Les conditions

@joekakone

Joseph Konka @joekakone

03/03/2026 · 3 min

cli bash programmation

La clause IF#

#!/bin/bash

printf "Enter your name: "
read NAME
echo "Hello $NAME !"
printf "Please, enter a number: "
read NUMBER

if (( "$NUMBER" < "0" )); then
    echo "$NUMBER is negative !"
elif (( "$NUMBER" == "0" )); then
    echo "$NUMBER is null !"
else
    echo "$NUMBER is positive !"
fi

La clause IF..ELSE#

#!/bin/bash

printf "Enter your name: "
read NAME
echo "Hello $NAME !"
printf "Please, enter a number: "
read NUMBER

if (( "$NUMBER" < "0" )); then
    echo "$NUMBER is negative !"
elif (( "$NUMBER" == "0" )); then
    echo "$NUMBER is null !"
else
    echo "$NUMBER is positive !"
fi

La clause IF..ELIF..ELSE#

#!/bin/bash

printf "Enter your name: "
read NAME
echo "Hello $NAME !"
printf "Please, enter a number: "
read NUMBER

if (( "$NUMBER" < "0" )); then
    echo "$NUMBER is negative !"
elif (( "$NUMBER" == "0" )); then
    echo "$NUMBER is null !"
else
    echo "$NUMBER is positive !"
fi

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