小时代5-perl跳过首行读取文件

如何跳过文件首行读取文件呢?我们可以使用readline来实现,打开文件后,首先readline,然后再使用while继续读取文件的其他行进行处理。这种方法比较适合同时处理多个文件的场景,具体的实现方式如下:

    #!/usr/bin/perl
    open( READ, "<$file" );
    readline READ; # skip the first line
    while (<READ>) {
    ...
    }
    close READ;

当然如果有其他更好的方法,也可以在这里一起讨论一下
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时间: 2024-10-05 14:00:02

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【Python】按行读取文件、IOError: [Errno 22] invalid mode (&#39;a+&#39;) or filename,处理文件的换行符

Python一次性读取文件的所有内容在<[Python]文件读写操作>(点击打开链接)中已经说明过的,但有些时候,需要对文件中的每一行进行处理. 比如有一个f:\1.txt如下: 此时,如果要按行读取这个文件,可以直接利用Pyhon的for循环来读取,其中for的对象是这个文件指针,代码如下: file_path="f:\\a.txt" fp=open(file_path,"a+"); for eachline in fp: print eachline

Shell按行读取文件的3种方法

Shell按行读取文件的方法有很多,下面写出三种方法: 写法一: #!/bin/bash #描述: # while循环读行操作 #作者:孤舟点点 #版本:1.0 #创建时间:2017-11-09 04:08:52 PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin export PATH while read line do echo $line done < filename(待读取的文件) 写法二: