Return to changes CVS log

Up to [Research Unix] / researchv8dc / cmd / sh

Annotation of researchv8dc/cmd/sh/changes, revision 1.1

1.1     ! root        1: this is derived from the V.2 shell.
        !             2:        all in the interests of compatibility, etc.
        !             3: differences between this and V.2 shell:
        !             4:        restricted shell and readonly are gone
        !             5:        hash and all its implications are gone
        !             6:        ^ is no longer pipe char
        !             7:        MAILCHECK and MAILPATH are gone. (see below)
        !             8:        * matches all files but . and ..
        !             9:        <<-word is not special
        !            10:        echo, pwd and test are not built in
        !            11:        sys Visms such as /etc/profile and ulimit and login are gone
        !            12:        type is now called whatis, and has different semantics
        !            13:        whenever a name is printed with set or whatis, it is printed
        !            14:                in a form that can be re-evaluated to recover original definition
        !            15:        new builtin 'builtin' always executes builtin version of its first arg
        !            16:                e.g.
        !            17:                        builtin cd
        !            18:                does a chdir regardless of any function cd() defined
        !            19:        [^a-z] matches any character except a through z
        !            20:                the original syntax is [!a-z].
        !            21:        functions can be exported.
        !            22:        "$@" turns to nothing (rather than a null string) if there are no arguments
        !            23:        {} are syntactically the same as (), rather than words that are only
        !            24:                recognized at the beginnings of lines
        !            25:        
        !            26: 
        !            27: differences between this and current shell not listed above:
        !            28:        functions:
        !            29:                f(){
        !            30:                        foo
        !            31:                }
        !            32:        defines f as a function that calls foo.
        !            33:        unset removes function or parameter definitions
        !            34:        $MAIL is checked once every three minutes, as it prints prompt
        !            35:        you can redirect built-ins
        !            36:        cd always cd's; there is no question asked if it corrects spelling.
        !            37: the manual is /n/ikeya/usr/rob/hack/sh/sh.1
        !            38: 
        !            39: dec 1984:
        !            40:        any char except = or ( may be in a function name
        !            41:        ; means the null statement always
        !            42:        set -a exports functions
        !            43:        f()date>x       works
        !            44:                (was a syntax error)

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.