System Requirements
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1. OS Platform:- Linux
2. Perl 4.0, or above


Required Inputs
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1. Gff file (.gff)
2. Corresponding Genome file in fasta format.


Inputs Example Files
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1. Gff File:	/GFF/examples/example.gff
2. Genome:	/GFF/examples/sequence.fasta


Output													Preffix(Feature Name)_Suffix(Input GFF/Genome)
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1. gff file wth unique ID i.e their Sr. Nos.						- OUTPUT:	ID_(input "gff" filename)
1. Gene Sequences									- OUTPUT:	gene_(input "genome" filename)
2. Exon Sequences									- OUTPUT:	exon_(input "genome" filename)
3. CDS/cDNA Sequences									- OUTPUT:	CDS_(input "genome" filename)
4. mRNA Sequences									- OUTPUT:	mRNA_(input "genome" filename)
5. Intron Sequences									- OUTPUT:	intron_(input "genome" filename)
6. Intergenic Sequences									- OUTPUT:	intergenic_(input "genome" filename)
7. Promoter / Gene Upstream Sequences							- OUTPUT:	upstream_(input "genome" filename)

Note: The output sequences will be in fasta format and the header of each seqeunce will state the Serial Numbers or Unique IDs preffixed with the plugin name (eg. gene_20). Unique IDs/Serial Numbers will be in accordance to the IDs/Serial Numbers (first column) in the Unique-ID file [OUTPUTFILE: ID_(input "gff" filename].


Installation
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1. Download GFF_v2.0.tar.gz
2. sudo -s
3. gunzip GFF_v2.0.tar.gz
4. tar -vxf GFF_2.0.tar
5. cd GFF_v2.0
6. ./install.sh						    				-------  configures the file system and install the program


Unstallation
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1. cd $PWD/GFF
2. ./unistall

Usage
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1. Using terminal, move to the working directory containing your input files.
2. run Gff-Ex. using command " gff " and follow the instructions.			gff 


Acknowledgements
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1. Dr. Dinesh Gupta
2. Mr. Abhinav Kaushik


DeveloperZ Information
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Achal Rastogi
(Dr. Dinesh Gutpa Group)
Junior Research Fellow
Bioinformatics Facility
Structural & Computational Biology Laboratory
International Center for Genetic Engineering And Biotechnology
Aruna Asaf Ali Marg, New Delhi 110067 India
Email: achal@icgeb.res.in


NOTES
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1. Works best with gff files in GFF-3 format.
2. Being in the directory containing input files is a prerequisite for running GFF-Ex, to avoid output errors. 
3.  Remember to be super-user($ su) while installing. unistalling or executing GFF-Ex.