Scripting help, copying files listed in a text file

[Captain_Quor]

Ok so I've got a text file with a list of .gz files, these .gz files are in various sub directories of one parent directory and I've hacked this little script together to copy them from their current location to a new one and spit out any it can't find to "/home/user/not_found" but for the life of me can't get it to run properly!

Any help would be greatly appreciated.

The shell script as it currently looks:

#!/bin/sh

source="/mnt/source_dir"
dest="/mnt/output_dir"
list="/home/user/file_list"

while read -r line
do
  file=`find "$source" -name "$line"`
  if [ -n "$file" ]
  then
    cp $file $dest
  else
    echo "$line" >> "/home/user/not_found"
  fi
done<$list

[scathefire]

what if it was:

if [ -z $file ]; then
echo $line >> /home/user/not_found
else
cp $file $dest
fi

[alf55]

Ok so I've got a text file with a list of .gz files, these .gz files are in various sub directories of one parent directory and I've hacked this little script together to copy them from their current location to a new one and spit out any it can't find to "/home/user/not_found" but for the life of me can't get it to run properly!

Any help would be greatly appreciated.

The shell script as it currently looks:

#!/bin/sh

source="/mnt/source_dir"
dest="/mnt/output_dir"
list="/home/user/file_list"

while read -r line
do
  file=`find "$source" -name "$line"`
  if [ -n "$file" ]
  then
    cp $file $dest
  else
    echo "$line" >> "/home/user/not_found"
  fi
done<$list

The

 -n "$file"

is testing if the string is not equal to ''.

#!/bin/sh

source="/mnt/source_dir"
dest="/mnt/output_dir"
list="/home/user/file_list"

while read -r line
do
  file=`find "$source" -name "$line"`
  if [ -f "$file" ] ;  then
    cp $file $dest
  else
    echo "$line" >> "/home/user/not_found"
  fi
done<$list

The

 -f "$file"

is testing if the file exits and is a regular file.

[majumder.pk]

Let's assume the parent directory is /folder

now in shell do like..

#for i in `find /folder -type f | grep .gz`; do cp -prf $i /path/to/destination_folder; done

[dmhunter]

Having defined list, now you need to read the contents of that file.
I know of two quick ways to do that:

1) exec 3<$list
while read -r line <&3
do
<stuff>
done

2) for line in `cat $list`
do
<stuff>
done

Both will work, but #2 has problems if there are spaces in the file names.
Also, #2 will blow up if the character count in the list file is large.

Good luck with your scripting.