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。

GitHub 加速计划 / li / linux-dash
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A beautiful web dashboard for Linux
最近提交(Master分支:2 个月前 )
186a802e added ecosystem file for PM2 4 年前
5def40a3 Add host customization support for the NodeJS version 4 年前
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