Shell Programming and Scripting

!/bin/ksh

FEED_DIR=~/tmp
ARCH_DIR=~/tmp/arch
CURR_DIR=~/tmp/curr

for file in $(ls -1 $FEED_DIR/File?_extract*)
do
    file_pfx=$(basename ${file%%_[0-9][0-9]*})

    echo $file_pfx

    [ -e $CURR_DIR/${file_pfx}* ] && mv $CURR_DIR/${file_pfx}* $ARCH_DIR

    mv ${file_pfx}* $CURR_DIR
done

#   Remove files that are 6 days or older, from the archive directory.

find $ARCH_DIR -name 'File?_extract*' -atime +6 -exec rm {} \;

for file in $(ls -1 $FEED_DIR/*.*)
do
    file_pfx=$(basename ${file%%_[0-9][0-9]*})

    echo $file_pfx

    [ -e $CURR_DIR/${file_pfx}* ] && mv $CURR_DIR/${file_pfx}* $ARCH_DIR

    mv ${file_pfx}*.* $CURR_DIR
done

#   Remove files that are 6 days or older, from the archive directory.

find $ARCH_DIR -name 'File?_extract*' -atime +6 -exec rm {} \;

#!/usr/bin/ksh
 
cd $CURRENT_DIR
 
ls *_[01][0-9][0-3][0-9]20[0-3][0-9].csv | sed '
  s/\(.*\)_\([01][0-9][0-3][0-9]\)20\([0-3][0-9]\)\.csv/\3\2 \1 &/
 ' | sort | while read xxkey file_base file
do
 if [ $file_base = "$last_file_base" ]
 then
  mv last_file $ARCHIVE_DIR # one at a time for simplicity
  while (( 6 < $(
               ls $ARCHIVE_DIR/${file_base}_[01][0-9][0-3][0-9]20[0-3][0-9].csv 2>/dev/null | wc -l
               ) ))
  do
    ls $ARCHIVE_DIR/${file_base}_[01][0-9][0-3][0-9]20[0-3][0-9].csv | sed '
      s/.*_\([01][0-9][0-3][0-9]\)20\([0-3][0-9]\)\.csv/\2\1 &/
     ' | sort | read y x
    rm -f $x
  done
 fi
 
 last_file=$file  last_file_base=$file_base
done