替换命令的一般形式如下： :[range]s/{pattern}/{string}/[flags] [count] 该命令在[range]中的每一行中搜索{patter
# 5. command-line that reverses each paragraph in the file but prints # them in order perl -00 -e 'print reverse <>' file1 file2 file3 ... 8、用随机数重写 # replace string XYZ with a random number less than 611 in these files perl -i.bak -pe "s/XYZ/int rand(611)/e" f1 ...
从Perl v5.6开始,能够以文件句柄的形式打开一个标量而不是文件: open my stringfh,′>′, my multiline_string = "data1\ndata2\ndata3\n"; open my 8.4 IO::Handle 将文件句柄以对象的形式使用: use IO::Handle; open my fh,′>′,fh−>print(′Coconutheadphones′); 8.5 IO::File 使用该模...
perl -MFile::Basename -ne 'print dirname $_' INDEX 一行程序 1 和 2 是 Paul 编写的,而我用 File::Basename 模块对它们进行了重写,这就是 3 和 4。它们的目的很简单,但是任何系统管理员都会觉得这些一行程序很有用。 # 1. write command to mv dirs XYZ_asd to Asd # (you may have to preface...
本節包含適用於 Linux/Mac 平台的 Perl 指令碼,可用來建立私有內容的簽章。若要建立簽章,請使用命令列參數指定 CloudFront URL、簽署者的私有金鑰路徑、金鑰 ID 和 URL 的過期日期,來執行指令碼。此工具也可以解碼簽章的 URL。 注意 建立URL 簽章只是私有內容提供服務的程序的一部分,以使用簽章 URL。如需端對端...
Linux is an open-source operating system that provides a command-line interface to execute various commands. Perl, on the other hand, is a high-level programming language that is often used for automation and text processing tasks. In this article, we will discuss some commonly used Perl comma...
# replace the string in each file foreach my $file ($0, qw[/etc/hosts /etc/defaultrouter /etc/ethers], @ARGV) { # note that we know $replacement is a valid IP address, so this is # not a dangerous invocation my $command = "perl -p -i.bak -e 's/111.111.111.111/$replacement...
command(1) comp_err(1) compare(1) composite(1) compress(1) config.guess(1) config.sub(1) config_data(1) conflict(1) conjure(1) constype(1) continue(1) convert(1) convmv(1) corelist(1) cp(1) cp(1g) cpack(1) cpan(1) cpan2dist(1) cpanp(1) cpio(1) cpp(1) cpp(1) cpu...
print$qq_string;# prints This is a "double-quoted" string with variable Alice# qx operator executes the content as a command and returns the output as a double-quoted string with any delimiter$qx_string=qx(ls -l);print$qx_string;# prints the output of ls -l command# qw operator ...
Get/set the product token that is used to identify the user agent on the network. The agent value is sent as the User-Agent header in the requests.The default is a string of the form libwww-perl/#.###, where #.### is substituted with the version number of this library....