<?php
define('DISALLOW_FILE_EDIT', true);
echo "\n DISALLOW_FILE_EDIT is: " . constant('DISALLOW_FILE_EDIT') . "\n";
//$constants = get_defined_constants();
//var_dump($constants); // pretty large list
?>
Key words: define defined constant constants
You can see a lot of good information for debugging and fixing errors on your Ubuntu server with journalctl and dmesg
journalctl --since "1 days ago"
journalctl --since "10 hours ago"
journalctl --since "12 hours ago" -p 3 -x --utc --no-pager
dmesg | less
dmesg -H --time-format iso| less
Resources:
https://unix.stackexchange.com/questions/50098/linux-network-troublesho…
Wordpress runs it's cron job automatically approximately every 10 minutes. Sometimes it is blocked by .htaccess or other server configuration. To avoid issues, it might be a good idea to run from the server crontab itself.
References:
https://kinsta.com/knowledgebase/disable-wp-cron/
https://wpbeaches.com/set-up-wordpress-wp-cron-php-to-run-manually/
find [FOLDER_NAME]/* -prune -mtime +14 -exec rm {} \;
Example bash on argument 1. It checks if HTTPS is up and if the domain-name is on the site. Most sites have the domain name on the front page somewhere: /usr/local/nagios/libexec/check_http -H $1 --ssl --onredirect=follow --string "$1"
If log file you can run grep on the following keywords: grep -i -e "critical" -e "invalid" -e "warning" [LOGFILE.log]
Keywords: check_http
Check DNS cache status: sudo systemd-resolve --statistics
Flush DNS cache: sudo systemd-resolve --flush-caches
If you experience false characters in your mysqldump, you might want to try to set the encoding specifically. Example with latin1:
mysqldump -u [USER] -p --opt --skip-set-charset --default-character-set=latin1 [DATABASE_NAME] > [OUTPUT_FILE_NAME].sql
Check different encoding settings in mysql when using a specific database: show variables like 'char%';
More info and tips: https://www.toptal.com/php/a-utf-8-primer-for-php-and-mysql
I have a thinkpad laptop with a touchscreen. When I connect my external screen, then the touch sensor on my laptop screen moves the cursor on the external screen, which is not what I want. I want to keep my touch on my laptop screen.
I followed the instructions here: https://askubuntu.com/questions/51445/how-do-i-calibrate-a-touchscreen-…
First run:
xinput
Output:
If you encounter this problem when reading csv-files, you might want to try to change the encoding from UTF-8 to latin1. This worked for me when using the tolower function in R.
Pretty nice solution here with gsub (https://stackoverflow.com/questions/38828620/how-to-remove-strange-char…):