Can the init process be a shell script in Linux?
I was going through a tutorial on setting up a custom initramfs where it states:
linux
iotop showing 1.5 MB/s of disk write, but all programs have 0.00 B/s
I don’t understand iotop output: it shows ~1.5 MB/s of disk write (top right), but all programs have 0.00 B/s. Why?
Shared library mappings in /proc/pid/maps
Why does /proc/pid/maps contain a few records for the same library ? Here is an example:
How to map ataX.0 identifiers in kern.log error messages to actual /dev/sdY devices?
Consider following kern.log snippet:
extract Embedded initramfs
I have a kernel in which one initramfs is embedded.
I want to extract it.
How to prevent a process from writing files
I want to run a command on Linux in a way that it cannot create or open any files to write. It should still be able to read files as normal (so an empty chroot is not an option), and still be able to write to files already open (especially stdout).
How to make exported shell variables permanent?
export LD_PRELOAD=/usr/lib/libtsocks.so It’s ok that I can export in this way, but how can I make it permanent? I want LD_PRELOAD to still be changed after a reboot. I’m using Ubuntu and Fedora Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the … Read more
Using ddrescue to retrieve data off a failing ntfs disk
I am attempting to save some user data of a disk that has failed in a Window 8 computer. I’ve removed the HDD that was unable to be read by the Windows 8 laptop, plugged into my OS X machine which can see the partitions but cannot mount them. (ntfs-3g cannot either).
Temporarily change time
I need to test aspects of my software that only happen at certain times of the day. Rather than waiting whole days (and getting here at 2:00 AM), I’d like to change the time.
What’s the progress regarding improving system performance/responsiveness during high disk I/O?
Whenever there is high disk I/O, the system tends to be much slower and less responsive than usual. What’s the progress on Linux kernel regarding this? Is this problem actively being worked on?