add or remove programs from boot order? get disk uuid? Find a open program which use a socket or port. sync two directories. Find open prots of your system. kill or freeze a user. debug a program. Find all manuals of a program. Manage Ownership. Export a program path. delete special chars. Bash scripts to close a program. Prevent deleting of files and dirs even by root. Download torrent in the background. Hide the path of dirs from the bash prompt . How to Encrypt a folder?. Shutdown system after certain time. How to automate the key to answer yes or no for the bash script automatically. Check a process or program and to run a program. How to split mp3 and ogg files into small pieces or join them. How to remove workspace icon from the ubuntu menu launcher. Clear recently used history from the system. Find and Delete a file in linux. Copmress and archive files with tar and zip command. How to make zero a hard disk or create fix images with dd command. How to empty trash from all drives or permanently delte files with right click. How to copy files from multiple dirs to one place?. How to start application in gui as diferrent user? How to give user read and write permission to other drives? How to replace a word in all files inside a directory recursively?