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Old 03-22-2010, 12:13 PM   #1
34973
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view command output

how i can see command output on dr800s??
i try use script run from sd card, witch redirect command output to file and store to sd card. But this doesn't work

this is the script:
# !/bin/bash
mkdir -p /media/mmcblk0p1/System/.test
ls -al / > /media/mmcblk0p1/System/.test/output.txt

can any one help me? I have a few cross complied application i don't know if it working or not
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Old 03-22-2010, 02:43 PM   #2
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Device: iRex iLiad, in love with iRex DR800S. Also a K4NT. Now a Kobo Aura
Quote:
Originally Posted by 34973 View Post
how i can see command output on dr800s??
i try use script run from sd card, witch redirect command output to file and store to sd card. But this doesn't work

this is the script:
# !/bin/bash
mkdir -p /media/mmcblk0p1/System/.test
ls -al / > /media/mmcblk0p1/System/.test/output.txt

can any one help me? I have a few cross complied application i don't know if it working or not
I was thinking this same problem a few days ago. There isn't an easy way to see the logs.
Maybe compile zenity or xdialog and create a program link which opens the output.

Other solution could be to create the output file on another not hidden directory (not inside a directory whose name starts with a dot) and open it as a normal document.

Anyway, if you are serious about creating software for DR800 you should use the environment and the emulator to test the programs. There is a virtual machine with the proper environment ready to run.
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Old 03-22-2010, 03:07 PM   #3
Mr. X
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Redirection does work, I uploaded a script that ran dmesg and a bunch of other commands in another thread. One thing to watch out for is filesystem write caching... In the emulator especially make sure to throw a 'sync' command in at the end or the writes never reach disk.

Also, remember that most standard commands are busybox not the normal unix variants... I'm not sure if mkdir supports -p for example... If you use the emulator you can ssh in and run your script and get useful feedback
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Old 03-23-2010, 09:18 PM   #4
34973
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Quote:
Originally Posted by Mr. X View Post
Redirection does work, I uploaded a script that ran dmesg and a bunch of other commands in another thread. One thing to watch out for is filesystem write caching... In the emulator especially make sure to throw a 'sync' command in at the end or the writes never reach disk.

Also, remember that most standard commands are busybox not the normal unix variants... I'm not sure if mkdir supports -p for example... If you use the emulator you can ssh in and run your script and get useful feedback
Can you please give me example how can i use redirection?
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Old 03-23-2010, 09:28 PM   #5
Mr. X
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The script attached to http://www.mobileread.com/forums/sho...&postcount=155 uses redirection
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Old 03-24-2010, 05:08 AM   #6
Iņigo
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Posts: 712
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Join Date: Feb 2008
Location: Here or there
Device: iRex iLiad, in love with iRex DR800S. Also a K4NT. Now a Kobo Aura
Quote:
Originally Posted by 34973 View Post
Can you please give me example how can i use redirection?
Look at the first message in this thread:
Code:
ls -al / > /media/mmcblk0p1/System/.test/output.txt
See the > char here? that redirects previous command (ls, list files, similar to dir command on MSDOS) output to a file.

Another example could be:
Code:
ls -al / > /media/mmcblk0p1/System/.test/output.txt 2>&1
that redirects both standard output and standard error to the file.

But note that if the destination file is inside a hidden directory (one that starts with a dot, as .test) you won't be able to navigate into it with the DR800, as the device don't show those folders.
Read the second message for other alternatives.
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Old 03-24-2010, 01:14 PM   #7
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Thanks! It work like charm!
Problem was mostly in editor what i used, script was good but in dos mod
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