Editing Rc (Unix shell) (section)

==Examples==
The Bourne shell script:

<syntaxhighlight lang="bash">
if [ "$1" = "hello" ]; then
    echo hello, world
else
    case "$2" in
    1) echo $# 'hey' "jude's"$3;;
    2) echo `date` :$*: :"$@":;;
    *) echo why not 1>&2
    esac
    for i in a b c; do
        echo $i
    done
fi
</syntaxhighlight>

is expressed in rc as:

<syntaxhighlight lang="text">
if(~ $1 hello)
    echo hello, world
if not {
    switch($2) {
    case 1
        echo $#* 'hey' 'jude''s'^$3
    case 2
        echo `{date} :$"*: :$*:
    case *
        echo why not >[1=2]
    }
    for(i in a b c)
        echo $i
}
</syntaxhighlight>

Rc also supports more dynamic piping:

 a |[2] b    ''# pipe only [[standard error stream|standard error]] of a to b — equivalent to '3>&2 2>&1 >&3 | b' in [[Bourne shell]]''<ref name=RCTD/>{{rp|at=Advanced I/O Redirection}}
 a <>b       ''# opens file b as a's [[standard input]] and [[standard output]]''
 a <{b} <{c} ''# becomes a {standard output of b} {standard output of c},''
             # ''better known as "[[process substitution]]"''<ref name=RCTD/>{{rp|at=Pipeline Branching}}