Dashes in printf
I’m trying to use printf to format some pretty output in a bash script
Unix & Linux
How do you copy the public key to a ssh-server?
Here is what I have tried, and I got an error:
How does this Makefile makes C program without even specifying a compiler?
I was using a Makefile from the book “Advanced Linux Programming (2001)” [code]. It was strange for me to see that GNU make does compile the code correctly, without even specifying a compiler in the Makefile. It’s like baking without any recipe!
In CentOS, what is the difference between yum update and yum upgrade?
What is the difference between yum update and yum upgrade, and when should I use one over the other?
Splitting string by the first occurrence of a delimiter
I have a string in the next format
How to access the history on the fly in Unix?
For example, if I do a
Showing only “interesting” mount points / filtering non interesting types
I used mount to show mounted drives, I don’t want to see the not so interesting ones (i.e. non-physical). So I used to have a script mnt that did:
alternative to “netstat -s”
netstat -s prints out a lot of very detailed protocol statistics like number of TCP reset messages received or number of ICMP “echo request” messages sent or number of packets dropped because of a missing route.
How do I find the offset of an ext4 filesystem?
I have a failing hard drive that is unable to write or read the first sectors of the disk. It just gives I/O errors and that is all there is. There are other areas on the disk that seem (mostly) fine.
I am trying to mount a partition (ext4) and see if I can access some files I would like to recover. Since the mount command supports an offset option, I should be able to mount the filesystem even though the partition table is unreadable and unwriteable. The problem is how to find the offset. None of the ext4 tools seems to have this particular feature.