linux shell 按行循环读入文件方法
#!/bin/bash
printf "*\n"
echo " cat file while read line"
cat one.log |while read line
do
echo $line;
done
printf "*\n"
echo "while read line <file"
while read line
do
echo $line;
done <one.log
printf "*\n"
echo "for line in cat test.txt"
SAVEIFS=$IFS
IFS=$(echo -en "\n")
for line in $(cat test.txt)
do
echo $line;
done
IFS=$SAVEIFS</pre>
前二种方法可以分别简化成一行简短的代码
cat one.log|while read line;do echo $line;done
while read line; do echo $line; done<one.log</pre>
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原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。