jybaek

cur=$(date +%m) # Need not be described

next6=$(printf %02d $(echo $(($cur+6))%12 | bc))
# 1. $(($cur+6)) is same 'expr' command. result is 7
# 2. echo 7%12 | bc  result '7' (remainder)
# 3. printf %02d => 01, 02, 03 ... 
# 4. $next6 => current month + 6
# 5. My mistake, if $next6 is 0 => change 1  (if [ $next6 == 0 ];then next6=1;fi)
# 6. END

jybaek

#!/bin/sh

AA="My name is oops"
BB="name"
    
if [[ "$AA" == *"name"* ]];then
    echo "1st find it"
fi  
    
if [[ "$AA" =~ "name" ]];then

jybaek

<?php
// 출처 : https://blog.whitehatsec.com/magic-hashes/
if (hash('md5','240610708',false) == '0') {
  print "Matched.\n";
}
if ('0e462097431906509019562988736854' == '0') {
  print "Matched.\n";
}
?>

jybaek

#!/bin/sh

echo "================="
echo "\$@ section"
echo "================="
for param in "$@"
do
	echo $param,
done