While you can use nohup for getting the command running even after logged out via SSH, there are times when you need to interact with the command first before it can go on with the job, such as with rsync. In this case, you need this instead of nohup: jobid is usually 1 or you …
I was testing the WP Mail SMTP plugin to send emails in WordPress via SMTP servers but when it was trying to connect to the remote SMTP server, it kept getting error “Connection refused”. So I tried: telnet smtp.xxxx.com 587 To test the connection. Turned out my own server is preventing the outgoing request because …
For example, a command like this could run a few days if there are so many images: tar zcf xxxx.images.tgz * So it’s best to put it in background when started, by nohup: nohup tar zcf xxxx.images.tgz * > nohup.log 2>&1 &
If you have multiple servers you’d probably need rsync to transfer files among servers via SSH. An error like this, however, will occur when CSF protects the servers against malicious SSH connection attempts: The solution is very simple. Just whitelist each server IP on the other server and vice versa: Wherein 1.1.1.1 is the other …
Switched one of our sites to CloudFlare DNS and in our code routines, we connect to the site via SSH by its domain as the host. Apparently it kept timing out as we were connecting to the wrong IP resolved by CloudFlare DNS which wasn’t the real IP for our server at all. So we …
Just use this and the WGET command will start crawling the target site and download certain levels of pages from the starting URL, including all its assets such as images or CSS files. wget -k -K -E -r -l 1 -p -N -F –convert-links -H -Dcdn.shopify.com,v.shopify.com,www.yoursite.com,your-site.myshopify.com –restrict-file-names=windows https://www.yoursite.com/ The -D option specifies all the hosts …
Clone any static site by a simple Linux command WGET Read More »
<Files *.php> Order Deny,Allow Deny from all #Allow from 127.0.0.1 </Files> <Files index.php> Order Allow,Deny Allow from all </Files> The 2 <Files> directives must be in the exact same order as above.
RewriteEngine on RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)\/(\?.*)?$ $1$2 [R=301,L] Yeah, that’s it. So: /path/dir/ is redirected to /path/dir /path/dir/?a=1&b=2 is redirected to /path/dir?a=1&b=2
Many’s the time after you have uploaded some PHP script to your server and point the web browser to the address it gives 500 Internet Server Error. If you have suPHP installed this is very likely because the uploaded PHP script (files and directories) have wrong permissions set to them. With regards to Linux permissions, …
By default, phpMyAdmin shows an estimated number of records for InnoDB tables that have more than 20,000 rows. It can vary by every fresh as much as 50% or even more. Makes it hard to get an exact number of records for the tables as we have to explicitly run an SQL query to do …
Make phpMyAdmin Show Exact Number of Records for InnoDB Tables Read More »
When I ssh into my Debian Squeeze server and start up tail -f to watch a log file or anything else which uses ctrl-c to exit/stop, ctrl-c does not work. It prints the ^C character on screen and just keeps right on going. Is there a setting somewhere that can be tweaked or maybe a …
Apache is a marvelous web server that offers .htpasswd and .htgroup for controlling restricted access to your website. By help of .htaccess, they work as a member login & user management system that is so simple and easy to deploy. You can even define user groups / roles with it. Basically, .htpasswd defines pairs of …
PHP Class for Handling .htpasswd and .htgroup (Member Login & User Management) Read More »
I was debugging about some mod_rewrite errors caused by the .htaccess file on one of my sites and couldn’t solve the problem myself so I opted for a help thread on the SitePoint.com forum. Turned out it’s not the problem of my mod_rewrite rules in .htaccess but some incorrect file permissions that were causing the …
To delete all content in any directory, including all sub-directories and files, I’ve been using this: rm -rf somedir/* If it is to delete all content of the current directory: rm -rf * However, it turns out ‘rm -rf’ doesn’t remove hidden files such as .htaccess (Files with a name starting with a dot are …
Linux: How to delete / remove hidden files with ‘rm’ command? Read More »
The ‘find’ command in Linux systems searches through a directory and return files that satisfy certain criteria. For instance, to find a file that contains the string ‘needle text’ in the ‘mydocs’ directory: find mydocs -type f -exec grep -l “needle text” {} \; The problem of this approach is that it would search through ALL files …
Linux: How to ‘find’ and search ONLY text files? Read More »
The other day I was very upset about some extraordinary down times of my unmanaged VPS box at Linode. As it’s unmanaged, support staff at Linode are not responsible for the failures. I contacted them and they told me it’s OOM (Out Of Memory), pointing me to the right documentation to figure out how to …
Sometimes you want the user to access something (a web page or a downloadable file) only by clicking a link on your own website instead of being able to directly access it by typing in the URL address in the browser address bar. This is achievable by a few lines in .htaccess. RewriteEngine On RewriteCond …
Use .htaccess to allow access only from a single HTTP referrer Read More »
It’s not only insecure but it inconveniently commands the use of PHP function stripslashes() every time you pull something from the database or when you get something from the client side. While most of the hosts out there are using factory settings of PHP that turn off magic_quotes_gpc by default, there are a few that …
Turn off and disable magic_quotes_gpc in .htaccess Read More »
PHP has a stat() function that returns an array containing the meta information of a file such as owner, size, time of last access, last modification or last change. It’s basically the stat command under Linux that returns and shows the file system meta information of any file or directory: stat myfile.txt Which returns: File: …
Funny I should use “zipped” for an RAR compressed package. Anyway, you can easily zip or unzip a zip file or tar compress a package, but how does one do it with an RAR file? WinRAR is well distributed across all Windows systems. But on Linux, you have to first install the command package rar. …
Linux: How to open and extract an RAR zipped file and unrar the archive? Read More »
