Question

How to cut off known substring from the string in sh?
For example, I have string "http://www.myserver.org/very/very/long/path/mystring"
expression "http://www.myserver.org/very/very/long/path/" is known. How can I get “mystring”?

Thanks.

Answer 1

E.g. using perl:

echo "http://www.myserver.org/very/very/long/path/mystring" | perl -pe 's|^http://www.myserver.org/very/very/long/path/(.*)$|\1|'

E.g. using sed:

echo "http://www.myserver.org/very/very/long/path/mystring" | sed 's|^http://www.myserver.org/very/very/long/path/\(.*\)$|\1|'

E.g. when the search string is held in a variable, here named variable. Use double quotes to expand the variable.

echo "http://www.myserver.org/very/very/long/path/mystring" | sed "s|^${variable}\(.*\)$|\1|"