#!/bin/bash
# Must be at least version 4 to have associative arrays
#check if $1 exists
if [ ! -e "$1" ]; then
echo "[error] \"$1\" is not found. terminated"
exit 1
fi
#check if student_photo exists
if [ ! -d student_photo ]; then
echo "[error] \"student_photo/\" not found. terminated"
exit 2
fi
#move the files, creating directory if necessary
while read line
do
#commented echo "[$line]"
ary=($line)
# associative array sid
declare -A sid
# check existance in associative array
if [ ${sid[${ary[1]}]+_} ]; then
echo "[Error] Duplicate sid ${ary[1]}. no changes will be done"
exit 1
else
sid["${ary[1]}"]=1
fi
done < $1
#move the files, creating directory if necessary
while read line
do
#commented echo "[$line]"
ary=($line)
printf "\"%s\" to \"%s(%s)\"..." ${ary[0]} ${ary[1]} ${ary[2]}
#echo "\"${ary[0]}\" to \"${ary[1]}(${ary[2]})\""
#DSC00XX.jpg 05432198 1234
if ! [ -e "student_photo/${ary[0]}" ]; then
printf "\n[error] \"%s\" is not found or is duplicated. skipped\n" ${ary[0]}
elif ! [[ ${ary[1]} =~ ^[0-9]{8}$ ]]; then
printf "\n[error] \"%s\" is not a valid student number (8 digits). skipped\n" ${ary[1]}
elif ! [[ ${ary[2]} =~ ^[0-9]{4}$ ]]; then
printf "\n[error] \"%s\" is not a valid programme code (4 digits). skipped\n" ${ary[2]}
else
if [ ! -d "student_photo/${ary[2]}" ]; then
mkdir "student_photo/${ary[2]}"
printf "\ncreated folder: %s\n" ${ary[2]}
fi
if [ ! -e "student_photo/${ary[2]}/${ary[1]}" ]; then
mv "student_photo/${ary[0]}" "student_photo/${ary[2]}/${ary[1]}.jpg"
fi
printf "done\n"
fi
#echo ---
done < $1
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