linux shell 按行循环读入文件方法
linux-dash
A beautiful web dashboard for Linux
项目地址:https://gitcode.com/gh_mirrors/li/linux-dash
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linux shell 按行循环读入文件常用代码如下:
#/bin/bash
printf "*************************************\n"
echo " cat file whiel read line"
cat test.txt |while read line
do
echo $line;
done
printf "*************************************\n"
echo "while read line <file"
while read line
do
echo $line;
done <test.txt
printf "*************************************\n"
echo "for line in cat test.txt"
SAVEIFS=$IFS
IFS=$(echo -en "\n")
for line in $(cat test.txt)
do
echo $line;
done
IFS=$SAVEIFS
注意:for line in $(cat test.txt) 当文件中有空格或者tab 时,一定要设置一下IFS变量。
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