sed 使用環(huán)境

本章介紹如何在GNU/Linux系統(tǒng)上設(shè)置SED環(huán)境。

從軟件包安裝

通常，大多數(shù)GNU/Linux發(fā)行版默認(rèn)都提供SED。使用哪個(gè)命令來(lái)確定系統(tǒng)中是否存在該命令。如果沒(méi)有，請(qǐng)使用 apt 軟件包管理器在基于Debian的GNU/Linux上安裝SED，如下所示:

$sudo apt-get install sed 

安裝后，請(qǐng)確保可通過(guò)命令行訪問(wèn)SED。

$sed --version

執(zhí)行上述代碼后，您將得到以下輸出:

sed (GNU sed) 4.2.2 
Copyright (C) 2012 Free Software Foundation, Inc. 
License GPLv3+: GNU GPL version 3 or later . 
This is free software: you are free to change and redistribute it. 
There is NO WARRANTY, to the extent permitted by law.  
Written by Jay Fenlason, Tom Lord, Ken Pizzini, 
and Paolo Bonzini. 
GNU sed home page: . 
General help using GNU software: . 
E-mail bug reports to: . 
Be sure to include the word "sed" somewhere in the "Subject:" field.

同樣，要在基于RPM的GNU/Linux上安裝SED，請(qǐng)使用yum軟件包管理器，如下所示:

[root]# yum -y install sed

安裝后，請(qǐng)確保可通過(guò)命令行訪問(wèn)SED。

[root]# sed --version

執(zhí)行上述代碼后，您將得到以下輸出:

GNU sed version 4.2.1 
Copyright (C) 2009 Free Software Foundation, Inc. 
This is free software; see the source for copying conditions.  There is NO 
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, 
to the extent permitted by law.  
GNU sed home page: . 
General help using GNU software: . 
E-mail bug reports to: . 
Be sure to include the word "sed" somewhere in the "Subject:" field.

從源代碼安裝

由于GNU SED是GNU項(xiàng)目的一部分，因此可以免費(fèi)下載其源代碼。我們已經(jīng)了解了如何使用程序包管理器安裝SED。現(xiàn)在讓我們了解如何從源代碼安裝SED。

以下安裝適用于任何GNU/Linux軟件，以及大多數(shù)其他免費(fèi)可用的程序。以下是安裝步驟:

• 從真實(shí)位置下載源代碼。命令行實(shí)用程序 wget 用于此目的。

$wget ftp://ftp.gnu.org/gnu/sed/sed-4.2.2.tar.bz2

$tar xvf sed-4.2.2.tar.bz2 

切換到目錄并運(yùn)行configure。

$./configure 

成功完成后， configure 會(huì)生成Makefile。要編譯源代碼，請(qǐng)發(fā)出 make 命令。

$make

$make check 

$sudo make install 

通過(guò)執(zhí)行 sed 命令驗(yàn)證它，如下所示:

$sed --version

執(zhí)行上述代碼后，您將得到以下輸出:

sed (GNU sed) 4.2.2 
Copyright (C) 2012 Free Software Foundation, Inc. 
License GPLv3+: GNU GPL version 3 or later . 
This is free software: you are free to change and redistribute it. 
There is NO WARRANTY, to the extent permitted by law.  
Written by Jay Fenlason, Tom Lord, Ken Pizzini, 
and Paolo Bonzini. 
GNU sed home page: . 
General help using GNU software: . 
E-mail bug reports to: . 
Be sure to include the word "sed" somewhere in the "Subject:" field.