Update faq.md
Adding an example question to get the process going.
@@ -11,6 +11,26 @@ Contact email: [admin@biostars.org](mailto:admin@biostars.org)
### Common questions
+* How to convert Gene Symbols into Entrez ID and vice-varsa
+
+Using [EntrezDirect](http://bit.ly/entrez-direct)
+
+```
+# Remove `head -10` to get full list
+
+$ esearch -db gene -query "human [orgn]" | efetch -format tabular | head -10
+tax_id Org_name GeneID CurrentID Status Symbol Aliases description other_designations map_location chromosome genomic_nucleotide_accession.version start_position_on_the_genomic_accession end_position_on_the_genomic_accession orientation exon_count OMIM
+9606 Homo sapiens 120893160 0 live LOC120893160 Sharpr-MPRA regulatory region 11691 1q 1
+9606 Homo sapiens 120893158 0 live LOC120893158 Sharpr-MPRA regulatory region 11936 1q 1
+9606 Homo sapiens 120893156 0 live LOC120893156 Sharpr-MPRA regulatory region 5363 1p 1
+9606 Homo sapiens 120893154 0 live LOC120893154 Sharpr-MPRA regulatory region 8666 1p 1
+9606 Homo sapiens 120893152 0 live LOC120893152 Sharpr-MPRA regulatory region 9477 1p 1
+9606 Homo sapiens 120893150 0 live LOC120893150 Sharpr-MPRA regulatory region 3357 1p 1
+9606 Homo sapiens 120893148 0 live LOC120893148 Sharpr-MPRA regulatory region 2368 1p 1
+9606 Homo sapiens 120893146 0 live LOC120893146 Sharpr-MPRA regulatory region 5145 1p 1
+9606 Homo sapiens 120893144 0 live LOC120893144 Sharpr-MPRA regulatory region 4548 1p 1
+
+```
### Support for Biostar
