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ifs bash Code Example
bash if in terminal 
if [[ $- == *i* ]]; then
    do_interactive_stuff
fi
ifs bash 
IFS stands for "Internal Field Separator". 
It is used by the shell to determine how to do word splitting.
Source: unix.stackexchange.com
bash ifelse 
# you can use it if you want but it isn't very accurate
# as of best practices and such 

for DB in $( sudo mysql -e 'show databases' -s --skip-column-names ) ; 
	do 
		if [ $DB == 'information_schema' ] || [ $DB == 'performance_schema' ]; 
        	then echo 'warning' ; 
        else 
        	echo "success $DB";
        fi 
        
    done
linux bash if else 
if [[ condition ]]
then
  <execute command>
else
  <execute another command>
fi
Source: devconnected.com



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