cut: |: 没有那个文件或目录

Question

while read line
    do
        echo $line
        calendar_date=$(cut -d\  -f1 $line)
            hr_of_day=$(cut -d\  -f2 $line)
        echo "date: $calendar_date hr: $hr_of_day"

done < $FILE

我收到以下错误：

date:  hr:
2011-06-30 | 23
cut: 2011-06-30: No such file or directory
cut: |: No such file or directory
cut: 23: No such file or directory

Answer 1

cut将$line参数理解为文件名。如果你的 shell 是 bash，你可以使用<<<here-word：

cut -d' ' -f1 <<< "$line"

但是，不需要调用外部命令，bash 可以通过参数替换来实现：

date=${line%|*}  # Delete from | to the right.
hour=${line#*|}  # Delete up to |.