Used on Amazon Linux to set up reasonable system limits

limits.sh

echo "
fs.file-max = 70000" >> /etc/sysctl.conf;
 
DATA="* soft nofile 64000\n* hard nofile 64000\n* soft nproc 32000\n* hard nproc 32000\n\n# End of file";
DATA=`echo ${DATA} | tr '\n' "\\n"`;
sed -i "s/# End of file/${DATA}/" /etc/security/limits.conf;
 
echo "# Default limit for number of user's processes to prevent
# accidental fork bombs.
# See rhbz #432903 for reasoning.
 
*          soft    nproc     32000
*          hard    nproc     32000
root       soft    nproc     unlimited" | tee /etc/security/limits.d/90-nproc.conf;