#!/bin/sh script fails at StringA | tr "[x]" "[y]"


 
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# 1  
Old 02-22-2008
#!/bin/sh script fails at StringA | tr "[x]" "[y]"

I need to take a string (stringA) check it for spaces and replace any spaces found with an equal (=) sign.

This is not working. There are spaces between each component:
$StringA | tr "[ ]" "[=]"

The error returned is:
test: Specify a parameter with this command

Can you help?
# 2  
Old 02-22-2008
echo $StringA | tr "[ ]" "[=]"
# 3  
Old 02-22-2008
Or just
Code:
echo $StringA | tr " " "="

# 4  
Old 02-22-2008
does that just echo, or does it update $StringA?

I'm interested in modifying the parameter's value. Does that change the string or just show the output?
 
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