Use sed to replace $ in a tcl script

Question

I have a file which contains following:
@$test123
@$test456
$test789

In tcl shell, I want to replace ^$,
I tried following but it doesnt seem to work:
eval exec grep test file | sed s/^$//
@$test123
@$test456
$test789

I should see the $test789 replaced with just test789

fratester · Answer

Since $ has a special meaning in a regex (line end/file end), it has to be quoted or provided as character class.
This does what you want:
sed -e 's/^[$]//g'

Use sed to replace $ in a tcl script

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