i had to do a search and replace assignment and sed did it just fine for me.
(thanks to this ng as well)
please let me know as to when would one use lex yacc awk.
i am asking because these are tools and tools are for getting something ie
your assignment or work done efficiently. right ?? hence in this context
please let me know a typical application where one has used lex/
(for sed i just did a small job and realised how powerful it was)