Linux Perl,sed,shell Bulk replacement of file content

Method 1: The two-day use of MAVEN in building an application, because project is very large, there are more than 700 pom.xml files, and even more depressing is that in many pom.xml files are individually specified in the repository URL, I need to

Fake Su, perl su.pl steal root Password _ application tips

I changed it and turned it back on and added a delay: #!/usr/bin/perl # written by Xi4oyu . Print "Password:"; ' Stty-echo '; $s 1=; print "\ n"; ' Stty echo '; Sleep 3; Print "Su:incorrect password\n"; Chomp ($s 1); $s 2= "Password is:"; $s 3= "

Write a Perl removal program _ Application Tips

Have you ever encountered Unix, a directory file too many, cannot remove the phenomenon, I wrote a perl program for everyone to delete Copy Code code as follows: Cat > del.pl #!/usr/bin/perl $file 1= $ARGV [0]; @tests = (1,2,3,4,5,6,7,

Introduction to $a and $b in Perl _perl

Even if the strict and warnings options are turned on, the following code does not have errors and warnings. Copy Code code as follows: #!/usr/bin/perl Use strict; Use warnings; Sub Test { $a = 1; $b = 2; Print $a, "\ n"; Print $b, "\

Perl compares instance code of two file strings _perl

Requirements: Take a row in file 1, compare all the data in file 2, save the same, or delete. Copy Code code as follows: #!/usr/bin/perl #use Strict; Open (FILE1, "c:/perl/bx/bx-users.txt"); Open (FILE2,

Perl reads the data from the file and outputs the implementation code _PERL

window to read a file in the following format:Open (Filehand, "path E.g:d:\\data.txt"); The open content is then assigned to a variable:$protein =; Attached: A program for reading protein sequences. Copy Code code as follows:

Perl invokes the external Command (g) method of awk _perl

However, the common gadget of the Linux system is inherently friendly to the columns, sometimes invoking awk directly in Perl is more convenient and efficient than writing the corresponding Perl script. For example, insert the AWK statement with

Several ways of processing Perl file reads summary _perl

1, single line (large file processing): Copy Code code as follows: My $oneline = or while ($line =) { } 2, read all (small file processing): Copy Code code as follows: Open (My $in, "path") or Die

Perl merged text for a piece of instance code _perl

There is such a text file, the content has many lines as follows, the quantity is indefinite.Lif (__AMSCRIPT_CD ("Www.jb51.net")) {__AMSCRIPT_WC (' #closead {display:none;} ');Lif (__AMSCRIPT_CD ("Www.jb51.net")) {__AMSCRIPT_WC (' #footer_win

JavaScript implements Perl-style variable substitution

Perl-style variable substitution has better readability, and common JavaScript programming with a lot of + number, dazzling. The good news is that we can use regular expressions to help implement a programming-style transformation. The following

Perl lists (list) and Arrays (array)

If a scalar is the ' singular ' in Perl, as we described it at the beginning of Chapter 2, the ' pulural ' in Perl is Represen Ted by lists and arrays.A list is an ordered collection of scalars. An array was a variable that contains a list. People

Windows uses Asmcmd ' Perl.exe ' not internal or external commands

Windows needs to set ORACLE_SID and Oracle_home when using Asmcmd, the path does not need to be quoted when setting Oracle_homeC:\users\administrator>asmcmd"Asmcmd:the environment variable oracle_home is not set."C:>set Oracle_sid=+asm To set the

Make a simple "downloader virus" in Perl

Perl That's been learning, and sometimes Perl doesn't understand it with Python, so maybe Perl understandsHere's a copy of the Python notation, a Perl version, of course, for learning, the download virus is a little too simple.The backdoor.sh

Generating random complex passwords with Perl

#!/usr/bin/perlmy  $characterset  =  ' abcdefghijkmnopqrstuvwxyz23456789abcdefghijklmnpqrstuvwxyz '; # $characterset  .=  ' [email protected]$%^ () _{},./<>?-'; # $characterset  .=  "[Email  protected]$%^&* () _+| {},./<>?-=\ "; # $characterset  .= 

Several ways to use file manipulation handles in Perl-Basic edition

In Perl there are several ways to use the handle, where open is the most basic use of the method, the following I encountered the use of several handles to make a small summary:Use of the Open method:The Open method is the most basic opening file

Install your own Perl modules

Source:Http://www.cnblogs.com/itech/archive/2012/12/17/2822044.htmlInstall your own Perl modules. When you do not have root privileges, you need to install Perl modules into your home directory.From:

Perl Learning Notes (2)----an oversight of regular expression number matching

The 15th chapter of the introduction to the Perl language exercises the 2nd question as follows:Write a program with the given-when structure, according to the input number, if it can be divisible by 3, print "Fizz", if it can be divisible by 5,

Perl Best Practices (excerpt)---08

Eighth chapter: Built-in function 0 nine-Qi.do not recalculate the sort key in sort. 0 Jiu Ba.use reverse to reverse the list. 0 Jiu Jiu.use scalar reverse to reverse the scalar. 00.use unpack to remove fixed-width fields. one 0.use Split to remove

Perl Best Practices (excerpt)---06

The sixth chapter: Control structure 0 LU Ii.Use the code block if, and do not use the suffix if. For example, the following is not a good idea:$sum + = $measurement if defined $measurement;In fact, it equals:if (defined $measurement) {$sum + =

Use perl.net to access the database

Not only can vb.net, C # and other Microsoft development software be called. net framework. As far as I know, at least 28 of them know how to call the development language. net framework. the following example shows how to use perl.net to access the

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