Shell Programming and Scripting

while read line
do
if [ -e "${line}" ]
then
rvst_capt_time= `ls -lrt $line | awk {'print$7'}`

fi
fi
done < file_list

#!/usr/bin/env bash

rvst_capt_time=-1
rvst_capt_file=""

while read line
do
if [ -e "${line}" ]
then
last_time=$(stat -c%Y "$line")
if (( last_time > rvst_capt_time)); then
  rvst_capt_time="$last_time"
  rvst_capt_file="$line"
fi
fi
done <file_list
printf "%s %s\n" "$rvst_capt_file" "$(stat -c%y $rvst_capt_file | sed 's/\..*$//')"

perl -lne'
  push @_, (stat)[9];
  print ~~localtime(
    (sort { $b <=> $a } @_)[0]
    ) if eof
  ' infile

stat -c%Y infile

stat -c%y infile