ubuntu, cant expand variable inside sed

denywinarto · 06-23-2015, 12:31 AM

Hi,i cant seem to expand a variable (LINKNAME) inside sed... ive used double quotes, changed the delimiter, but i still cant get it to work

Code:

LINKNAME=$(echo -e "${NEW_MOVIES_DIRLIST}" | sed -r 's,FOLTERS_TO_BE_SCANNED/HDD-EXTENDED.-SD./,,g')

NEW_MOVIES_DIRLIST=$(echo -e "${NEW_MOVIES_DIRLIST}" | sed "s,$,LINKNAME,g")

It wont expand LINKNAME, any idea why?

thanks before

Ranamon · 06-23-2015, 05:28 PM

Quote:

Originally Posted by denywinarto

Hi,i cant seem to expand a variable (LINKNAME) inside sed... ive used double quotes, changed the delimiter, but i still cant get it to work

Code:

LINKNAME=$(echo -e "${NEW_MOVIES_DIRLIST}" | sed -r 's,FOLTERS_TO_BE_SCANNED/HDD-EXTENDED.-SD./,,g')

NEW_MOVIES_DIRLIST=$(echo -e "${NEW_MOVIES_DIRLIST}" | sed "s,$,LINKNAME,g")

It wont expand LINKNAME, any idea why?

thanks before

You have a typo in there: "s,$,LINKNAME,g"

It needs to be: "s,$LINKNAME,<what hoes here>,g"

The dollar sign needs to go right in front of the variable name. What you have up there literally says to find a string that consists of $ and substitute LINKNAME for it.