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Posts by Quasímodo‭

33 posts
75%
+4 −0
Q&A Make Less use a normal view instead of hexdump view

Less does not display data files normally, but if it were some sort of Xxd. $ bash --norc $ export LESS= $ file -i /var/log/lastlog /var/log/lastlog: application/octet-stream; charset=binary $...

1 answer  ·  posted 2y ago by Quasímodo‭  ·  edited 2y ago by Quasímodo‭

Question less
83%
+8 −0
Q&A In a bash shell script, how to filter the command line argument list to unique entries only, for processing each?

Bash Here Bash's associative arrays come handy. The idea is to put every argument as a key in a separate array, and then only process arguments that are not keys to that array. #!/bin/bash decla...

posted 2y ago by Quasímodo‭  ·  edited 2y ago by Quasímodo‭

Answer
77%
+5 −0
Q&A How to figure out the licenses of files installed from packages?

The Debian Administrator's Handbook: The Inner Workings of the Debian Project: Documentation for each package is stored in /usr/share/doc/package/. (...) The copyright file includes information ...

posted 2y ago by Quasímodo‭

Answer
66%
+2 −0
Q&A With a V4L2-compatible webcam, how to see its video feed for the purpose of adjusting aiming?

I routinely use MPV for that. mpv --profile=low-latency --untimed av://v4l2:/dev/video0 You may need to try other devices, as listed by ls /dev/video*. Thanks to Canina for suggesting the two ...

posted 2y ago by Quasímodo‭  ·  edited 2y ago by Quasímodo‭

Answer
60%
+1 −0
Q&A What are IUSE flags?

IUSE flags are simply the list of available and default USE flags for a package as defined by the Ebuild maintainer. Definition IUSE is defined from a developer's perspective in man 5 ebuild (...

posted 2y ago by Quasímodo‭

Answer
60%
+1 −0
Q&A What are IUSE flags?

Every Gentoo user knows USE flags. Occasionally I stumble upon IUSE flags, for example, man emerge mention them in the description of an option: --newuse, -N ... USE flags may be toggled by yo...

1 answer  ·  posted 2y ago by Quasímodo‭  ·  edited 2y ago by Quasímodo‭

Question gentoo
71%
+3 −0
Q&A What does `emerge --update --newuse --deep @world` have to do with package removal?

In Debian-based distributions, one can update the system with apt upgrade and cleanup unused dependencies with apt autoremove. Period. On Gentoo that is apparently not as straightforward. From G...

0 answers  ·  posted 2y ago by Quasímodo‭  ·  last activity 9mo ago by Mithical‭

71%
+3 −0
Q&A Why does the file command fail to recognize non-text files as such?

POSIX defines Text file as A file that contains characters organized into zero or more lines. The lines do not contain NUL characters and none can exceed {LINE_MAX} bytes in length, inclu...

2 answers  ·  posted 3y ago by Quasímodo‭  ·  last activity 3y ago by LawrenceC‭

Question posix file