Preventing tar from using too much CPU and disk (old laptop crashes if 100%)
I want to backup 1 terabyte of data to an external disk.
Unix & Linux
tmux: shared session, one user in a pane, another in another pane, two different cursors
I’ve decided to try tmux: have been reading the docs and googling around, trying to find a way to have two users sharing a session, each with a different cursor.
Efficient in-place header removing for large files using sed?
The commands below may takes minutes depends on the file size. Is there any more effient method?
Why does a software package run just fine even when it is being upgraded?
Say I am running a software, and then I run package manager to upgrade the software, I notice that Linux does not bring down the running process for package upgrade – it is still running fine. How does Linux do this?
Why does the ‘bin’ user need a login shell?
During an audit of /var/log/auth.log on one of my public webservers, I found this:
How to recursively remove execute permissions from files without touching folders?
I made a backup to an NTFS drive, and well, this backup really proved necessary. However, the NTFS drive messed up permissions. I’d like to restore them to normal w/o manually fixing each and every file.
How to check if any IP address is present in a file using shell scripting?
I have a script that generates some output. I want to check that output for any IP address like
Simple sed replacement of tabs mysteriously failing
This ought to be really simple, but for some reason it is not working:
What is the proper way to manage multiple python versions?
I have a machine with Python 2.6 installed as the default Python. Then, I installed Python 2.7, and manually created /usr/bin/python as a symlink to the new installation.
How to manipulate a CSV file with sed or awk?
How can I do the following to a CSV file using sed or awk?