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RetroTechGuy

Joined: 15 Dec 2009 Posts: 2303 Location: USA
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Posted: Thu 09 Dec 2010, 19:22 Post subject:
Re: double ampersand |
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| don570 wrote: | I think I learned about the double ampersand when
I read a book about Unix a couple of years ago.
Linux does things different obviously. |
I think I learned that under SunOS (erm...a couple decades ago)... Which also worked under Slackware, Debian, etc...
| Quote: | | When in Rome do as the Romans do. |
When incognito, do as the cognito do...
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don570

Joined: 10 Mar 2010 Posts: 2524 Location: Ontario
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Posted: Thu 09 Dec 2010, 21:31 Post subject:
double ampersand |
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I remember now . I was installing netbsd unix
on an old mac computer and I started
reading about unix.
Here's the reference
Visual Quickstart Guide
Unix Third Edition
by Deborah S. Ray and Eric J. Ray
| Code: | If you use && to combine commands,
the system will run both in sequence but
run the second only if the first succeeds.
For example, you could use
mv todolist todolist.done && touch todolist
to move your to-do list to a different file and
create a new to-do list. If the first command
fails (for example, because you don't have
permission to create a new file), the second
command won't run. |
With Puppy linux there isn't many permissions issues,
so nobody uses the double ampersand.
Now I understand the confusion.
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RetroTechGuy

Joined: 15 Dec 2009 Posts: 2303 Location: USA
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Posted: Fri 10 Dec 2010, 12:46 Post subject:
Re: double ampersand |
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| don570 wrote: | I remember now . I was installing netbsd unix
on an old mac computer and I started
reading about unix.
Here's the reference
Visual Quickstart Guide
Unix Third Edition
by Deborah S. Ray and Eric J. Ray
| Code: | If you use && to combine commands,
the system will run both in sequence but
run the second only if the first succeeds.
For example, you could use
mv todolist todolist.done && touch todolist
to move your to-do list to a different file and
create a new to-do list. If the first command
fails (for example, because you don't have
permission to create a new file), the second
command won't run. |
|
Aha! That's a valid reason to have such a command, in addition to ";" (which runs regardless)
I learned something new today! Thanks Don!
| Quote: | With Puppy linux there isn't many permissions issues,
so nobody uses the double ampersand.
Now I understand the confusion.
|
Well, most people don't even use the command line any more, so...
I guess that I was aware that "&&" also worked, but because "&" is a "special character", I avoided it. From the error standpoint, I find that ";" is more well behaved -- and when it doesn't work, it doesn't do exceptionally strange things -- like backgrounding jobs...
BTW, it rather looked like part of the problem was that characters we being "quoted" rather than being operators...
There's that whole goofy list of special characters, such as: "&" versus "\&" and what's the really goofy one..."\\\" which quotes "\" as a character (I _think_)? ("\" being the special character used for quoting, is difficult to "quote", so you have to "quote" it again...or is it twice more?)
Urgh!!!...
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jpeps
Joined: 31 May 2008 Posts: 2448
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Posted: Fri 10 Dec 2010, 14:54 Post subject:
Re: double ampersand |
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| RetroTechGuy wrote: | | don570 wrote: | I remember now . I was installing netbsd unix
on an old mac computer and I started
reading about unix.
Here's the reference
Visual Quickstart Guide
Unix Third Edition
by Deborah S. Ray and Eric J. Ray
| Code: | If you use && to combine commands,
the system will run both in sequence but
run the second only if the first succeeds.
For example, you could use
mv todolist todolist.done && touch todolist
to move your to-do list to a different file and
create a new to-do list. If the first command
fails (for example, because you don't have
permission to create a new file), the second
command won't run. |
|
Aha! That's a valid reason to have such a command, in addition to ";" (which runs regardless)
I learned something new today! Thanks Don!
|
| Quote: | With Puppy linux there isn't many permissions issues,
so nobody uses the double ampersand.
Now I understand the confusion.
|
Mostly I see "&&" used after after tests. If using ";" it's just a new line of code....quite different.
| Code: |
[ "$1" = "" ] && echo "no arguments here" && exit
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zigbert

Joined: 29 Mar 2006 Posts: 5290 Location: Valåmoen, Norway
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Posted: Sun 23 Jan 2011, 09:18 Post subject:
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Version 0.9-3
See main post
Changelog
- New parameters to manage Pschedule from external apps
--> -e : edit a already defined command
--> -s : run silent. Do not show main window.
This makes it possible to use the Pschedule editor in other apps. Will be used by Pmusic 1.6.0
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zigbert

Joined: 29 Mar 2006 Posts: 5290 Location: Valåmoen, Norway
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Posted: Tue 15 Feb 2011, 09:40 Post subject:
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Version 1.0
See main post
Changelog
- Faster startup
- Language support
- Reorganized main gui
- Different outfit for fields that user edits and those pSchedule edits.
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don570

Joined: 10 Mar 2010 Posts: 2524 Location: Ontario
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Posted: Tue 08 Mar 2011, 16:15 Post subject:
bad install in wary quickset 503 |
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There was a bad install of pschedule in wary quickset 503.
I've warned shinobar
http://www.murga-linux.com/puppy/viewtopic.php?p=502377#502377
To prevent this from happening again, it might be helpful to
change the .desktop file
| Code: |
[Desktop Entry]
Encoding=UTF-8
Name=Pschedule task on time
Icon=mini-clock.xpm
Comment=Pschedule task on time
Exec=/usr/local/pschedule/pschedule
Terminal=false
Type=Application
Categories=X-SystemSchedule
GenericName=Pschedule task on time |
I would suggest changing the line
Exec=/usr/local/pschedule/pschedule
to
| Code: |
Exec=/usr/local/bin/pschedule
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That will force users to install properly or it won't work at all.
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zigbert

Joined: 29 Mar 2006 Posts: 5290 Location: Valåmoen, Norway
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Posted: Sat 12 Mar 2011, 13:43 Post subject:
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done
Thanks
Sigmund
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zigbert

Joined: 29 Mar 2006 Posts: 5290 Location: Valåmoen, Norway
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Posted: Sun 20 Mar 2011, 04:13 Post subject:
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Version 1.0.1
See main post
Changelog
- Bugfix: Detect macrolanguage (fr, en..) when lang contains utf or similar post info.
- Bugfix: translation of 'task' and 'time' in editor (thanks to etiennep)
- Bugfix: Exec-path in .desktop file (thanks to don570)
- Bugfix: Troubles after unstalling NLS. (thanks to shinobar) --> see line 46 pmusic
- NLS_ Added: $Time
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don570

Joined: 10 Mar 2010 Posts: 2524 Location: Ontario
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Posted: Sat 02 Apr 2011, 14:30 Post subject:
pschedule 101 |
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Using lucid puppy 5.2.......
I couldn't get pschedule 1.0.1 to show in French
so I had to stick with pschedule 1.0
_______________________________
Also I recommend that you change the name of
'fr_ca:french' to 'fr:french'
This will make the application show in French
without the need to create a link.
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zigbert

Joined: 29 Mar 2006 Posts: 5290 Location: Valåmoen, Norway
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Posted: Sat 16 Apr 2011, 14:47 Post subject:
Re: pschedule 101 |
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| don570 wrote: | Using lucid puppy 5.2.......
I couldn't get pschedule 1.0.1 to show in French
so I had to stick with pschedule 1.0
_______________________________
Also I recommend that you change the name of
'fr_ca:french' to 'fr:french'
This will make the application show in French
without the need to create a link.
______________________________ | Got it - added to todo-list
Sigmund
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Geoffrey

Joined: 30 May 2010 Posts: 934 Location: Queensland Australia ɹǝpu∩uʍop
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Posted: Mon 25 Apr 2011, 18:55 Post subject:
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Thanks for this, one small problem, if I can call it that, the link buttons in the about box didn't work for me.
I added BROWSER="defaultbrowser" to the top of the pschedule script and that fixed it.
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zigbert

Joined: 29 Mar 2006 Posts: 5290 Location: Valåmoen, Norway
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Posted: Wed 27 Apr 2011, 15:17 Post subject:
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Geoffrey
Got it, thank you
Sigmund
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rodin.s
Joined: 22 Sep 2010 Posts: 327 Location: Ukraine
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Posted: Thu 02 Jun 2011, 14:36 Post subject:
APPDIR >> PROGPATH |
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Localization does not work. In /usr/local/pschedule/pschedule $APPDIR should be replaced with $PROGPATH.
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zigbert

Joined: 29 Mar 2006 Posts: 5290 Location: Valåmoen, Norway
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Posted: Fri 03 Jun 2011, 14:48 Post subject:
Re: APPDIR >> PROGPATH |
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| rodin.s wrote: | | Localization does not work. In /usr/local/pschedule/pschedule $APPDIR should be replaced with $PROGPATH. | Thank you. Don570 complained about this ages ago, and I have simply forgotten. Sorry.
Sigmund
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