Script

By Greg Nowak , 10 February, 2022

Delete Files and Folders Older Than X days

find /[FOLDER_NAME]/* -mtime +[OLDER_THAN_DAYS] -exec rm -rf {} \;

Example deletes all files and folders in tmp folder that are older than 180 days: find /tmp/* -mtime +180 -exec rm -rf {} \;

Bash Find and Delete Files Older Than X Days

find [FOLDER_NAME]/* -prune -mtime +14 -exec rm {} \;

SystemD Notes Tips and Tricks

A nice little guide: https://tecadmin.net/run-shell-script-as-systemd-service/

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:

HTTRACK and wayback machine

https://www.httrack.com/

https://gist.github.com/adliwahid/8256ab77cf585a249c215e8f831efbd4

https://superuser.com/questions/532036/trouble-using-wget-or-httrack-to…

Run process in the background Linux

To detach a process started in the terminal, you can always add & at the end. For example: npm run evaluation &

Or: nohup bash script.bash &

After that you can run "jobs", to see the running jobs for that user.

Otherwise you can use "htop" or "ps -ef |grep bash" to find all bash jobs for instance.

References:

https://www.dev2qa.com/how-to-run-node-js-server-in-background/

Wget The Non-Interactive Network Downloader Tips and Tricks

Many times you need to download files from the internet, specifically when you want to automate a process or two. Here is where wget comes in handy. This is a standard tool on most Linux systems.

In some cases the server you want to download from does a couple of checks, so your automation fails. You can come by that by adding a couple of switches like:

wget --user-agent="Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36" --auth-no-challenge URL_OF_FILE_TO_DOWNLOAD