我需要一些帮助来编写 Windows 批处理脚本。我有一个带分隔符的文本文件，其数据如下所示：
1|2|3|4|5|6
1|2|3|4|5|6
1|2|3|4|5|6
1|2|3|4|5|6
1|2|3|4|5|6
1|2|3|4|5|6.
我想编写一个脚本，我可以在其中编辑此文本文件以删除数据的第一个和最后一个字段。这样输出文本文件将包含以下数据：
2|3|4|5
2|3|4|5
2|3|4|5
2|3|4|5
2|3|4|5
2|3|4|5.
请帮我。
提前致谢。
问候， Vibhor
可以编写一个纯批处理解决方案，但是要编写一个可以处理任何你扔给它的健壮的解决方案是相当棘手的，而且最终的结果会很慢。
使用 JScript 和正则表达式很容易完成这项任务，但并不是每个人都知道这些技术（尽管知道 JScript 和正则表达式的人可能比知道批处理的人还多！）
我编写了一个名为 REPL.BAT 的混合 JScript/批处理实用程序，可以从命令行或批处理文件轻松调用它。它在标准输入上执行正则表达式搜索和替换，并将结果写入标准输出。它适用于所有现代版本的 Windows，从 XP 开始。
使用 REPL.BAT 轻松高效地完成您的任务
假设每一行都有 6 个值（空值可以，但总是有 5 个分隔符）：
type test.txt|repl "^[^|]*\|(.*)\|[^|]*$" "$1" >test.txt.new
move /y test.txt.new test.txt
如果某些行末尾缺少值（假定缺失值为空）：
type test.txt|repl "(^[^|]*(\|[^|]*){4})\|[^|]*$" "$1"|repl "^[^|]*\|?(.*)$" "$1" >test.txt.new
move /y test.txt.new test.txt
这是 REPL.BAT 实用程序。它应该与批处理脚本和文件放在同一个文件夹中，或者最好放在位于 PATH 中的文件夹中。完整的文档内置在脚本中。
@if (@X)==(@Y) @end /* Harmless hybrid line that begins a JScript comment
::************ Documentation ***********
:::
:::REPL Search Replace [Options [SourceVar]]
:::REPL /?
:::
::: Performs a global search and replace operation on each line of input from
::: stdin and prints the result to stdout.
:::
::: Each parameter may be optionally enclosed by double quotes. The double
::: quotes are not considered part of the argument. The quotes are required
::: if the parameter contains a batch token delimiter like space, tab, comma,
::: semicolon. The quotes should also be used if the argument contains a
::: batch special character like &, |, etc. so that the special character
::: does not need to be escaped with ^.
:::
::: If called with a single argument of /? then prints help documentation
::: to stdout.
:::
::: Search - By default this is a case sensitive JScript (ECMA) regular
::: expression expressed as a string.
:::
::: JScript regex syntax documentation is available at
::: http://msdn.microsoft.com/en-us/library/ae5bf541(v=vs.80).aspx
:::
::: Replace - By default this is the string to be used as a replacement for
::: each found search expression. Full support is provided for
::: substituion patterns available to the JScript replace method.
::: A $ literal can be escaped as $$. An empty replacement string
::: must be represented as "".
:::
::: Replace substitution pattern syntax is documented at
::: http://msdn.microsoft.com/en-US/library/efy6s3e6(v=vs.80).aspx
:::
::: Options - An optional string of characters used to alter the behavior
::: of REPL. The option characters are case insensitive, and may
::: appear in any order.
:::
::: I - Makes the search case-insensitive.
:::
::: L - The Search is treated as a string literal instead of a
::: regular expression. Also, all $ found in Replace are
::: treated as $ literals.
:::
::: B - The Search must match the beginning of a line.
::: Mostly used with literal searches.
:::
::: E - The Search must match the end of a line.
::: Mostly used with literal searches.
:::
::: V - Search and Replace represent the name of environment
::: variables that contain the respective values. An undefined
::: variable is treated as an empty string.
:::
::: M - Multi-line mode. The entire contents of stdin is read and
::: processed in one pass instead of line by line. ^ anchors
::: the beginning of a line and $ anchors the end of a line.
:::
::: X - Enables extended substitution pattern syntax with support
::: for the following escape sequences:
:::
::: \\ - Backslash
::: \b - Backspace
::: \f - Formfeed
::: \n - Newline
::: \r - Carriage Return
::: \t - Horizontal Tab
::: \v - Vertical Tab
::: \xnn - Ascii (Latin 1) character expressed as 2 hex digits
::: \unnnn - Unicode character expressed as 4 hex digits
:::
::: Escape sequences are supported even when the L option is used.
:::
::: S - The source is read from an environment variable instead of
::: from stdin. The name of the source environment variable is
::: specified in the next argument after the option string.
:::
::************ Batch portion ***********
@echo off
if .%2 equ . (
if "%~1" equ "/?" (
findstr "^:::" "%~f0" | cscript //E:JScript //nologo "%~f0" "^:::" ""
exit /b 0
) else (
call :err "Insufficient arguments"
exit /b 1
)
)
echo(%~3|findstr /i "[^SMILEBVX]" >nul && (
call :err "Invalid option(s)"
exit /b 1
)
cscript //E:JScript //nologo "%~f0" %*
exit /b 0
:err
>&2 echo ERROR: %~1. Use REPL /? to get help.
exit /b
************* JScript portion **********/
var env=WScript.CreateObject("WScript.Shell").Environment("Process");
var args=WScript.Arguments;
var search=args.Item(0);
var replace=args.Item(1);
var options="g";
if (args.length>2) {
options+=args.Item(2).toLowerCase();
}
var multi=(options.indexOf("m")>=0);
var srcVar=(options.indexOf("s")>=0);
if (srcVar) {
options=options.replace(/s/g,"");
}
if (options.indexOf("v")>=0) {
options=options.replace(/v/g,"");
search=env(search);
replace=env(replace);
}
if (options.indexOf("l")>=0) {
options=options.replace(/l/g,"");
search=search.replace(/([.^$*+?()[{\\|])/g,"\\$1");
replace=replace.replace(/\$/g,"$$$$");
}
if (options.indexOf("b")>=0) {
options=options.replace(/b/g,"");
search="^"+search
}
if (options.indexOf("e")>=0) {
options=options.replace(/e/g,"");
search=search+"$"
}
if (options.indexOf("x")>=0) {
options=options.replace(/x/g,"");
replace=replace.replace(/\\\\/g,"\\B");
replace=replace.replace(/\\b/g,"\b");
replace=replace.replace(/\\f/g,"\f");
replace=replace.replace(/\\n/g,"\n");
replace=replace.replace(/\\r/g,"\r");
replace=replace.replace(/\\t/g,"\t");
replace=replace.replace(/\\v/g,"\v");
replace=replace.replace(/\\x[0-9a-fA-F]{2}|\\u[0-9a-fA-F]{4}/g,
function($0,$1,$2){
return String.fromCharCode(parseInt("0x"+$0.substring(2)));
}
);
replace=replace.replace(/\\B/g,"\\");
}
var search=new RegExp(search,options);
if (srcVar) {
WScript.Stdout.Write(env(args.Item(3)).replace(search,replace));
} else {
while (!WScript.StdIn.AtEndOfStream) {
if (multi) {
WScript.Stdout.Write(WScript.StdIn.ReadAll().replace(search,replace));
} else {
WScript.Stdout.WriteLine(WScript.StdIn.ReadLine().replace(search,replace));
}
}
}
sed 从GnuWin尝试
sed "s/^1|//;s/|6//" file
或 cmd 外壳：
for /f "tokens=2-6delims=|6" %a in (file) do @echo(%a^|%b^|%c^|%d%e