| xstat() { | |
| for target in "${@}"; do | |
| inode=$(ls -di "${target}" | cut -d ' ' -f 1) | |
| fs=$(df "${target}" | tail -1 | awk '{print $1}') | |
| crtime=$(sudo debugfs -R 'stat <'"${inode}"'>' "${fs}" 2>/dev/null | | |
| grep -oP 'crtime.*--\s*\K.*') | |
| printf "%s\t%s\n" "${crtime}" "${target}" | |
| done | |
| } |
This tutorial describes how to install TLS to a mail server consisting of Postfix and/or Dovecot by using Let's Encrypt certificates with automatic renewing and firewall management.
The system used for this tutorial was:
$ lsb_release -idrc
Distributor ID: Ubuntu
sysctl -w fs.file-max=12000500
sysctl -w fs.nr_open=20000500
# Set the maximum number of open file descriptors
ulimit -n 20000000
# Set the memory size for TCP with minimum, default and maximum thresholds
sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000'
| #!/bin/bash | |
| # Install dependencies only for Docker. | |
| [[ ! -e /.dockerinit ]] && exit 0 | |
| set -xe | |
| # Update packages and install composer and PHP dependencies. | |
| apt-get update -yqq | |
| apt-get install git libcurl4-gnutls-dev libicu-dev libmcrypt-dev libvpx-dev libjpeg-dev libpng-dev libxpm-dev zlib1g-dev libfreetype6-dev libxml2-dev libexpat1-dev libbz2-dev libgmp3-dev libldap2-dev unixodbc-dev libpq-dev libsqlite3-dev libaspell-dev libsnmp-dev libpcre3-dev libtidy-dev phpunit -yqq |