There is way to improve the speed of boot process in Ubuntu Linux by profiling your boot. Profiling lets Ubuntu make a list of all the files that are accessed during bootup, it then sorts the files according to how they are stored on your hard-disk. So the next time the system is booted, the files would be read faster.
To profile boot you need to follow these steps:
- At the grub menu highlight the kernel
- Press e for edit
- Choose the line starting with kernel and press e again. Now add the word profile to the end of this line. Hit Enter and then press b to boot
NOTE: The system will boot slower this one time, the next time however you should see an improvement. Also keep in mind that all this is machine-dependent and also depends on the arrangement of files on your hard-disk, so the difference you see might not be huge, or even nil in some cases.Print This Post
In this article I will show you some keyboard shortcuts and other command line tricks to make entering commands easier and faster. Learning them can make your life a lot easier!
Here are some keyboard shortcuts you can use within terminal:
Alt-r Undo all changes to the line.
Alt-Ctrl-e Expand command line.
Alt-p Non-incremental reverse search of history.
Alt-] x Moves the cursor forward to the next occurrence of x.
Alt-Ctrl-] x Moves the cursor backwards to the previous occurrence of x.
Ctrl-a Move to the start of the line.
Ctrl-e Move to the end of the line.
Ctrl-u Delete from the cursor to the beginning of the line.
Ctrl-k Delete from the cursor to the end of the line.
Ctrl-w Delete from the cursor to the start of the word.
Ctrl-y Pastes text from the clipboard.
Ctrl-l Clear the screen leaving the current line at the top of the screen.
Ctrl-x Ctrl-u Undo the last changes. Ctrl-_
Ctrl-r Incremental reverse search of history.
!! Execute last command in history
!abc Execute last command in history beginning with abc
!n Execute nth command in history
^abc^xyz Replace first occurrence of abc with xyz in last command and execute it