concatenate function in scripts

[ramoria]

Hi im new to unix .i have a file name called www_xxx_zzz.txt but now i have to concatenate yyy along with file name i.e the output of file name should be www_xxx_yyy_zzz .txt can you help me on this using SCRIPTS in unix..

[Luuk]

In bash*, a possible solution is:

name=www_xxx_zzz.txt
echo ${name%.txt}_yyy.txt

*i'm not sure it this works with other shells...

[ramoria]

thanks will try it out