我有 shell 脚本，但是当我在 Ubuntu 上运行它时，出现错误：
arithmetic expression expecting primary.
问题出在主程序中，尤其是nbLigne.
这是代码：
#!/bin/sh
MotAuHasard()
{
nbr=$(($RANDOM*$RANDOM%$nbLigne)) #définit la position du mot dans listemot.txt
Mot=$(head -$nbr $FichierMot | tail -n 1) #mot trouvé dans monFichier
#la fonction suivante vérifie si le mot est supérieur à 6 caractères,
#dans le cas contraire, on ré-initialise la fonction
nbcarac1=${#Mot}
if [ $nbcarac1 -lt 6 ]
then
MotAuHasard
fi
}
Affiche()
{
MotJeu=$Mot
nbcarac2=${#cache}
for i in `seq 0 $nbcarac2`;
do MotJeu=${MotJeu//${cache:i:1}/-}
done
}
Decouvre()
{
cache=${cache//$caractere/"_"}
}
testPresence()
{
testPresence=1
for i in `seq 0 $nbcarac1`;
do
if [ "${Mot:i:1}" = "$caractere" ]
then
testPresence=0
fi
done
}
testGagne()
{
testGagne=0
for i in `seq 0 $nbcarac1`;
do
if [ "${MotJeu:i:1}" = "-" ]
then
testGagne=1
fi
done
}
#affichage du pendu selon le nombre de vies restantes
vie_pendu()
{
case $vie in
"0")
echo "_______________"
echo " | | "
echo " | O "
echo " | /|\ "
echo " | | "
echo " | / \ "
echo " | "
echo " | "
echo " | "
echo " |---|";;
"1")
echo "_______________"
echo " | | "
echo " | O "
echo " | /|\ "
echo " | | "
echo " | / "
echo " | "
echo " | "
echo " | "
echo " |---|";;
"2")
echo "_______________"
echo " | | "
echo " | O "
echo " | /|\ "
echo " | | "
echo " | "
echo " | "
echo " | "
echo " | "
echo " |---|";;
"3")
echo "_______________"
echo " | | "
echo " | O "
echo " | /|\ "
echo " | "
echo " | "
echo " | "
echo " | "
echo " | "
echo " |---|";;
"4")
echo "_______________"
echo " | | "
echo " | O "
echo " | / "
echo " | "
echo " | "
echo " | "
echo " | "
echo " | "
echo " |---|";;
"5")
echo "_______________"
echo " | | "
echo " | O "
echo " | "
echo " | "
echo " | "
echo " | "
echo " | "
echo " | "
echo " |---|";;
"6")
echo "_______________"
echo " | "
echo " | "
echo " | "
echo " | "
echo " | "
echo " | "
echo " | "
echo " | "
echo " |---|";;
esac
}
#main
FichierMot='listemot.txt'
nbLigne=$(wc -l < $FichierMot) #On récupère le nombre de lignes dans FichierMot
cache="abcdefghijklmnopqrstuvwxyz" #On affiche toutes les lettres disponibles
MotAuHasard #Lancement du jeu
vie=7 #initialisation du nombre de vies
Affiche
while [ $vie -gt 0 ]
do
echo $MotJeu
echo " "
echo "Possibiite de lettres restantes : $cache"
echo " "
echo "Veuillez entrer une lettre: "
echo " "
read caractere
while [ ${#caractere} -gt 1 ]
do
echo "Plus d'une lettre saisie !!"
read caractere
done
Decouvre
testPresence
Affiche
if [ $testPresence -eq 0 ]
then
testGagne
if [ $testGagne -eq 0 ]
then
echo "Felicitation, vous avez gagne !!"
exit
fi
else
vie=$(($vie - 1))
vie_pendu
fi
done
echo "Pas de chance, le mot était : $Mot"
谢谢您的帮助！