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[Solved] Delete files with condition

 
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# 1  
Old 05-31-2012
[Solved] Delete files with condition
I have a directory containing thousands of items “video files”, these items were generated by an application, which generates two items with the same name but with different extensions “.avi and .mp4”. There was a tool in my application to remove one item @ a time. Later I found this tool removes item with one extension “.avi” the other file “.mp4” remains.
I want to remove the items .mp4 after checking that the items .avi is not exist.
Thank you in advance
# 2  
Old 05-31-2012
Try this:
Code:
#!/bin/ksh

ls *.mp4|while read line
do
  print "Checking [$line] ... \c"
  if [[ -f "${line%.mp4}.avi" ]]; then
    print ".avi exists"
  else
    print "No matching .avi, deleting $line"
    # remove the comment after validating
    #rm -f "$line"
  fi
done

exit 0

Last edited by gary_w; 05-31-2012 at 12:07 PM.. Reason: double-quote variables
# 3  
Old 05-31-2012
I may have misunderstood your requirements, but what's wrong with this bash "one" liner:

Code:
for i in directory/with/videos/files/*.mp4;do if [ ! -e ${i%.mp4}.avi ] ; then rm $i;fi;done

Or more explicitly:
Code:
for i in directory/with/videos/files/*.mp4;do # work through all mp4 files
   if [ ! -e "${i%.mp4}.avi" ] ; then # if no matching avi file exists
      rm "$i" # delete the mp4 file
   fi
done

Last edited by Skrynesaver; 05-31-2012 at 01:00 PM.. Reason: Quoted filename variables in the light of Scrutinizer's very valid observation.
This User Gave Thanks to Skrynesaver For This Post:
awadeid
# 4  
Old 05-31-2012
Note: Double quotes around variable references, will ensure that file names with spaces do get processed properly..
This User Gave Thanks to Scrutinizer For This Post:
Skrynesaver
# 5  
Old 05-31-2012
Doh, good catch. I updated my example.
# 6  
Old 05-31-2012
many thanks for your help

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