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  1. Text Processing  Cut:  only selected column: 1 BASED index // check the unique value on 7 th column cut -f 7  amel_OGSv3.2.gff3 | sort -u | wc -l default is tab delimited cut   -f 1,3  fName if other is used as delimiter cut   -f 1,3 -d ':'  fName GREP copy line containing "gene*" // to find exact word use -w // it will find as a substirng/word , But if you want exact word use -w grep -iw "gene*" amel_OGSv3.2.gff3 > ./amel_OGSv3.2.gene.gff3 grep -w "[-]9" fname // find word -9 in file. grep multiple words in file  grep 'good\|bad' test.txt The following command line will grep from 1  lines [before] the match through 1000 lines [after] the match. grep "^AC P0001" factor.table -B1 -A1000 > out.txt “^AC P0001” is a regular expression. The carrot (^) means the start of a line. So, the quoted text means to find the line that starts with the dealer name AC P0001. The -B1

Stringtokenizer ==============                 strLine = brAllrna.readLine(); // A                 StringTokenizer stringTokenizer = new StringTokenizer(strLine, " \t");                 Vector pwmA = new Vector ();                 while (stringTokenizer.hasMoreElements()) {                     Double val = Double.parseDouble(stringTokenizer.nextElement().toString() );                     pwmA.add(val);                                     }