On 2013-09-14, Cecil Westerhof <
Ce...@decebal.nl> wrote:
> Op zaterdag 14 sep 2013 08:11 CEST schreef Jasen Betts:
>
>> On 2013-09-13, Cecil Westerhof <
Ce...@decebal.nl> wrote:
>>> I wrote a BASH function to generate an UUID:
>>>
http://tinyurl.com/BASHScripting
>>>
>>> I know that there is uuidgen, but it is also about the exercise.
>>
>> Doesn't work.
>
> What does not work?
>
"What?" is the main problem:
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About the BASH (Nederlands) Group
This group is for people who could use or give help using the BASH shell. There will be interesting scripts and a handy library with functions will be developed.
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Cecil W.
How to start the Bash Open Source project. Manager's Choice
Cecil W.
Senior Software Engineer
I have been thinking to put my Bash functions in an Open Source library. Properly on GitHub. I would like to get some input in how to...
18 days ago
Cecil W.
What would you like to see covered in this group? Manager's Choice
Cecil W.
Senior Software Engineer
To serve the group optimal, it would be nice to know what the members find useful to be treated. So reply on this message with what you...
3 months ago
Popular
Cecil W.
Nicely formatted list of postscript functions.
Cecil W.
Senior Software Engineer
One of the things I am also busy with is postscript programming. Before a function there is a comment in the following format:
% input parameters 2 spaces function name 2 spaces output parameters
It is very handy to have a nicely formatted ...
decebal.nl decebal.nl
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1 month ago
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Cecil W.
Cecil W. " I always use capitals for variables that are read-only. ... "
14 days ago
Chris J.
Chris J. " I very rarely use all caps for variable names. All except one of of BASH's own variables are all caps; there is too great a chance of a ... "
9 days ago
Chris J.
Chris J. " Avoid the "Advanced" Bash Scripting Guide like the plague. It is full of misinformation, bad practices and outright errors. "
9 days ago
Cecil W.
What would you like to see covered in this group?
Cecil W.
Senior Software Engineer
To serve the group optimal, it would be nice to know what the members find useful to be treated.
So reply on this message with what you are dying for to get help for, or just would like to know.
And if someone mentions a subject you find ...
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3 months ago
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Cecil W.
Cecil W. " Nederland should be deleted, but that is not possible: you can only change things one time. :-( Maybe I should contact LinkedIn again. ... "
16 days ago
Valentin B.
Valentin B. " The use of #sh would only be useful on legacy systems of course. Writing #sh means making the code as portable as possible which will run ... "
15 days ago
Cecil W.
Cecil W. " Ah, okay. I thought you mend something else beside portability. ... "
15 days ago
Cecil W.
Fetch From Youtube
Cecil W.
Senior Software Engineer
You can download video's from YouTube with youtube-dl. I wrote a script
around it to make it easier/smoother.
# Needed
# - External programs
# - youtube-dl
function fetchFromYouTube {
local -r COMMAND=youtube-dl
...
decebal.nl decebal.nl
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26 days ago
Cecil W., Valentin B. like this
Valentin B.
Valentin B. " Hi Cecil, ... "
25 days ago
Valentin B.
Valentin B. " @Cecil, btw why are you storing the 'youtube-dl' command in a variable? I personally don't see the benefit doing so. Any particular reason? "
25 days ago
Cecil W.
Cecil W. " ... "
25 days ago
Cecil W.
When to use an alias and when a function?
Cecil W.
Senior Software Engineer
I always use an alias for simple things that do not need parameters. For example:
alias census='who | wc -l'
When is it better to use an alias and when a function? Or is it mostly about what your preferences are?
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1 month ago
Chris J.
Chris J. " As the bash man page says: ... "
25 days ago
Cecil W.
Cecil W. " ... "
25 days ago
Cecil W.
Getting a Random Number.
Cecil W.
Senior Software Engineer
You can get a random number with ${RANDOM}. But I find there are a few
shortcomings in this:
- The randomness is not very good.
- It only uses 15 bits.
That is why I wrote a function which uses /dev/urandom and generates a
32 bits ...
decebal.nl decebal.nl
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27 days ago
Cecil W., James C. like this
Cecil W.
Get MAC Address.
Cecil W.
Senior Software Engineer
Sometimes you want to have the MAC address of your network card(s).
Therefore I made this little alias. For every network card it displays
the interface name with the corresponding MAC address. Nothing fancy,
but useful nevertheless I ...
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1 month ago
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Cecil W.
Cecil W. " ... "
1 month ago
Cecil W.
Cecil W. " ... "
1 month ago
Cecil W.
Cecil W. " ... "
1 month ago
Cecil W.
Sharing code on GitHub?
Cecil W.
Senior Software Engineer
I could share code on GitHub. Would that be handy?
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3 months ago
Fikri R.
Fikri R. " Very, I could learn one thing or an other. ... "
3 months ago
Cecil W.
Hoeveel mails zijn er gisteren verstuurd?
Cecil W.
Senior Software Engineer
Door op te nemen in je crontab:
15 0 * * * echo "Er zijn op $(date --date='-1 days' '+\%F') $(grep "^$(date --date='-1 days' '+\%b \%_d').* postfix/smtp\[.* status=sent" /var/log/mail | wc -l) emails ...
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November 12, 2011
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Cecil W.
Cecil W. " @Frank Ik probeer vandaag nog naar die andere twee mogelijkheden te kijken. "
December 3, 2011
Pascal V.
Pascal V. " interessant :) dergelijke informatie via bash ophalen is nais! de bash-groep inspireert voor meer experimenteren met bash! tnx! "
April 2, 2012
Cecil W.
Cecil W. " Leuk dat het een inspiratie was. Indien je problemen of oplossingen hebt: post ze hier. "
April 3, 2012
Cecil W.
Waarom krijg ik teveel open bestanden als ik code in een functie stop?
Cecil W.
Senior Software Engineer
Ik heb de volgende code:
#!/usr/bin/env bash
set -o errexit
set -o nounset
declare LOOP_STEPS=2000
declare -r REQUIRED_STRING="required time"
declare day
declare -i end
declare i
declare ...
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December 3, 2011
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Oscar R.
Oscar R. " @Frank, ... "
December 7, 2011
Oscar R.
Oscar R. " Gloeiende... ik had bovenstaande bericht nog flink ge-edit. Gooit Linked-in dat weg met een "Sorry, er ging iets fout-melding". En natuurlijk ... "
December 7, 2011
Frank I.
Frank I. " @Oscar Ik vond het bericht dat je schreef verhelderend, dus dank je wel. Ik ga dit later nog een keer lezen, want ergens valt het kwartje nog ... "
December 8, 2011
Cecil W.
Meerdere waardes krijgen uit een subshell
Cecil W.
Senior Software Engineer
In een bepaald script heb ik de minuten, seconden en dag in de maand
nodig. Oorspronkelijk deed ik dit met:
temp=$(date '+%M %S %d')
minutes=${temp:0:2}
seconds=${temp:3:2}
day=${temp:6:2}
Echter een veel duidelijkere manier ...
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December 3, 2011
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Cecil W.
Cecil W. " Daar is niets mis mee. ;-} Dat zouden meer mensen moeten doen. ... "
December 6, 2011
Frank I.
Frank I. " misschien omdat het spawnen van een subshell intensiever is dan string manipulatie. ... "
December 6, 2011
Cecil W.
Cecil W. " Maar ik doe in beide gevallen $(date '+%M %S %d'). ... "
December 6, 2011
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About this Group
Created: July 19, 2009
Type: Professional Group
Members: 72
Owner: Cecil W.
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