Overhead of using loop-mounted images under Linux
Is there a CPU/RAM overhead associated with using loop-mounted images versus using a physical partition under Linux?
Unix & Linux
ssh server: reasons for sudden “Connection closed by remote host”
One of my ec2 servers has stopped receiving ssh connections. The OS is Ubuntu server 8.04, and the ssh server is the standard openssh-server.
Backup of LVM2 logical volume
I’d like to make backup on external drive of LVM2 logical volume in dd manner.
Can I get SSD rw performance while keeing data security if I combine SSD & HDD in btrfs RAID1
I have 2 storage devices; classical slow HDD (750GB, /dev/sda) and faster SSD (128GB, /dev/sdb). Currently I have installed Ubuntu & Mint on same btrfs partition on SSD (/dev/sdb5). My btrfs pool consists of /dev/sdb5.
Upstart on Debian?
I created an upstart script in Ubuntu, thinking it would be the same for Debian. But Debian doesn’t have a /etc/init folder that Ubuntu has. I went to the upstart download page and seeing that they have packages, did a apt-get install upstart, but it asks to remove sysvinit, which I know will/might screw up my system. So how do I make my Ubuntu script work on Debian?
Directory with +x permission, parents without it. When would this be useful?
Say I have a folder called folder in the following path:
tee stdout to stderr?
I’d like to send stdout from one process to the stdin of another process, but also to the console. Sending stdout to stdout+stderr, for instance.
Why does this BSD grep result differ from GNU grep?
My computer is running macOS 10.12.3 and I am using the system-installed grep utility with version 2.5.1-FreeBSD.
How is the order in which tar works on files determined?
$ touch dir/{{1..8},{a..p}} $ tar cJvf file.tar.xz dir/ dir/ dir/o dir/k dir/b dir/3 dir/1 dir/i dir/7 dir/4 dir/e dir/a dir/g dir/2 dir/d dir/5 dir/8 dir/c dir/n dir/f dir/h dir/6 dir/l dir/m dir/j dir/p I would have expected it to be alphabetical. But apparently it’s not. What’s the formula, here? Answers: Thank you for visiting the … Read more
How to create alias for ssh command?
I have a command, which looks like so: