I wanted to preserve this knowledge that I found in a webpage that I can no longer find online along with some info from Wikipedia. DAO (Dis...

In rare cases, the FX-5800P calculator may experience firmware corruption, displaying ROM!!!!! on startup. Here's a comprehensive guide...

To enable slow query monitoring in MySQL or MariaDB, run these commands in your client: SET GLOBAL slow_query_log = 1; SET GLOBAL long_query...

To format a partition (e.g. sda1) as LUKS with an HMAC integrity layer: cryptsetup luksFormat --type=luks2 --integrity hmac-sha256 /dev/sda1...

In Linux, the P4 parameter below will launch 4 LAME instances in parallel to process all the FLAC files into MP3 with the given LAME setting...

To find all writable by the current user files under the working directory: find . -writable To find the non writable ones: find . ! -writab...

If Linux Mint refuses to mount an encrypted external drive that was abruptly disconnected and gives you a message like "file already ex...

Adding setxkbmap -option grp:switch,grp:alt_shift_toggle,grp_led:scroll de,us to your ~/.bashrc (or manually running it after LXDE has start...

The following commands, will mount a VirtualBox VDI file on Linux. First make the directory where you'll mount the virtual partition fil...

On Linux: find -printf "%TY-%Tm-%Td %TT %p\n" | sort -n will show sorted by modification date all the files under the working dire...

If you have an ELF binary in your current directory named luajit, run the following command to see which shared libraries it depends on: rea...

Start a Lua interpreter and paste the following in it: l=os.time() m=0 c=0 while true do n=os.time() if n~=l then l=n m=math.max(m,c) print(...

x="$(head -15 testfile.txt)" This would store the first 15 lines of testfile.txt in variable x.