Setting up environment variable in ubuntu10.4

I am very new to Linux operating system and unable to install softwares necessary for my work.

when i use the command

setenv QUERY_STRING 
"pass=lucy& sequence=UGCCUGGCGGCCUUAGCGCGGUGGUCCCACCUGACCCCAUGCCGAACUCAGAAGUGAAACGCCGUAGCGCCGAUGGUAGUGUGGGGUCUCCCCAUGCGAGAGUAGGGAACUGCCAGGCAU&mask=((((((((((.........((((....)))).((((((((((.....(((....)))...(((((.......))))).))))))))))..(((.(((....))))))..)))))))))).&convert=true&explore=7&name=5S_rRNA"
./mcfold.static.exe > 5S_rRNA.data 

Its showing the command setnev doesnot exist. How to set environment variable? I am using ubuntu 10.4

Please help!

Answer

setenv works only in the CShell. If you are using BASH then use the command export

export QUERY_STRING="pass=lucy&sequence=UGCCUGGCGGCCUUAGCGCGGUGGUCCCACCUGACCCCAUGCCGAACUCAGAAGUGAAACGCCGUAGCGCCGAUGGUAGUGUGGGGUCUCCCCAUGCGAGAGUAGGGAACUGCCAGGCAU&mask=((((((((((.........((((....)))).((((((((((.....(((....)))...(((((.......))))).))))))))))..(((.(((....))))))..)))))))))).&convert=true&explore=7&name=5S_rRNA"

./mcfold.static.exe > 5S_rRNA.data