I cannot find any binary editor in v7 unix by reading volumn 1 of the manual.
Is there any?
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There's no hex editor built in, the closest you're going to have is combining
od and the
ed editor, both of which are available in Version 7.
vi isn't included with Version 7, you could probably compile an old version since it was released about that time.
The man page of
od should be useful. The man page of
ed, not as much, but if you know sed, ed commands are a lot like sed since sed is based on ed. You can try reading tutorials here and here or just google "ed editor" "ed tutorial" and so on.
You could try building your preferred editor but I don't know how that will work out on an OS that is over 30 years old.