btc

btc

See crypto-currency

varnish

varnish

How to change varnish port in Ubuntu To clear cache, run /usr/bin/varnishadm -S /etc/varnish/secret -T 127.0.0.1:6082 “ban req.http.host ~ .*”

proxy

proxy

Squid ShadowSocks Tor Reverse proxy proxychains Web Proxy debugging proxy Install mitmproxy proxy OWASP Zed Attack Proxy Project https://www.telerik.com/fiddler https://portswigger.net/burp

install sysstat on centos

install sysstat on centos

To install sysstat/sar on CentOS, run yum install sysstat Enable and start sysstat systemctl enable sysstat systemctl start sysstat systemctl

Amazon RDS ERROR 1040 (08004): Too many connections

Amazon RDS ERROR 1040 (08004): Too many connections

On an Amazon RDS Aurora data base, when i connect, i get error root@ip-10-0-0-234:/var/www/html# mysql -h sok.cb21y0qmezhd.us-west-2.rds.amazonaws.com -u sok_wp -p0ZEkrkQx

hdd

blkid Checking NVMe Disk No space left on device smartctl sfdisk Setup ZFS file system in Ubuntu Resize Amazon EC2

No space left on device

No space left on device

On a server, when creating new files, i get error – “No space left on device”. root@sok:~# touch 2 touch:

Disable IPv6

Disable IPv6

To disable IPv6, edit vi /etc/sysctl.conf Add following net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 run sysctl -p

vim E509: Cannot create backup file (add ! to override)

vim E509: Cannot create backup file (add ! to override)

When i save file on a server in vim, i get error “FILE_NAME.EXTN” E509: Cannot create backup file (add !

vim

vim

Vim 8 goes Visual Mode on right click vim E509: Cannot create backup file (add ! to override) Install vim

Vim 8 goes Visual Mode on right click

Vim 8 goes Visual Mode on right click

Vim 8 shipped with Fedora 25 and Debian 9 when you mouse right click or use middle button to insert

apt error after MariaDB to MySQL change

apt error after MariaDB to MySQL change

I have install MariaDB on a Ubuntu 16.04 server. Then installed Virtualmin, that require MySQL, so it removed MariaDB and