Merge pull request #3281 from strugglingyouth/master

翻译完成20150827 Linux or UNIX--Bash Read a File Line By Line.md

translated/tech/20150827 Linux or UNIX--Bash Read a File Line By Line.md

@@ -1,19 +1,19 @@
-translation by strugglingyouth
-Linux/UNIX: Bash Read a File Line By Line
+
+Linux/UNIX: Bash 下如何逐行读取一个文件
 ================================================================================
-How do I read a file line by line under a Linux or UNIX-like system using KSH or BASH shell?
+ 在 Linux 或类 UNIX 系统下如何使用 KSH 或 BASH shell 逐行读取一个文件？
 
-You can use while..do..done bash loop to read file line by line on a Linux, OSX, *BSD, or Unix-like system.
+在 Linux, OSX, * BSD ,或者类 Unix 系统下你可以使用​​while..do..done bash 的循环来逐行读取一个文件。
 
-**Syntax to read file line by line on a Bash Unix & Linux shell:**
+**在 Bash Unix 或者 Linux shell 中逐行读取一个文件的语法:**
 
-1. The syntax is as follows for bash, ksh, zsh, and all other shells -
+1.对于 bash, ksh, zsh,和其他的 shells 语法如下 - 
 1. while read -r line; do COMMAND; done < input.file
-1. The -r option passed to red command prevents backslash escapes from being interpreted.
-1. Add IFS= option before read command to prevent leading/trailing whitespace from being trimmed -
+1.通过 -r 选项传递给红色的命令阻止反斜杠被解释。
+1.在 read 命令之前添加 IFS= option，来防止 leading/trailing 尾随的空白字符被分割 - 
 1. while IFS= read -r line; do COMMAND_on $line; done < input.file
 
-Here is more human readable syntax for you:
+这是更适合人类阅读的语法:
 
     #!/bin/bash
     input="/path/to/txt/file"
@@ -22,9 +22,9 @@ Here is more human readable syntax for you:
       echo "$var"
     done < "$input"
 
-**Examples**
+**示例**
 
-Here are some examples:
+下面是一些例子:
 
     #!/bin/ksh
     file="/home/vivek/data.txt"
@@ -34,7 +34,7 @@ Here are some examples:
     	echo "$line"
     done <"$file"
 
-The same example using bash shell:
+在 bash shell 中相同的例子:
 
     #!/bin/bash
     file="/home/vivek/data.txt"
@@ -44,7 +44,7 @@ The same example using bash shell:
     	printf '%s\n' "$line"
     done <"$file"
 
-You can also read field wise:
+你还可以看看这个更好的:
 
     #!/bin/bash
     file="/etc/passwd"
@@ -54,15 +54,15 @@ You can also read field wise:
             printf 'Username: %s, Shell: %s, Home Dir: %s\n' "$f1" "$f7" "$f6"
     done <"$file"
 
-Sample outputs:
+示例输出:
 
 ![Fig.01: Bash shell scripting- read file line by line demo outputs](http://s0.cyberciti.org/uploads/faq/2011/01/Bash-Scripting-Read-File-line-by-line-demo.jpg)
 
-Fig.01: Bash shell scripting- read file line by line demo outputs
+图01：Bash shell scripting- 读取文件并逐行输出文件
 
-**Bash Scripting: Read text file line-by-line to create pdf files**
+**Bash Scripting: 逐行读取文本文件并创建为 pdf 文件**
 
-My input file is as follows (faq.txt):
+我的输入文件如下（faq.txt）:
 
     4|http://www.cyberciti.biz/faq/mysql-user-creation/|Mysql User Creation: Setting Up a New MySQL User Account
     4096|http://www.cyberciti.biz/faq/ksh-korn-shell/|What is UNIX / Linux Korn Shell?
@@ -75,7 +75,7 @@ My input file is as follows (faq.txt):
     8292|http://www.cyberciti.biz/faq/mounting-harddisks-in-freebsd-with-mount-command/|FreeBSD: Mount Hard Drive / Disk Command
     8190|http://www.cyberciti.biz/faq/rebooting-solaris-unix-server/|Reboot a Solaris UNIX System
 
-My bash script:
+我的 bash script:
 
     #!/bin/bash
     # Usage: Create pdf files from input (wrapper script)
@@ -106,15 +106,16 @@ My bash script:
         done <"$_db"
     fi
  
-**Tip: Read from bash variable**
+**提示：从 bash 的变量开始读取**
 
-Let us say you want a list of all installed php packages on a Debian or Ubuntu Linux, enter:
+让我们看看如何在 Debian 或者 Ubuntu Linux 下列出所有安装过的 php 包，请输入：
+
+    # 我将输出内容赋值到一个变量名为$list中 #
 
-    # My input source is the contents of a variable called $list #
     list=$(dpkg --list php\* | awk '/ii/{print $2}')
     printf '%s\n' "$list"
 
-Sample outputs:
+示例输出:
 
     php-pear
     php5-cli
@@ -127,7 +128,7 @@ Sample outputs:
     php5-readline
     php5-suhosin-extension
 
-You can now read from $list and install the package:
+你现在可以从 $list 中看到安装的包：
 
     #!/bin/bash
     # BASH can iterate over $list variable using a "here string" #
@@ -138,7 +139,7 @@ You can now read from $list and install the package:
     done <<< "$list"
     printf '*** Do not forget to run php5enmod and restart the server (httpd or php5-fpm) ***\n'
 
-Sample outputs:
+示例输出:
 
     Installing php package php-pear...
     Installing php package php5-cli...
@@ -150,14 +151,16 @@ Sample outputs:
     Installing php package php5-mysql...
     Installing php package php5-readline...
     Installing php package php5-suhosin-extension...
-    *** Do not forget to run php5enmod and restart the server (httpd or php5-fpm) ***
+
+
+    *** 不要忘了运行php5enmod并重新启动服务（httpd 或 php5-fpm） ***
 
 --------------------------------------------------------------------------------
 
 via: http://www.cyberciti.biz/faq/unix-howto-read-line-by-line-from-file/
 
 作者：[作者名][a]
-译者：[译者ID](https://github.com/译者ID)
+译者：[strugglingyouth](https://github.com/strugglingyouth)
 校对：[校对者ID](https://github.com/校对者ID)
 
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