bash:laufendes Programm einen "buchstaben" übergeb

`man ls`
`sleep5`
`<stdin <taste "q">`

man ls|cat

man ls|head n

{ sleep 10; echo "q"; }|cat >kram

{ sleep 10; echo "q"; }|info bash

echo -e "Hier sind \e[5B vier Zeilen leer"

#!/bin/sh
while :
        do
        echo "etwas immer wieder machen"
        echo "beenden mit q"
        read -sn1 par
        if [ "$par" == "q" ]
                then
                exit
        fi
done

> man bash
[...]
{ list; }
              list  is  simply  executed  in the current shell environment.  list must be terminated
              with a newline or semicolon.  This is known as a group command.  The return status  is
              the  exit  status  of  list.  Note that unlike the metacharacters ( and ), { and } are
              reserved words and must occur where a reserved word is  permitted  to  be  recognized.
              Since  they do not cause a word break, they must be separated from list by whitespace.
[...]

15:34 shanghai:~ > ( cd /; );
15:34 shanghai:~ > { cd /; };
15:34 shanghai:/ >

echo -en "\t" | /usr/lib/hxtools/supp/pipe2pt w3m www.google.de