How to transfer files from a VPS to a FTP web hosting server? First login via SSH to your VPS. With “scp” you can transfer files from your VPS to the FTP server. Open the directory you want to copy to the other server, i.e: cd /home/user/wwwcd /home/user/www This command will copy files and folders […]
If you get this error message while running apt-get install: dpkg: error: dpkg status database is locked by another process E: Sub-process /usr/bin/dpkg returned an error code (2)dpkg: error: dpkg status database is locked by another process E: Sub-process /usr/bin/dpkg returned an error code (2) Just type this to fix that error: dpkg –configure -adpkg […]
Simple PHP function to validate JSON in PHP: function is_valid_json($string) { return !empty($string) && is_string($string) && is_array(json_decode($string, true)) && json_last_error() === 0; }function is_valid_json($string) { return !empty($string) && is_string($string) && is_array(json_decode($string, true)) && json_last_error() === 0; } Alternatively you can do like this (doing only one json_decode() call): $output = json_decode($string, true); if (!is_array($output) […]
When opening an application in Windows OS you may encounter this error: The program can’t start because VCRUNTIME140.DLL is missing from your computerThe program can’t start because VCRUNTIME140.DLL is missing from your computer To fix this VCRUNTIME140.DLL error you just need to install: Microsoft Visual C++ 2015 Redistributable Update 3 RC
Simple PHP snippet to download a remote URL to a file: function curl_download_to_file( $url, $file ) { $fp = fopen($file, ‘w+’); $curl = curl_init(); curl_setopt ($curl, CURLOPT_URL, $url); curl_setopt ($curl, CURLOPT_TIMEOUT, 10); curl_setopt ($curl, CURLOPT_CONNECTTIMEOUT, 10); curl_setopt ($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20100101 Firefox/13.0.1"); curl_setopt ($curl, CURLOPT_HEADER, 0); curl_setopt ($curl, CURLOPT_RETURNTRANSFER, 1); […]
Simple PHP snippet to check if a file was last modified more than 1 hour ago: if(time() – filemtime("/path/to/file") >= 1 * 3600) { echo "File was modified more than 1 hour ago"; }if(time() – filemtime("/path/to/file") >= 1 * 3600) { echo "File was modified more than 1 hour ago"; } Check if a file […]
If suddenly your Linux server show these messages: -bash: /usr/bin/who: Input/output error -bash: .bash_history: Read-only file system -bash: /bin/df: Input/output error-bash: /usr/bin/who: Input/output error -bash: .bash_history: Read-only file system -bash: /bin/df: Input/output error Ask your hosting company to check your server for hardware issues. most probably the hard-disk is broken/damaged.
DropzoneJS is a modern and open source JavaScript library that provides drag’n’drop file uploads with image previews, showing nice progress bars. The main advatnage of DropzoneJS is that it doesn’t depend on any other library (like jQuery) and is highly customizable. The typical way of using DropzoneJS is by creating a form element with the […]
Simple steps to correctly backup and restore /etc/letsencrypt folder. First you need to compress /etc/letsencrypt with tar: tar czf /root/letsencrypt.tar.gz /etc/letsencrypttar czf /root/letsencrypt.tar.gz /etc/letsencrypt To restore it on another server make sure to preserve symlinks! Copy /root/letsencrypt.tar.gz on the new server. Uncompress letsencrypt.tar.gz with gunzip: gunzip letsencrypt.tar.gzgunzip letsencrypt.tar.gz Then uncompress the .tar archive using tar […]
I recently got a TP-Link TL-MR6400 to use it with a 4G SIM card. However once I configured all I noticed that the WiFi download speed was 50% slower than with wired (cable). So I made a quick test by disabling the WiFi password (check “Disable Security”): And I immediately noticed the WiFi download speed […]