To convert file epcdic to ascill format,i am using below code.Getting some junk characters in output file.not sure what the issue is.Please correct if below command is wrong.
DD conv=ascii if=filename of =output_filename.
Yes, that is correct to convert ebcdic -> ascii.
Be aware that there are so-called "slightly different" translations for ebcdic. For example if you are going from/to FreeBSD that maybe a consideration. Some dd implementations support ibm, ibmb, edcdicb, asciib -- for example. Read your dd man page in the conv section.
The linux version of dd in particular only does very basic translation, the iconv utility may work better.