Linux Amazing Keypresses & Commands : Set 1

If you want to make your Linux working experience more comfortable & faster, then go through these commands.
1. Linux commands on the console may often span many lines, and encountering a type mistake at the beginning of the command would require you to use the slow way of punching the right/left arrow keys to traverse in the command string.
Remedy : Try Ctrl+e to move to the end of the command string and Ctrl+a to reach start. It’s the fastest way to edit a Linux command line. To delete a word in the command string, use Ctrl+w.



2. Another wonder of a simple shell variable is !$. Let’s say you have to create a directory, go into it and then rename it. So the flow of commands would be:

Code:

$ mkdir your_dir
$ mv your_dir my_dir
$ cd my_dir

Remedy: Well, Linux has a shorter and quicker way:

Code:

$ mkdir your_dir
$ mv !$ my_dir
$ cd !$

!$ points to the last string in the command string.

3. Run the following code to get to know the basic block of any Linux command & what it does internally:

Code:

$ strace -c /usr/bin/ls

strace is a system call monitor command and provides information about system calls made by an application, including the call arguments and return value.

4. For creating a chain of directories and sub-directories, something like /tmp/our/your/mine?
Remedy: Try this:

Code:

$ mkdir -p /tmp/our/your/mine

5. One very interesting way to combine some related commands is with && or ; .

Code:

$ cd dir_name && ls -alr && cd ..