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I completed the code:

#!/bin/sh

# Code is POSIX compliant

tput clear

currentDate="$(date -R)"


counter=0

for word in $currentDate
do

# We ignore the day of the week.
if [...

I am new to shell programming, here is what I did.


#!/bin/sh

# Code is POSIX compliant


currentDate="$(date -R)"


counter=0

for word in $currentDate
do

# We ignore the day of...

Welcome.



The first thing I would try encountering that error message is relaunch the command without the _ and / or consult the man page. Having said that, I'm afraid that your date will...

Everything my dear colleague RudiC said applies, but also, just to show you that posting your stuff is a rewarding activity:



Under NO circumstances you should use backticks any more! If you...

check LOCALE value for cal format, try:

date=$(date +"%d %m %Y")
#date="8 2 2019"

echo $date | read tday x

past_days="3,4,5"
max_past_day="${past_days##*,}"

echo "$date" | awk '
{
...