<![CDATA[Reposium : Your Best Source of Unix/Linux Lossages]]>https://www.reposium.com/https://www.reposium.com/favicon.pngReposium : Your Best Source of Unix/Linux Lossageshttps://www.reposium.com/Ghost 4.48Thu, 23 Apr 2026 12:35:24 GMT60<![CDATA[Ubuntu resolvconf version 18 vs. version 20 and above]]>https://www.reposium.com/ubuntu-resolvconf-version-18-vs-version-20-and-above/60e8e5e0c846f706630946f6Sat, 10 Jul 2021 00:15:40 GMTSo far, so good :

< file is the Right Thing to do

What the fuck happened here ?

Why use cat ? WTF ?
]]><![CDATA[Touch usage]]>file because you read all the manual pages except the sh one.]]>https://www.reposium.com/touch-usage/60e78d0dc846f706630946ccThu, 08 Jul 2021 23:55:35 GMT$ touch --help Usage: touch [OPTION]... FILE... Update the access and modification times of each FILE to the current time. A FILE argument that does not exist is created empty, unless -c or -h is supplied. A FILE argument string of - is handled specially and causes touch to change the times of the file associated with standard output. Mandatory arguments to long options are mandatory for short options too. -a change only the access time -c, --no-create do not create any files -d, --date=STRING parse STRING and use it instead of current time -f (ignored)

Each command should have at least one -something ignored option. I'm sure it could be useful, like adding some External Qi to the process.

]]><![CDATA[Timestamps]]>[ 26.591782] r8169 0000:01:00.0 eno1: Link is Down [ 29.294702] r8169 0000:01:00.0 eno1: Link is Up - 1Gbps/Full - flow control rx/tx [ 30.349719] r8169 0000:01:00.0 eno1: Link is Down [ 32.893091] r8169 0000:01:00.0 eno1: Link]]>https://www.reposium.com/timestamps/60cea238cd87220056ec562bSun, 20 Jun 2021 03:05:23 GMT[ 26.591782] r8169 0000:01:00.0 eno1: Link is Down [ 29.294702] r8169 0000:01:00.0 eno1: Link is Up - 1Gbps/Full - flow control rx/tx [ 30.349719] r8169 0000:01:00.0 eno1: Link is Down [ 32.893091] r8169 0000:01:00.0 eno1: Link is Up - 100Mbps/Full - flow control rx/tx [ 998.390898] r8169 0000:01:00.0 eno1: Link is Down [ 1001.135252] r8169 0000:01:00.0 eno1: Link is Up - 1Gbps/Full - flow control rx/tx [10836.232993] perf: interrupt took too long (2531 > 2500), lowering kernel.perf_event_max_sample_rate to 79000 [11023.138708] perf: interrupt took too long (3190 > 3163), lowering kernel.perf_event_max_sample_rate to 62500 [16354.623694] perf: interrupt took too long (4074 > 3987), lowering kernel.perf_event_max_sample_rate to 49000 [23632.485435] r8169 0000:01:00.0 eno1: Link is Down [23635.994023] r8169 0000:01:00.0 eno1: Link is Up - 1Gbps/Full - flow control rx/tx [24918.607722] perf: interrupt took too long (5111 > 5092), lowering kernel.perf_event_max_sample_rate to 39000 [39178.379137] perf: interrupt took too long (6414 > 6388), lowering kernel.perf_event_max_sample_rate to 31000

Who decided that it was a clever idea to display the timestamps with this format ?

In an answer on StackExchange, some guy introduced the acronym HRST for Human Readable Time Stamp, just to use it once and also probably with the hope to impress the reader.

]]><![CDATA[IBM too ?]]>
IBM UUOC

Source : https://developer.ibm.com/articles/au-unixtext/

]]>https://www.reposium.com/ibm-too/60c81825cd87220056ec5531Tue, 15 Jun 2021 03:03:08 GMT
IBM UUOC

Source : https://developer.ibm.com/articles/au-unixtext/

]]><![CDATA[Why be wrong only once ?]]>When you can give 2 bad examples in a manual page ?

col1(1)                                                            byobu                                                            col1(1)

NAME
       col1 .. col9, NF - awk and print a column (based on the name of the program, 1-9)

SYNOPSIS
       col1 [SEPARATOR]
...
EXAMPLES
...
       Instead of:
        cat /etc/passwd | awk -F":" '{print $7}
]]>https://www.reposium.com/rtfm/60c4dc5ecd87220056ec5509Sat, 12 Jun 2021 16:16:59 GMTWhen you can give 2 bad examples in a manual page ?

col1(1)                                                            byobu                                                            col1(1)

NAME
       col1 .. col9, NF - awk and print a column (based on the name of the program, 1-9)

SYNOPSIS
       col1 [SEPARATOR]
...
EXAMPLES
...
       Instead of:
        cat /etc/passwd | awk -F":" '{print $7}'

       You can just do:
        cat /etc/passwd | col7 :
]]><![CDATA[NUT]]>https://www.reposium.com/nut/60c2bf56cd87220056ec547bFri, 11 Jun 2021 03:25:34 GMTLet's have a look at the manual entry for the command upsd of the NUT package :

NAME
       upsd - UPS information server

SYNOPSIS
       upsd -h

       upsd [OPTIONS]

...
OPTIONS
       -h
           Display the help text.

Ok, let's try it.

# upsd
# echo $?
1
# upsd -h
# echo $?
1

: after editing nut.conf
# upsd -h
Network UPS Tools upsd 2.7.4
Network server for UPS data.
...
# echo $?
0

I guess if there is a parse error in upsd.conf they call exit(1); directly.

Why not print ANY error message ?

]]><![CDATA[who is god]]>https://www.reposium.com/who-is-god/60c182c9cd87220056ec545cThu, 10 Jun 2021 03:15:23 GMT$ who is god slt pts/0 2021-06-10 00:23 (192.168.0.2) $ who 1 2 slt pts/0 2021-06-10 00:23 (192.168.0.2) $ who --help ... Usage: who [OPTION]... [ FILE | ARG1 ARG2 ] If ARG1 ARG2 given, -m presumed: 'am i' or 'mom likes' are usual.who is god

And this is like this since at least BSD.

]]><![CDATA[cat cat cat is more >]]>https://www.reposium.com/cat-is-more/60c16216002115bf9d8afec0Thu, 10 Jun 2021 00:53:21 GMT

Great examples from https://www.tecmint.com/13-basic-cat-command-examples-in-linux/, the use of cat to pipe to the more or less commands. Why type more song.txt ?

cat cat cat is more >

Wait, there is another great example :

cat cat cat is more >

So much better than one cat !

Also, remember, cat command allows us to redirect output in terminals or files. I didn't know that was specific to cat.

]]><![CDATA[First post]]>Unix is evil.

]]>https://www.reposium.com/first-post/60c150c7002115bf9d8afe94Wed, 09 Jun 2021 23:40:37 GMT

Unix is evil.

]]>