$ type checkshell
checkshell is a function
checkshell ()
{
    grep --color -Po '^[^#].*/\K.+' /etc/shells | sort -u | while read s; do
        echo -en "${s##*/}\t:   ";
        $s -c "$@";
    done
}

$ type timethis
timethis is a function
timethis ()
{
    max=$1;
    shift;
    for com in "$@";
    do
        echo "COMMAND: $com ";
        c=0;
        while [[ $c -lt $max ]]; do
            echo $c 1>&2;
            let c++;
            ( time -p eval "$com" ) 2>&1 | grep --color -oP 'real.*?\K[\d\.]+';
        done | awk -vm=$max '{k+=$1}END{print (k/m)}';
    done
}

checkshell(){

    awk -F"/" '!/^#/ && NF>1{print $NF}' /etc/shells | sort | uniq |
				while read s ; do
						printf '%s' "${s##*/}\t:   ";
						"$s" -c "$@";
				done
}

function testthis
{
    # Will run the given command in all avaliable shells and capture and
    # display the output generated on standard output as well as any
    # diagnostic messages generated on standard error, together with the
    # exit code.

    grep '^[^#]' /etc/shells | (
    typeset -a tmpfiles
    trap 'rm -f "${tmpfiles[@]}"' EXIT
    while read realshell; do
        typeset shell="${realshell##*/}"

        typeset tmpout="$( mktemp -p /tmp "$shell-out.XXXXXXXX" )"
        typeset tmperr="$( mktemp -p /tmp "$shell-err.XXXXXXXX" )"

 $ testthis 'wc <(echo foo)'
=== sh (exit 1)
--- stdout:
--- stderr:
/bin/sh: -c: line 0: syntax error near unexpected token `('
/bin/sh: -c: line 0: `wc <(echo foo)'
=== bash (exit 0)
--- stdout:
      1       1       4 /dev/fd/63
--- stderr:

$ testthis 'wc <(echo foo)'
=== sh (exit 1)
--- stdout:
--- stderr:
/bin/sh: syntax error: `(' unexpected
=== csh (exit 1)
--- stdout:
--- stderr:
Missing name for redirect.
=== ksh (exit 1)
--- stdout:
--- stderr:
/bin/ksh: syntax error: `(' unexpected
=== ksh93 (exit 0)
--- stdout:
       1       1       4 /dev/fd/3
--- stderr:
=== rksh93 (exit 0)
--- stdout:
       1       1       4 /dev/fd/3
--- stderr:
=== bash (exit 0)
--- stdout:
       1       1       4 /dev/fd/63
--- stderr:
=== dash (exit 2)