如何删除许多文件中包含单词SID的一行?

当代码如此不一致时,我不会觉得运行全局搜索和替换是游戏。我会使用grep/vim来检查每一行,除非你真的有10000个更改要做。要使用grep/vim,步骤如下:

1.

" <f1> looks for SID in the current file
map <f1> /\<SID\><CR>
" <f2> goes to the next file
map <f2> :next<CR><f1>

" <f5> deletes only the current line, and goes to the next SID
map <f5> dd
" <f6> deletes the current line and the one above, and goes to the next SID
map <f6> k2dd
" <f7> deletes the current line and the one below, and goes to the next SID
map <f7> 2dd
" <f8> deletes the current line, and the one above AND the one below
map <f8> k3dd

grep

grep -rl '\bSID\b' * > fix-these-files.txt

您可能需要稍微调整一下,以确保它能找到您需要更改的所有文件。在进入下一步之前,请确保它是正确的。

vim '+set confirm' '+/\<SID\>' $(cat fix-these-files.txt)

你现在应该已经 vim 在第一个文件中,您需要更改。使用以下步骤修复每次出现的SID:

• <F5>
• 如果您需要同时删除上面的行,请按 <F6> <F5> .
• 如果您需要同时删除下面的行,请按 <F7> <F5>
• 和 下面同时按下 <F8> <F5>
• <F1>
• <F2>

全局正则表达式打印 命令从步骤 2.

.vimrc .

这不能用tr.Sed来完成。可能可以使用,但我对它不够了解,无法举个例子。我会使用perl,然后我可能会引入一些状态变量,参见 this answer single_ampersand_found SID_found

#!/usr/bin/perl -w
use strict;
use warnings;

my $state = 0;
my $state_ampersand_found = 1;
my $state_SID_found  = 2;

my $previous_line = "";

while (my $line = <>) {
        chomp($line);

        if ($line =~ /"&/) {
                if ($state == $state_ampersand_found) {
                        print $previous_line;
                }
                if ($state == $state_SID_found) {
                        $previous_line = "";
                        $state = 0;
                        next;
                }
                $state = $state_ampersand_found;
                # remember current line, but do not print it (yet)
                $previous_line = $line . "\n";
                next;
        }
        if ($line =~ /SID/) {
                $previous_line = "";
                $state = $state_SID_found;
                next;
        }
        $state = 0;
        print $previous_line;
        print $line, "\n";
}

#!/usr/bin/perl

use strict;
use warnings;

my $re_amp = qr/"&(?:amp;)?"/;
my $re_sid = qr/SID/;

while ( my $this = <DATA> ) {
    next unless $this =~ /\S/;

    if ( $this =~ $re_amp ) {
        $this = skip_while(\*DATA, $re_sid);
    }
    elsif ( $this =~ $re_sid ) {
        $this = skip_while(\*DATA, $re_sid, $re_amp);
    }

    print $this if defined $this;
}

sub skip_while {
    my ($fh, $re1, $re2) = @_;
    my $line;
    while ( $line = <$fh> ) {
        next if (defined $re1 and $line =~ $re1)
             or (defined $re2 and $line =~ $re2);
        last;
    }
    return $line;
}

__DATA__
handlers/handle_new_question.php-        . "question_sent"
handlers/handle_new_question.php-        . "&"                        // I do not want this line
handlers/handle_new_question.php:        .  htmlspecialchars(SID)   // NOT wanted
handlers/handle_new_question.php-        . "&"
handlers/handle_new_question.php-        . "email="

handlers/handle_registration.php-            . "successful_registration&"
handlers/handle_registration.php:            . "SID="                   // Not wanted
handlers/handle_registration.php:            .  htmlspecialchars($SID)   // Not wanted
handlers/handle_registration.php-            . "&"                  // not wanted
handlers/handle_registration.php-//            . "email="

views/ask_question_link.php-        if(isset($_GET['ask_question'])) {
views/ask_question_link.php-            echo  ("<li id='ask_question_active'><a href='?ask_question&amp;"
views/ask_question_link.php:                .  htmlspecialchars(SID)   // not wanted
views/ask_question_link.php-                . "&amp;"           // not wanted
views/ask_question_link.php-//                . "email=

C:\Temp> w
handlers/handle_new_question.php-        . "question_sent"
handlers/handle_new_question.php-        . "&"
handlers/handle_new_question.php-        . "email="
handlers/handle_registration.php-            . "successful_registration&"
handlers/handle_registration.php-//            . "email="
views/ask_question_link.php-        if(isset($_GET['ask_question'])) {
views/ask_question_link.php-            echo  ("<li id='ask_question_active'><a href='?ask_question&amp;"
views/ask_question_link.php-//                . "email=