I have a script that reminds me to restart my computer if
I realize it isn't the most elegant script but I am trying!
#!/bin/bash
My crontab entry for this script is:
So it runs at 14:46hrs daily...
So... I am thinking it should run, unless I didn't something really silly. Also, do you think it's ok to move this bash script to
Answer:
uptime
is more than, say 3 days (although its set to 0 days now just to check
if the script is running as my computer has been up only over a day..). I realize it isn't the most elegant script but I am trying!
#!/bin/bash
up=$(uptime | grep "day" > /home/dnaneet/uptime.foo && awk < /home/dnaneet/uptime.foo '{ print $3 }')
[[ $up -gt 0 ]] && xmessage -center "Restart!"
I have made it executable by chmod + x checkup.sh
and it works fine when I run it fro the terminal via ./checkup.sh
My crontab entry for this script is:
46 14 * * * /home/dnaneet/Desktop/./checkup.sh
So it runs at 14:46hrs daily...
So... I am thinking it should run, unless I didn't something really silly. Also, do you think it's ok to move this bash script to
/bin
?Answer:
One thing at a time:
First let's give you a user based bin folder:
You want to use crontab. Let's start with something really simple:
Okay, so that works
Now let's try running a script that does the same
No you don't need a ./ in the middle of the line. ./ is for when you are giving relative urls.
Okay, so that works
Now let's try running a script that calls xmessage
not working
First we need to not depend on environment variables. This includes path setting, x11 settings, or anything else(python and ruby environment variables come to mind...)
Let's make ours look a bit like anacron's proper cron file..I saved this as test
On to the script
We changed all the commands not to depend on paths we didn't explicitly set
We ran our script explicitly with bash
We told the script that we expect to be on DISPLAY :0.0
First let's give you a user based bin folder:
cd ~/ && mkdir bin
You want to use crontab. Let's start with something really simple:
* * * * * touch /tmp/testing.txt
Okay, so that works
Now let's try running a script that does the same
* * * * * /home/username/bin/touchtest.sh
to run once a minute until you get it workingNo you don't need a ./ in the middle of the line. ./ is for when you are giving relative urls.
Okay, so that works
Now let's try running a script that calls xmessage
* * * * * /home/username/bin/rebootwarn.sh
not working
First we need to not depend on environment variables. This includes path setting, x11 settings, or anything else(python and ruby environment variables come to mind...)
Let's make ours look a bit like anacron's proper cron file..I saved this as test
#Borrowed from anacron SHELL=/bin/sh PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin #End borrowed from anacron * * * * * /bin/bash /home/username/bin/test.shSet to run once a minute
crontab test
to import itOn to the script
#!/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
export DISPLAY=:0.0
up=$(uptime | grep "day" > /home/dnaneet/uptime.foo && awk < /home/dnaneet/uptime.foo '{ print $3 }')
[[ $up -gt 0 ]] && xmessage -center "Restart!"`
Okay, so that works...what did we do?We changed all the commands not to depend on paths we didn't explicitly set
We ran our script explicitly with bash
We told the script that we expect to be on DISPLAY :0.0
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