bash循環跳過註釋行

Question

我正在循環遍歷文件中的行。我只需要跳過以「＃」開頭的行。 我該怎麼做？

#!/bin/sh 

while read line; do 
    if ["$line doesn't start with #"];then 
    echo "line"; 
    fi 
done < /tmp/myfile 

感謝您的幫助！

Answer 1

while read line; do 
    case "$line" in \#*) continue ;; esac 
    ... 
done < /tmp/my/input 

坦率地說，然而，它往往是更清晰的轉向grep：

grep -v '^#' < /tmp/myfile | { while read line; ...; done; }