假设我在bash中有以下代码：
#!/bin/bash
bad_fruit=( apple banana kiwi )
for fname in `ls`
do
# want to check if fname contains one of the bad_fruit
is_bad_fruit=??? # <------- fix this line
if [ is_bad_fruit ]
then
echo "$fname contains bad fruit in its name"
else
echo "$fname is ok"
fi
done
如何修复is_bad_fruit,如果fname包含bad_fruit字符串之一,则为true？
解决方法
请尝试以下代码：
#!/bin/bash
bad_fruit=( apple banana kiwi )
re="$(printf '%s\n' "${bad_fruit[@]}" | paste -sd '|')"
for fname in *; do
# want to check if fname contains one of the bad_fruit
if [[ $fname =~ $re ]]; then
echo "$fname contains bad fruit in its name"
else
echo "$fname is ok"
fi
done
ls是用于交互式查看文件信息的工具.它的输出格式化为人类,并将导致脚本中的错误.使用globs或代替.了解原因：http://mywiki.wooledge.org/ParsingLs
