Free and Open Source blogger with an attitude
‘fdupes’ is a handy tool to find and list duplicates file in GNU/Linux or Unix-like operating system.
In Ubuntu you can install fdupes using apt command-line tool
apt -y install fdupes
Usage of fdupes is simple enough, just write:
fdupes -r /path/to/files/
The command will list duplicate files in the “/path/to/files”directory, which is a prime candidate for deletion.
This XKCD strip explains what essentially Meltdown vulnerability which affects Intel microprocessor
For those who are seeking free web hosting to test their PHP / MySQL application can look into InfinityFree.net service which has interesting offers:
The main advantages which entice me to InfinityFree are their support for SSL Certificate, 99% uptime guarantees and support for adding own domain name with their own free DNS.
The support for SSL certificate means that you can host Telegram Bot, Google Map web application and web app which utilizes OAuth API!
A rare sight for a completely free web hosting provider.
The only downside for InfinityFree is the free hosting only support up to 50,000 hits on the web server, which is fair by me as the free hosting could provide a good playground for Students and Web App Enthusiast to experiment with their code.
Here’s a quick way to export SQLite3 database to *.sql text file.
sqlite3 this.db .dump > this-db.sql
The command is useful for exporting SQLite database to standard ANSI .sql which can be imported into other database management system such as Oracle, MariaDB/MySQL, etc
The dreaded 404 HTTP code means page not found. However multiple 403 and 404 on weblogs also can also mean there are attempts to crack the website.
The awk script down here can be useful tool to analyze weblogs and identify multiple attempts at cracking the web application.
awk '($9 ~ /404/)' access.log | awk '{print $7}' | sort | uniq -c | sort -n
The script can also be tweaked for other HTTP status code too.
Cronjob or CRON is an important tool to perform automated / schedule task for web application.
Some shared hosting company may limit (or completely disable) the cron service functionality leading to some web application unable to perform periodic / automated task.
Luckily there’s website such as Cron-Job.org which offers free cron-job to those who aren’t able to obtain one.
The best thing about Cron-Job.org service, is they allow minute-by-minute cronjob execution for free!
Bonus: The folks at Cron-Job also releases the source code behind the service at GitHub!