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Annotation of 41BSD/cmd/oldcsh/READ_ME, revision 1.1.1.1

1.1       root        1: Thu Apr 19 12:17:29 PST 1979
                      2: 
                      3: This shell needs a printf which prints through putchar like it used to.
                      4: The printf.c in this dir hacks one from the stdio printf without dragging
                      5: in all the stdio stuff.  It should work on most systems which only have stdio.
                      6: Some early versions of stdio have a "strout" whose first 2 arguments are
                      7: reversed.  Check this before you run the shell.
                      8: 
                      9: The getpw*.c stuff here is simply to keep from dragging in all the data space
                     10: from the stdio stuff (an input buffer, output buffer, file structs, etc)
                     11: since the shell does its own i/o anyways because of the way
                     12: it parses in loops.  If you don't care about more data space you dont need
                     13: to take these.
                     14: 
                     15: For the debugging "alloc" command to work it needs to work its
                     16: way through the alloc list.  A modified version of alloc which does this
                     17: is in this directory.  If you wish you can simply get rid of the "alloc"
                     18: command and not define "debug" in makefile.
                     19: 
                     20: For the shell to coexist with another shell you can define OTHERSH
                     21: in sh.local.h as, e.g. "/bin/sh".  If a file which purports to be a shell
                     22: script doesn't start with a `#' this other shell interprets it.
                     23: If necessary a longer string than just `#' could easily be used.
                     24: If OTHERSH is not defined then this hack doesn't occur.
                     25: For full sanity complementary code should be placed in OTHERSH!
                     26: 
                     27: Look at sh.local.h for other things which you may need/want to change.

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