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Shell Programming and Scripting

Repeat command with new variable for each line in txt file

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# 22  
Old 05-28-2013
and data.
This User Gave Thanks to DGPickett For This Post:
Corona688
# 23  
Old 05-29-2013
The code itself looks like this:
Code:
while read x 
do
  find /var/mobile/Applications -maxdepth 2 -name "$x" >> /var/mobile/z_renapps/"$x".sh
  sed -i "s|$x|iTunesMetadata.plist|g" /var/mobile/z_renapps/"$x".sh
  sed -i "s|/var|sudo cp /var|g" /var/mobile/z_renapps/"$x".sh
  echo "/Applications/RenApple.app/0Metadata/09240920.plist" >> /var/mobile/z_renapps/"$x".sh
  sed -i "s|09240920|$x|g" /var/mobile/z_renapps/"$x".sh
  sed -i ':a;N;$!ba;s/\n/\t/g' /var/mobile/z_renapps/"$x".sh
  sed -i "s|plist /|plist /|g" /var/mobile/z_renapps/"$x".sh
done < /Applications/RenApple.app/applist.txt

The lines in the text file (that is being read)
Quote:
line1
line2
....
line52
The problem is I KNOW that the last line is not processed, because even if the find command is not executed properly, there will still be the creation of the .sh file at least.
Due to that file missing I'm absolutely sure that this line was skipped/whatever.
# 24  
Old 05-29-2013
Just for the fun of it, please show us the output from the command:
Code:
tail -c10 /Applications/RenApple.app/applist.txt

With the results you're reporting, I'm guessing that the display for last three characters in the file will not be:
Code:
   5   2  \n

My guess is that that file is not a text file because the last character in it is not a <newline>.

The while read loop in current versions of both ksh and bash will not report reading an incomplete line.
# 25  
Old 05-30-2013
Try using'od' or 'cat vte' to view the file so you can see all characters and linefeeds. As each line is processed, something locks it up. A missing linefeed at EOF may mess up many text tools.
# 26  
Old 05-30-2013
You said in post #19 it stops AFTER 52 lines. So - what be line 53 in your data?
# 27  
Old 06-04-2013
Quote:
Originally Posted by DGPickett
Try using'od' or 'cat vte' to view the file so you can see all characters and linefeeds. As each line is processed, something locks it up. A missing linefeed at EOF may mess up many text tools.
It is always the last line that will be swallowed

For example, I should have exactly the same amount of .sh files created as I have lines (due to repeating the script as often as I have lines.

Is there no way to force the script to read all lines/check if they are correct beforehand.

The text file like I said looks like this:

Code:
LINE1
LINE2
...
...
LINE52
LINE53

I'm positive that there is no newline after the last entry.
However due to quite some amount of editors messing this up.
Is there a way to remove the newline before executing the command that repeats itself to make sure this is not the cause for the lock up ?

Thanks in advance as always !
Last edited by pasc; 06-04-2013 at 06:04 PM..
# 28  
Old 06-05-2013
Text files should, but often do not, end in a line-feed. The simplest solution is:
Code:
$ ( cat input_file ; echo ) | while read ....

You might need do loop code to reject empty lines in case there is a final linefeed.
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