diff --git a/common-stringSubsitute.py b/common-stringSubsitute.py
deleted file mode 100755
index c32a177b83f45b3ee68c45151c3bb36147561d7a..0000000000000000000000000000000000000000
--- a/common-stringSubsitute.py
+++ /dev/null
@@ -1,37 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-import argparse
-import os
-import re
-import sys
-
-# Return the file obtained by replacing the occurrences of pattern by the replacement string.
-# Use of python method re.sub()
-# python common-stringSubsitute.py -f file -p pattern -r replacement_string
-# ex : python common-stringSubsitute.py -f file -p '(tRNA)(\w{3})(\w{3})' -r '\g<1>-\g<2>(\g<3>)'
-
-if __name__ == '__main__':
-
-    #Get arguments
-    parser = argparse.ArgumentParser(description="Return the file obtained by replacing the occurrences of pattern by the replacement string. Use of python method re.sub(). Example: python common-stringSubsitute.py -f file -p '(tRNA)(\w{3})(\w{3})' -r '\g<1>-\g<2>(\g<3>)'")
-    parser.add_argument('-i','--infile', help='Input file', required=True)
-    parser.add_argument('-o','--outfile', help='Output file', default='outfile')
-    parser.add_argument('-p','--pattern', help='Pattern string to be replaced', required=True)
-    parser.add_argument('-r','--repl', help='Replacement string', required=True)
-    args = parser.parse_args()
-
-    infilename=args.infile
-    outfilename=args.outfile
-    pattern=args.pattern
-    repl=args.repl
-
-    infile=open(infilename,'r')
-    outfile=open(outfilename,'w')
-
-    lines=infile.readlines()
-
-    for line in lines :
-        line_out=re.sub(pattern,repl,line)
-        outfile.write(line_out)
-
-    outfile.close()
\ No newline at end of file