Question

I have a file and am reading it line by line. Some lines have dollar signs in them, and I would like to remove them using sed. So for instance,

echo $line

returns

{On the image of {$p$}-adic regulators},

On the other hand,

          echo $line | sed 's/\$//g'

correctly returns

 {On the image of {p}-adic regulators},

but

 title=`echo $line | sed 's/\$//g'`; echo $title

returns

 {On the image of {$p$}-adic regulators},

Answer 1

You need to escape the backslash in your sed command when using it within backticks:

title=`echo $line | sed 's/\\$//g'` # note two backslashes before $