第二其他如果stament不正常工作

Question

我的第二个“其他如果”不起作用。如果文件不存在，我无法下载文件。我不知道我在这里做错了什么。

#!/bin/bash 
# upper case 
file_upper_case=/root/MASTER.txt 
# lower case 
file_lower_case=/root/master.txt 

if [ -e "$file_upper_case" ]; then 
    echo "File is upper-case" 
    echo "Changed to lower_case" 
    mv $file_upper_case $file_lower_case 
    chmod 664 $file_lower_case 
    chown root.dba $file_lower_case 

else if [ -e "$file_lower_case" ]; then 
    echo "File is lower_case" 
    echo "Change permission only" 
    chmod 664 $file_lower_case 
    chmod root.dba $file_lower_case 

else if [ -e "$file_lower_case"]; then 
    echo "File does not exist" 
    echo "Create master.txt file" 
    # Download master.txt file 
    wget --no-check-certificate https://github.com/userid/bin/raw/master.txt -P /root 
    chmod 664 /root/master.txt 
    chown root.dba /root/master.txt 
fi; fi 

Answer 1

你可能想这（测试）：

#!/bin/bash 

file_upper_case=/root/MASTER.txt 
file_lower_case=/root/master.txt 

if [ -e "$file_upper_case" ]; then 
    echo "File is upper-case" 
    echo "Changed to lower_case" 
    mv $file_upper_case $file_lower_case 
    chmod 664 $file_lower_case 
    chown root.dba $file_lower_case 
elif [ -e "$file_lower_case" ]; then 
    echo "File is lower_case" 
    echo "Change permission only" 
    chmod 664 $file_lower_case 
    chmod root.dba $file_lower_case 
else 
    echo "File does not exist" 
    echo "Create master.txt file" 
    # Download master.txt file 
    wget --no-check-certificate https://github.com/userid/bin/raw/master.txt -P /root 
    chmod 664 /root/master.txt 
    chown root.dba /root/master.txt 
fi 

Answer 2

可以使用elif而不是else if。此外，你错过了最后一个条件的空间。