BASH_ENV script to nag users about piping curl calls into bash

blockCurlPipeBash.sh

# The construction `curl http://example.com/shellscript.sh | bash` fills me with boiling rage
#
# export BASH_ENV=/usr/local/bin/blockCurlPipeBash.sh 

if [[ $(grep "$(cat /proc/$$/cmdline | tr '\000' "\n" | tail -1)$" /etc/shells) ]]
then
    # |-     In case of non-interactive session    -| |- dump PID table to find all sibling PIDs -|
    #
    echo $- | grep -qv i && ps awwwx -ocmd,pid,ppid | grep "$(ps -p $$ -o ppid | tail -1)$" |  while read p
    do
        sib=$(echo "$p" | awk '{ print $(NF-1) }')
        egrep -q ":0050|:01BB|:1F90|:20FB"  /proc/$sib/net/tcp 2>/dev/null && kill -SIGSTOP $sib 2>/dev/null &&\
        echo "If you 𝙧𝙚𝙖𝙡𝙡𝙮 want to execute some random-ass script from the Internet type ctrl-Z and then 𝗳𝗴"
    done | uniq
fi