<prooftechnique> learn prooftechnique n\xc3\xa9 NihilistDandy He was there some time ago. Maybe he\'ll come back. Maybe he\'s a nihilist, too. (Note from the Editor: He came back, and is a nihilist.)

if [ -z "$1" ];then exec echo "Please give me something to check.";fi;bash -c "if [[ $1 ]];then echo 'True.';else echo 'False.';fi"