Useful tips for everyday
How to extract a column from a file? The UNIX cut command is used to extract a vertical selection of columns (character position) or fields…
How do I copy a large file from one server to another in Linux? 5 commands to copy file from one server to another in…
Can I use grub on Windows? In particular, Windows has its own boot loader and Linux uses GRUB. It’s easiest to have a dual boot…
Why cd is not working in shell script? Trying to use cd inside the shell script does not work because the shell script runs in…
How do I setup dual monitors with different resolutions? Can I have two monitors with different resolutions? Make sure that both monitors are connected and…
Why is copying files to USB so slow? Your USB drive isn’t slow because you have too much stuff on it. It’s slow because it…
Where to find subordinate IDs in subuid file? Each line in /etc/subuid contains a user name and a range of subordinate user ids that user…
How does a hard link backup program work? This is how many modern file system backup programs work. On day 1 you make an rsync…
What can I do with the wmctrl command? Only one action can be executed with the invocation of the wmctrl command. Switch to the desktop…
How does alias command work? An alias is a (usually short) name that the shell translates into another (usually longer) name or command. Aliases allow…