List of problems and solutions(Mostly Debian based)

1.If you mess up with boot-loader and during installation it complaining about UUID you can fixed it with blkid
2.If you delete some file from command line accidentally (if you delete from command line it deleted permanently) and want to recover you need the foremost package.
3. If you want to shutdown your pc at particular time say 11:30 pm then issue the following command
4.If you mess-up with grub and want to recover then boot from ubuntu live cd. Open terminal and run
5.Set Date and time through command line
6.Print through Command line
7.Quickly Find a PID with pgrep
8.Execute The Last Executed Command
9.Execute The Last Command Starting With ...
10.Last Argument                                                                                                       Deatils
11.Run a Command Repeatedly and Display the Output
12.Save Quickly in VI/VIM
13.Quickly Log Out of a Terminal
14.Navigate to the Last Directory You Were In
15.Make Parent Directories the Smart Way
16.Delete the Entire Line
17.Set the Time stamp of a File
18.Command to File
19.Ampersand
20.Resetting your terminal-session
21. Playing with packages:-
22.Remove unnecessary packages
23.Resolve "Waiting for root file system..."
24.View total memory in a system:-
25.Fixing NTFS Mount Error in GNU/Linux
26. If there is any problem in shutdown:-
27. Copy from cd and create an iso image through command line.
28. Mount a iso image
29.Use packages of DVD to sources.list as repository:-
30. GRUB1 and GRUB2 splash images                                                                          Deatils
31. GRUB on CD-R/W media
32. Connect to Reliance ZTE MC315+
33. If firefox starting @ offline mode (Due to eth0 is disable ):-
34. Erase a re-writeable CD from command line
35. Write a iso image to a cd
36. Get the repository size in GB
37. If you want to see the file permission in numerical form
38. Get the directory/folder size from Command line
39. If you want to keep the files under /tmp directory during rebooting
40. Adding a startup script to be run at bootup
41.USB hard drive read only access
42.Change the bit rate of a mp3 file:-
43. Backup with rsync :-
44. Deleting comment lines starting with a special symbol:- 
45. Working with startup scripts:- 
46. Boot debian faster:-
47. Add Splash Screen to Debian:-
48. Get exact RAM size in MB :-
49. X:- No Screen Found error:-
50. Removing "Too many levels of symbolic links"Error:-                           Deatils
51.Read from standard input and write to standard output and files(tee):-
52.If you faceing problem in resizing Windows Partitions:-
53.Configure Tata indicom HUAWEI and Reliance HUAWEI:-
54. Reverse search by grep
55.How to view logfiles in Debian:-
56.bash No such file or directory
57.Create own Debian repository from an installed Debian or Ubuntu system
58.Removing gpg warning
59.Resolving " could not gain access to /dev/sound/dsp for writing"
60.Unmount forcefully ...
61. Configure sify-bbclient in Ubuntu  10.10 
62.Replace a string
63. Switch between different java installed in your system
64.Enable SCIM(Smart Common Input Method ) for Libreoffice.
65. Restore Ubuntu panel 

Deatils