Bash for loop

Example:

 for i in {1..5}
 do
   echo "Welcome $i times"
 done

portable for loop (for older bash versions)

for i in `seq 10`
do
   echo "the i is $i"
done

for VARIABLE in 1 2 3 4 5 .. N
do

command1 command2 commandN

done

OR

for VARIABLE in file1 file2 file3
do

command1 on $VARIABLE command2 commandN

done

OR

for OUTPUT in $(Linux-Or-Unix-Command-Here)
do

command1 on $OUTPUT command2 on $OUTPUT commandN

done