I found I couldn't access my server, at first I thought it was a network or power outage of my ISP. I opened a support ticket and a reboot brought it back, I realized it's my server's problem, checked the system logs, there is absolutely nothing between the reboot and... ...

Copy a local file to remote host with ssh port 123 # scp -P 123 /backup/localefile username@remotehost.com:/backup/ Copy file from remote host # scp -P 123 username@remotehost.com:/backup/remotefile /backup/... ...

Just after I moved to a new server, I saw the familiar signal 11 messages again: kernel: pid 89410 (httpd), uid 80: exited on signal 11 It didn't happen frequently - only several times per day. I didn't take it too seriously until I saw disk read error messages two... ...

I made some mistakes when adding additional IPs for my new server and was locked out twice. Here are some tips to avoid those errors. Usually, ISP will add all IPs for you. I didn't have to do it by myself until this month. Anyway, they must have made the... ...

Bind configuration has never been easier, I installed bind 9.6, only commented the following line in /etc/named/named.conf. listen-on { 127.0.0.1; }; Then I added my zone files and it's ready. Although I'm still seeing the message "the working directory is not writable", moreover, not only # rndc re...

I only optimized MySQl on a VPS several years ago, it seems that my server never had to. I was just aware of those my.cnf examples coming along with the installation. There are 5 example files under /usr/local/share/mysql/: my-huge.cnf my-large.cnf my-medium.cnf my-small.cnf my-innodb-heavy-4G.cnf.....

PHPClassifieds 7.5 has a SQL injection vulnerability, the detailed how-to was posted publicly, which caused many classifieds websites hacked. The fix is here. Other scripts on my server have been hacked too before, such as phpBB and AwStats, this is probably the only security problem happened to man...

Today I started reading UNIX Shells by Example, I have to say this is a great book, at least for beginners like me. Get your copy if you are really serious about FreeBSD. Sooner or later, you will find it is very helpful to write your own scripts. Shell is... ...

Condensed version for my own reference, only those I didn't use but will make life easier. j or <Return> move cursor down one line k move cursor up one line h or <Backspace> move cursor left one character l or <Space> move cursor right one character 0(zero) move cursor to... ...

A visitor followed a post to install AwStats, this post is three years old, it's absolutely not recommended. Ports are changing very quickly. Even if the program itself doesn't change much, the post-installation configuration has very probably changed many times. I would install a program via port l...