What is the difference between internal command and external command in Linux?

I have a script that when I execute it, it doesn't do anything, however when I execute source (script) it works! In example - ./program # does not work source program # does work Why is this? The program only exports the PS1 env variable to change my...

Hi, i recently installed Linux Ubuntu, and its great, but i have a small problem. Every time i start up my laptop, the backlight does not come on automatically. To get it to come on, i have to "blindly" log in to my account, and then press...

Hello folks, I had linux mint julia installed on my computer the other day and I am a complete newbie to linux. I'm still trying to find my way around linux as I have been used to windows xp. I'm wondering how you get to this command line-as I want to...

I am very new in Linux. I installed fedora in Virtual Box with host windows xp. I want to share file between host and guest. Someone suggest me to run the command in fedora #sudo mount -t vboxsf -o uid=1000,gid=1000 F_DRIVE /home/menjar/Desktop/xp where...

I'm trying to learn linux kernel programming and i have this book called "The Linux Kernel Module programming Guide" its for the 2.6 kernel. Now when i get to section 2.2 where i have to compile the kernel module it wants me to use the obj...

In linux Shell Command i want to : 1)Make a A directory create four text files a, b, c and d, each containing ID of one of our group member : for example for text file ID is a : 6678 , for b : 6679, for C :6680 2)Find all files in my home directory...