bash commands

useful bash commands

display first rows and columns of large file

head GTEx_Analysis_2017-06-05_v8_RNASeQCv1.1.9_gene_tpm.gct | cut -d$'\t' -f1-5

loop over strings

more_projects=("AA_at_dl_Hanjie_time_series" "AA_at_dl_Yidong_Time_Series"); 
for more_project in "${more_projects[@]}"; do xxx; done

Finding Non-Empty Files

find *_report.output.tsv -type f -size +0 | wc -l

grep multiple files

grep -rnw '/logs' -e "error" -i

get substring after last ‘_‘

string=asaas_asa-as_assssssss; echo “${string##*_}”