Bash for loop

For loop in shell script

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

Loop bash

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 loop in shell script

for i in `seq 1 10`
do
	echo $i #Do something here.
done

Shell for file in directory

# Basic syntax:
for file in /directory/*
do
	echo $file
done
# Where:
#	- the echo command is run on each file found using the search pattern 
#		(here, all files in the /directory/ folder)

# Example usage:
# Say you have the directory "/my/favorite/files" with the following files:
test.txt
my.txt
code.png

for file in /my/favorite/files/*.txt; do
	echo $file
done
--> test.txt
--> my.txt
# Note, code.png isn't printed because it doesn't match the search pattern

Source: cyberciti.biz

Bash for loop

for FILE in $(ls -A); do la $FILE; done

Bash for loop step

for i in `seq 0 2 10`; do echo $i; done

Source: stackoverflow.com

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Shell/Bash