how to generate random numbers in a shell script?

[Eugeneapolinary Ju]

# something=$[ ($RANDOM % 59 ) ] 
# echo $something
29


ok, but if I put it in a script:

# echo -e '#!/bin/bash\nsomething=$[ ($RANDOM % 59 ) ]'>test.sh

# cat test.sh 
#!/bin/bash
something=$[ ($RANDOM % 59 ) ]

# sh test.sh 
test.sh: 2: Syntax error: "(" unexpected



Why??

Thank you! :S


      
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