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Ubuntu 16 – how to increase maximum file open limit ( ulimit -n )

If you are setting up nginx,chances are you will discover your worker_connections is at some low number, such as 1024. You can’t increase this number unless you increase kernel limit as well. First of all run cat /proc/sys/fs/file-max to discover your maximum limit.

abc@ubuntu:~$ cat /proc/sys/fs/file-max
1048576
abc@ubuntu:~$ ulimit -n
1024

	wget xxxx/scrt-7.3.3-779.ubuntu13-64.x86_64.deb
	sudo dpkg -i scrt-7.3.3-779.ubuntu13-64.x86_64.deb
	wget http://download.boll.me/securecrt_linux_crack.pl
	sudo perl securecrt_linux_crack.pl /usr/bin/SecureCRT

	License:

	Name: xiaobo_l
	Company: www.boll.me
	Serial Number: 03-57-081557

	#!/bin/bash

	############################################################
	# core functions
	############################################################

	function check_install {
	if [ -z "`which "$1" 2>/dev/null`" ]
	then
	executable=$1