<oerjan> learn shebang_args_or_input is similar to print_args_or_input, but for other scripting languages like perl or python. E.g. if you have a python script that pipes stdin, replace the usual shebang line by #!/hackenv/bin/shebang_args_or_input python .

#!/bin/sh
cd /var/irclogs/_esoteric
if [ "$1" ]; then
    grep -P -i -- "$1" ????-??-??.txt | shuf -n 1
else
    file=$(shuf -en 1 ????-??-??.txt)
    echo "$file:$(shuf -n 1 $file)"
fi