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Need to delete large set of files (i.e) close to 100K from a directory based on the input file

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Top Forums Shell Programming and Scripting Need to delete large set of files (i.e) close to 100K from a directory based on the input file
# 22  
Old 08-22-2012
Quote:
Originally Posted by Corona688
That would have been nice to know three pages ago...

Code:
while read ID
do
        echo "${ID}.jpg"
        echo "thumbnail/${ID}-tn.jpg"
done < inputfile | xargs 2> errlog

Thank you for the quick response and the deletions are happening as expected but error log capturing and the files which have been deleted are not getting captured as expected from the below script.

Code:
# Usage:  rm_list.sh list_file error_file  removed_file
#
while read ID
do
        [ -f "/photos/${ID}.jpg" ] && echo "/photos/${ID}.jpg"
        [ -f "/photos/thumbnail/${ID}-tn.jpg" ] && echo "/photos/thumbnail/${ID}-tn.jpg"
done < ID >list_file

if [ $# -ne 3 ]
then
   echo "Usage:"
   echo "   rm_list.sh list_file error_file removed_file"
   exit 1
fi
 
LIST=$1
ERR=$2
REM=$3
 
if ! [ -f $LIST ]
then
    echo "List file $LIST not found"
    exit 2
fi
 
xargs rm < $LIST 2> $ERR
nawk -F: 'NR==FNR{d[$1]++;next} !($0 in d)' $ERR $LIST > $REM

Thanks
Moderator's Comments:
Mod Comment Please view this code tag video for how to use code tags when posting code and data.
Last edited by Corona688; 08-22-2012 at 02:03 PM..
# 23  
Old 08-22-2012
You appear to have posted the code from the brief moment in time before I removed the [ -f filename ] && echo filename bits. You don't get missing file errors because it doesn't put missing files into the list in the first place.
# 24  
Old 08-22-2012
Quote:
Originally Posted by Corona688
You appear to have posted the code from the brief moment in time before I removed the [ -f filename ] && echo filename bits. You don't get missing file errors because it doesn't put missing files into the list in the first place.
Thank you for the update and so what can be done in order to log the errors, because when you are looking for the files from the below code, you definitely need an output file from which we can delete the files and at the same time we need an error file.

Code:
while read ID
do
        [ -f "/photos/${ID}.jpg" ] && echo "/photos/${ID}.jpg"
        [ -f "/photos/thumbnail/${ID}-tn.jpg" ] && echo "/photos/thumbnail/${ID}-tn.jpg"
done < ID >list_file

# 25  
Old 08-22-2012
You quoted my correct code in your post last time but didn't use it, use my correct code.
# 26  
Old 08-22-2012
Quote:
Originally Posted by Corona688
You quoted my correct code in your post last time but didn't use it, use my correct code.
Below code was going no where as it is just hanging for long times and i killed the script. Can you please let me know how can i capture error file as i am able to capture list_file.

Code:
# Usage:  rm_list.sh list_file error_file  removed_file
#
while read ID
do
       echo "/pictures/${ID}.jpg"
       echo "/pictures/thumbnail/${ID}-tn.jpg"
done >list_file 

if [ $# -ne 3 ]
then
   echo "Usage:"
   echo "   rm_list.sh list_file error_file removed_file"
   exit 1
fi
 
LIST=$1
ERR=$2
REM=$3
 
if ! [ -f $LIST ]
then
    echo "List file $LIST not found"
    exit 2
fi
 
xargs rm < $LIST 2> $ERR
nawk -F: 'NR==FNR{d[$1]++;next} !($0 in d)' $ERR $LIST > $REM

I am able to capture list_file from the below code:

Code:
while read ID
do
        [ -f "/photos/${ID}.jpg" ] && echo "/photos/${ID}.jpg"
        [ -f "/photos/thumbnail/${ID}-tn.jpg" ] && echo "/photos/thumbnail/${ID}-tn.jpg"
done < ID >list_file

---------- Post updated at 01:43 PM ---------- Previous update was at 01:27 PM ----------

Quote:
Originally Posted by Corona688
That would have been nice to know three pages ago...

Code:
while read ID
do
        echo "${ID}.jpg"
        echo "thumbnail/${ID}-tn.jpg"
done < inputfile | xargs 2> errlog

Btw when i am using this code with input file named ID which contains all 8 digit numbers and once the while loop is executed what is the file named inputfile from your command? if i execute the same script it says it cannot open input file.
# 27  
Old 08-22-2012
If you're reading ID's from standard input, leave <inputfile off.
# 28  
Old 08-22-2012
Quote:
Originally Posted by Corona688
If you're reading ID's from standard input, leave <inputfile off.
So how can i capture the list_file (i.e) files to be deleted and how to capture error_file (i.e) files not found based on ID file.

I can get the list_file (i.e) files to be deleted if i use the below code.

Code:
while read ID
do
        [ -f "/photos/${ID}.jpg" ] && echo "/photos/${ID}.jpg"
        [ -f "/photos/thumbnail/${ID}-tn.jpg" ] && echo "/photos/thumbnail/${ID}-tn.jpg"
done < ID >list_file

can you help me in order to get the error_file capture?
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