Some (topical) amusements:

    $ echo 25 | pwsh -c '$input-replace"\d",{2*"$_"}'
    410
    $ echo 25 | perl -pe 's/\d/2*$&/eg'
    410

```

    PS> $temp:pwsh_out = 10000
    PS> /bin/cat /tmp/pwsh_out
    10000

```

    $ echo ''''

    PS> echo ''''
    '

```

    PS> $Y = { param($f) . { param($x) . $x $x } { param($y) . $f { param($x) . (. $y $y) $x }.GetNewClosure() }.GetNewClosure() }
    PS> $fac = & $Y { param($f) { param($n) $n -lt 2 ? 1 : $n * (. $f ($n - 1)) }.GetNewClosure() }
    PS> & $fac 5
    120

```

    PS> gv -v|% m*d|% t*
    gv -v|% m*d|% t*

    PS> &($x={"&(`$x={$x})"})
    &($x={"&(`$x={$x})"})

    $ bash
    $ eval ${x='echo eval \${${x@A}}'}
    eval ${x='echo eval \${${x@A}}'}

```

bilingual pun,

    .ps1            .pl
     1               1
     {1}             {1}
     end {1}         sub {1}
     {end {1}}       {sub {1}}
     &{end {1}}      &{sub {1}}

```

    awk  -e 'BEGIN { printf "3\n" }'
    perl -e 'BEGIN { printf "3\n" }'
    ruby -e 'BEGIN { printf "3\n" }'
    pwsh -c 'BEGIN { printf "3\n" }'

```

    $ time ...; time ...; ....
    real 0.00 ...
    real 0.00 ...
    real 0.03 ...
    real 0.22 ...