Raspberry Pi Forums

Pete6

I have a for do done loop and I'd like to get the output onto a set of bash variables similar to out[1], out[2], out[3] and so on. How may I achieve this please? A google search keeps showing me complex answers often related to array BUT, the output always seems to end up as $out. I need to use the ...

Pete6

Hehe. Yes I do. Well spotted. I do not think that is my problem. I am trying another tack right now that may do the trick.

Pete6

Thank you. Thank worked for some parts of my script. I have posted the entire script here The problem is right at the end in the section contained between the two lines # ******************************************************************************* # Setup the Latitude and Longitude of your site #...

Pete6

Having trouble adding seconds + or - to epoch times. I need to be able to adjust some timings and I have a variable which is a number that I input iin minutes. I then multiply this by 60 and add it to an existing epoch time. newtime = ( epochtime + mynum ) is what I am trying to do. I have tried jus...

Pete6

This was (and still is) a file permission problem. I resolved it by simply copying my video file into the /var/www/html directory. Now it plays perfectly everytime. I do not like this solution but as yet have not had time to ascertain the correct file permission needed in the video file's directory....

Pete6

I seem to be asking an awful lot of question in this forum lately. I am going through a very steep (and enjoyable) learning curve. I have built an astronomy AllSky camera using a Pi3B and Pi Cam 2 with a wide angle lens. It is working well and I am nearing the end of my little project. You can see i...

Pete6

It seems to have been working all along. The problem was that cron resolved the -$(date +"%s") int a single epoch time. This meant it was copying the same file over and over. I have now put the command into a bash script and cron now runs that. It works.

Pete6

A good idea. Thanks. It did not make it work in cron although it still works either from the command line or in a shell script.

It now looks like this.

Code: Select all

*/2 * * * * /bin/cp -a /run/shm/webcam.jpg /home/allsky/pics/webcam-$(date +"%s").jpg

Pete6

My cron job does not work. It is supposed to run every two minutes and to copy and rename a single files from one directory to another, */2 * * * * /bin/cp -a /run/shm/webcam.jpg "/home/allsky/pics/webcam-$(date +"%s").jpg" I have a number of cron jobs that are working and I am puzzled as to why thi...

Pete6

I spent all day writing and fixing code. It now works. I need to leave it to run for a couple of days to make sure it is stable. I have a reboot at 4AM daily So I shall just wait and see but it looks very good so far.

Thanks you for your idea. It worked.

Pete6

Thank you very much. It now works as advertised. I am sorry I got the code samples mixed up. Having a senior moment there I think.

Pete6

Thank you. I would never have found that. AS I said, I picked this code up from here https://github.com/xillwillx/DS18B20 The same code is on a number of other sites too. I guess they all copied each other. Question: Can it be fixed. If so could you fix it please? If you would like to see my little ...

Pete6

I have no idea Dougie. I installed php, php-cgi and php-gd and it worked. To support the DS18B20 I just used the files from here https://github.com/xillwillx/DS18B20 which I incorporated into the webcam page that I got here https://www.dronkert.net/rpi/webcam.html . Please point me to the file where...

Pete6

I have a problem with a php webpage on my Pi. The code below read a DS18B20 and diplays it in an image on a webpage. It all works fine until the temperature goes negative in C. Then php refuses to display the temperature. The code displays Unable to get temperature so I added $celsius = -1; $fahrenh...

Pete6

Charlotte is a nice place to live. I have been here for 6+ years. We moved here 'cuz our son moved here with his job. We are both retired and... "I love your British accent." Ashville is a great place. It's about 2 hours away. Meanwhile, I am making progress. I am not a programmer although I am seem...

Pete6

Yes, using sunwait to output a crontab will probably work. The nice thing about doing that would be that each time cron restarted (re-ran) the job it would output a new crontab file. I could even do a daily, 4AM reboot. I'll give it a go unless a demon coder shows up with another solution. Thank you.

Pete6

I have built an astronomy AllSky camera. I based it on https://www.dronkert.net/rpi/webcam.html original files and with advice from here and some personal hacking it is working and has remained stable for a few days. My original thread is here https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=...

Pete6

Thanks Dougie, will do.

Pete6

Thank you to all who helped me make my astronomy AllSky Camera work. It has now been running and stable for a couple of days. I took it to my astronomy club and compared it with two other quite expensive devices. Mine is not as good but it showed up fairly well nonetheless. I can see stars down to m...

Pete6

@jojopi, I just re-read your comment about the Raspberry Pi camera. I am using the Pi-cam with an 8 Mega Pixel with Sony IMX219 CMOS image sensor and a 185 degrees lens. This is clearly not up with my ZWO astro camera but then the price was a little different too. I can detect stars down to just bel...

Pete6

Thank you both very much. I am making good progress here. My AllSky camera has not fallen over for nearly 24 hours which is progrees indeed. @GlowInTheDark The arithmetic syntax worked and multipication now abounds. I think that you are right. I am pushing my luck with a bash script. Learning Python...

Pete6

That worked much better. Thank you. I am really a very bad programmer. However I am slowly moving from worse to bad if you see what I mean. I am now trying to multiply two things together. All it does is to allow the user to enter offsets in minutes rather than seconds. AstroDawnSec=AstroDawnMin * 6...

Pete6

Well the first part worked great. Thanks again. Now my if statement is broken # Time in Linux Epoch seconds and apply any adjustments # Astronomical Dawn Twilight date --date="$1" +%s aRise=$date echo $aRise # Sunrise date --date="$3" +%s sRise=$date echo $sRise # Sunset date --date="$4" +%s sSet=$d...

Pete6

Wow! Just like that. Amazing. It works perfectly.

Thank you both.

Pete6

I have a text file called "times" 05:37, 19:37 07:00, 18:14 The numbers refer to astronomical twilight for dawn and dusk (top line) and sunrise and sunset the lower line. How can I get these into four separate variables in a bash script please. aRise aSet sRise sSet would be ideal names to use for t...

Search found 88 matches

Bash subscripted variable output from for do done loop

Re: Adding seconds to epoch times

Re: Adding seconds to epoch times

Adding seconds to epoch times

Re: Mp4 and avi videos not playing in client browser

Mp4 and avi videos not playing in client browser

Re: cron job not working

Re: cron job not working

cron job not working

Re: Updating Sunrise, Sunset and Twilight in a service job

Re: PHP not reading DS18B20 below 0C. Bash working

Re: PHP not reading DS18B20 below 0C. Bash working

Re: PHP not reading DS18B20 below 0C. Bash working

PHP not reading DS18B20 below 0C. Bash working

Re: Updating Sunrise, Sunset and Twilight in a service job

Re: Updating Sunrise, Sunset and Twilight in a service job

Updating Sunrise, Sunset and Twilight in a service job

Re: Reading variables from a text file into Bash variables

Re: Reading variables from a text file into Bash variables

Re: Reading variables from a text file into Bash variables

Re: Reading variables from a text file into Bash variables

Re: Reading variables from a text file into Bash variables

Re: Reading variables from a text file into Bash variables

Re: Reading variables from a text file into Bash variables

Reading variables from a text file into Bash variables