Trouble with SED

[Chris Elmore]

getting unable to parse on the following sed stmt:

sed -n '${x},${y}p' $filnam

where x=beginning line number and
y=ending line number of text in a file I'm trying to extract. Been searching manuals but no solution yet.

[Patrick Wallek · Accepted solution]

Remove the single-quotes from your statement.

sed -n ${x},${y}p ${filnam}

[Sundar_7]

Chris,

It is because the single quotes around the expression will not let the shell to expand the values of $x and $y.

Use double quotes around the expression.

sed -n "${x},${y}p" $filnam

Sundar

[Chris Elmore]

Thanks folks, that fixed the problem. Both your time and expertise was greatly appreciated.

Very Respectfully,
Chris Elmore