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I had a nightly cronjob start throwing errors about "inappropriate permissions..." rsync: [generator] failed to set permissions on "/data2/home/redacted/alsoredacted/opt/dell/srvadmin/var/log/open...
Why is libvkd3d1 not upgrading on my system? (lubuntu 20.04 LTS) When I run sudo apt update, apt flags libvkd3d1 and libvkd3d1:i386 as upgradable, but sudo apt upgrade does nothing and reports tha...
I vote against the merger. It's true that any LS question is likely to be on topic for PU, at least as I understand the scope of the latter, not being a participant in that community. However, I h...
The pager less(1) less(1) is the usual pager nowadays; you would do well learning to use it. It's also used for paging the manual pages, in most systems. The most common operation is searching,...
You can use rename for this. Many distributions package it; for example, it's apt-get install rename in Debian. In normal usage, it is used to apply an arbitrary regular expression substitution ex...
Is there a difference between these two tags? shell shell-scripting In a sense the first could be a bigger category. E.g. If someone wants to create a new shell, then they may have questions...
It depends on how much sensitive they are. I have three classes. 1) Very sensitive directories Partitions For my ~/.ssh/, ~/.password-store/, ~/.gnupg/, and ~/.abook/, I have a drive with 4 p...
An easy one-liner in POSIX-compatible shells: for f in *-min.jpg-*; do mv -- "$f" "${f%-*}"; done The only (mildly) tricky concept here is ${f%-*}, which expands to $f minus the shortest suffix...
You could try and convince Linux kernel maintainers, but they are reticent to that. I wonder what they'll do after POSIX.1-202x (Issue 8) possibly will forbid those. Maybe you could patch your ke...
How to apply a logical not to a shell command, e.g. in a Bash script? So if the command exited with 0 (success) I would like it to be changed to a non-zero value, and if it exited with a non-zero ...
You probably need to change the permissions on the file to make it executable. You can do that with chmod: chmod +x change-xkbmap.sh To verify, try running ./change-xkbmap.sh in a terminal with...
When viewing a message, press h. To return to the normal view, press h again. With typical viewer key bindings, h is bound to the display-toggle-weed function, which controls whether all headers a...
I wrote a filter program to overwrite each line with the next one. $ cat /usr/local/bin/ovr #!/bin/sh sed '2,$s/^/\x1B[1A\x1B[K/'; Here's the behavior: $ echo | ovr $ echo 'foo' | ovr ...
They are broadly analogous; there's a lot of cross-pollination of ideas between the projects. Some terminology first, because you'll notice that both columns have duplicate entries and this often ...
I've been persistently advocating for an analogous effort in the Software community, and generally think that any Codidact community could likely benefit from doing something similar. As a practica...
ip a command will conveniently show the addresses assigned to your network interfaces, but oftentimes this is not what the internet sees your machine as. So how to find your public IP address from...
How can I remap buttons on my mouse, especially for more exotic ones like MMO mice?
Init is starting all other processes. It's first process started by kernel. After that init uses init scripts to start all other needed functionality to boot up system, like mounting volumes, daem...
How to get the number of lines in a file? I.e. for a file like this: Line one Line 2 Final line I would like to do something like this: $ count-lines /path/to/the/file/above 3
For reasons of my own, I have services on my LAN which use HTTPS and I create my own certificates for these. Over the years, the usage of TLS has evolved considerably. Many features that were once...
I want to connect to my university network via OpenVPN under Fedora GNOME. I imported the openvpn configuration provided by the university in the Network Manager GUI and specified the user certifi...
xmllint from xmllib2 can do this: $ output-dirty-xml | xmllint --format - The dash in the end tells xmllint to read from stdin instead of a file. Source: manpage
I've been learning some Linux and I finally feel like I can find my way around the command line. But now I hear people say there are other, "non-POSIX" kinds of shell, with different semantics. Wha...
You want shuf. shuf -n1 -i 534-876874
In gpg(1), one normally adds recipients of an encrypted message with --recipient. Those recipients will be able to decrypt the message, and their key ID will appear unencrypted, so anyone will kno...
