '$1<10000'