[bash] bash shell nested for loop

#!/bin/bash
# loop*figures.bash

for i in 1 2 3 4 5  # First loop.
do
    for j in $(seq 1 $i)
    do
        echo  -n "*" 
    done
    echo 
done
echo
# outputs
# *
# **
# ***
# ****
# *****

for i in 5 4 3 2 1 # First loop.
do
    for j in $(seq -$i -1)
    do
        echo  -n "*" 
    done
    echo 
done

# outputs
# *****
# ****
# ***
# **
# *

for i in 1 2 3 4 5  # First loop.
do
    for k in $(seq -5 -$i)
    do
        echo -n ' '
    done
    for j in $(seq 1 $i)
    do
        echo  -n "* " 
    done
    echo 
done
echo

# outputs
#     * 
#    * * 
#   * * * 
#  * * * * 
# * * * * * 

for i in 1 2 3 4 5  # First loop.
do
    for j in $(seq -5 -$i)
    do
        echo  -n "* " 
    done
    echo 
    for k in $(seq 1 $i)
    do
        echo -n ' '
    done
done
echo

# outputs
# * * * * * 
#  * * * * 
#   * * * 
#    * * 
#     *


exit 0

Examples related to bash

• Comparing a variable with a string python not working when redirecting from bash script • Zipping a file in bash fails • How do I prevent Conda from activating the base environment by default? • Get first line of a shell command's output • Fixing a systemd service 203/EXEC failure (no such file or directory) • /bin/sh: apt-get: not found • VSCode Change Default Terminal • Run bash command on jenkins pipeline • How to check if the docker engine and a docker container are running? • How to switch Python versions in Terminal?

Examples related to shell

• Comparing a variable with a string python not working when redirecting from bash script • Get first line of a shell command's output • How to run shell script file using nodejs? • Run bash command on jenkins pipeline • Way to create multiline comments in Bash? • How to do multiline shell script in Ansible • How to check if a file exists in a shell script • How to check if an environment variable exists and get its value? • Curl to return http status code along with the response • docker entrypoint running bash script gets "permission denied"

Examples related to nested-loops

• Single Line Nested For Loops • How to break out of nested loops? • Breaking/exit nested for in vb.net • bash shell nested for loop • Iterate Multi-Dimensional Array with Nested Foreach Statement • How to break nested loops in JavaScript? • Can I use break to exit multiple nested 'for' loops? • How do I break out of nested loops in Java? • Breaking out of nested loops • Breaking out of a nested loop