{"tags":[{"tag":"textarea","content":"#!\/bin\/bash\nfor i in {1..5}\ndo\n echo \"Welcome $i times\"\ndone","code_language":"whatever"}]}

#!/bin/bash
# A simple bash "for loop" example below...
# This loop will run 4 times, and will echo the number in sequence as it goes.
# 3 is increment size
# Mind the double . between the {}
# Note how the variable is called with the $ prefix, which can be done within the "" quotes!
for i in {1..12..3}
do echo "This is loop number $i"
done
# Result :
# This is loop number 1
# This is loop number 4
# This is loop number 7
# This is loop number 10

for ((i = 1; i <= 10 ; i++)); do echo $i
done

years=(2018 2019)
days=(74 274)
for year in "${years[@]}"; do for day in $(seq -w ${days[0]} ${days[1]}); do echo $year echo $day done
done

for i in {1..10} ; do ... ; done

#!bin/bash
for i in {1..5}
do   echo i:$i
done

for VARIABLE in file1 file2 file3
do	command1 on $VARIABLE	command2	commandN
done

Use for in bash for iterating words in a string or values in an array as:
for value in {1, 2, 3}; do echo $value; done
for value in $(cat arguments_files.txt); do [some_command]; done
And use while for iterating lines from a pipe output as:
cat arguments_file.txt | while read line; do [some_command]; done

#!/bin/bash
for i in {1..5};
do echo $i
done

while [ <some test> ]
do
<commands>
done