Off topic:How to add tophat and bowtie to the path?

Question

[mirza]

Hi, I am using ubuntu 16.04 and tried using a command suggested in one of the posts (C: how i can put bowtie2 with tophat2 in the path? ; by alolex) to add tophat and bowtie to my path but I think I wasn't successful.

The command I used,

$ export PATH=$PATH:$home/gjjha/Downloads/softwares/bowtie2-2.2.9/index:/home/gjjha/Downloads/softwares/tophat-2.1.1

$ which bowtie2 returns /usr/bin/bowtie2 but echo $PATH shows neither of them in the path. I also tried running tophat from a directory , it also shows that tophat can't find the b2 index files. What am I doing wrong?