Read file content line by line in shell
1. Introduction to Grammar
#！/bin/bash
<<EOF
shell 中逐行读取文件内容的语法如下所示。
这里虽然很简单，但是再配合上其他的工具，如sed,awk,tr等可以获取到很多信息，因此使用起来特别方便
EOF
while read LINE
do
#记录行数
let count++
#打印行号及其内容
echo "$count $LINE"
done < $File_name
The method of reading files in shell scripts is much more convenient than other languages, which is one of the reasons why I suddenly like shell scripts. It's really easy to use. Using shell scripts can do more with less.
2. Examples
Examples are as follows:
#########################################################################
# File Name: readFileLineByLine.sh
# Author: sun
# mail: [email protected]
# Created Time: 2020年03月01日 星期日 10时38分14秒
#########################################################################
#!/bin/bash
if [ $# -ne 1 ];
then
echo "Usage : $0 File_name"
exit
fi
#获取文件名
File_name=$1
count=0
while read LINE
do
#记录行数
let count++
#打印行号及其内容
echo "$count $LINE"
done < $File_name
#打印读取的行数
echo "Total $count lines read from ${File_name}."
#换行符不好使？？？？？
echo "\n\n\n\n\n\n\n\n"
#退出
exit 0
