Bash脚本将一个文件中的代码插入另一个文件中的特定位置? [英] Bash script to insert code from one file at a specific location in another file?

问题描述

我有一个带代码段的fileA，并且我需要一个脚本来将该代码段插入到特定模式之后的行中的fileB中.

I have a fileA with a snippet of code, and I need a script to insert that snippet into fileB on the line after a specific pattern.

我正在尝试制作接受的答案工作，但是没有，并且没有给出错误，所以不确定为什么不这样做:

I'm trying to make the accepted answer in this thread work, but it's not, and is not giving an error so not sure why not:

sed -e '/pattern/r text2insert' filewithpattern

有什么建议吗?

模式(在后一行插入代码段):

pattern (insert snippet on line after):

def boot {

也尝试过逃脱模式，但是没有运气:

also tried escaped pattern but no luck:

def\ boot\ {
def\ boot\ \{

fileA片段:

    LiftRules.htmlProperties.default.set((r: Req) =>
        new Html5Properties(r.userAgent))

fileB(Boot.scala):

fileB (Boot.scala):

package bootstrap.liftweb
import net.liftweb._
import util._
import Helpers._
import common._
import http._
import sitemap._
import Loc._


/**
 * A class that's instantiated early and run.  It allows the application
 * to modify lift's environment
 */
class Boot {
  def boot {
    // where to search snippet
    LiftRules.addToPackages("code")

    // Build SiteMap
    val entries = List(
      Menu.i("Home") / "index", // the simple way to declare a menu

      // more complex because this menu allows anything in the
      // /static path to be visible
      Menu(Loc("Static", Link(List("static"), true, "/static/index"), 
           "Static Content")))

    // set the sitemap.  Note if you don't want access control for
    // each page, just comment this line out.
    LiftRules.setSiteMap(SiteMap(entries:_*))

    // Use jQuery 1.4
    LiftRules.jsArtifacts = net.liftweb.http.js.jquery.JQuery14Artifacts

    //Show the spinny image when an Ajax call starts
    LiftRules.ajaxStart =
      Full(() => LiftRules.jsArtifacts.show("ajax-loader").cmd)

    // Make the spinny image go away when it ends
    LiftRules.ajaxEnd =
      Full(() => LiftRules.jsArtifacts.hide("ajax-loader").cmd)

    // Force the request to be UTF-8
    LiftRules.early.append(_.setCharacterEncoding("UTF-8"))

  }
}

推荐答案

sed格式对我来说是正确的.

The sed format looks correct to me.

为帮助您诊断此问题，请尝试使用两个更简单的文本文件和一个简单的模式.

To help you diagnose this, try it with two simpler text files and a simple pattern.

带有模式的文件file:

File filewithpattern:

hello
world

文件文本插入:

foo
goo

现在运行sed:

sed -e '/hello/r textinsert' filewithpattern

您应该看到以下内容:

hello
foo
goo
world

这对您有用吗?

如果是这样，请使用模式编辑filewithpattern以使用目标:

If so, then edit filewithpattern to use your target:

hello
def boot {
world

运行命令:

sed -e '/def boot {/r textinsert' filewithpattern

您应该看到以下内容:

hello
def boot {
foo
goo
world

如果要变量替换，请尝试以下操作:

If you want variable substitution, try this:

#!/bin/bash
PATTERN='def boot {'
sed -e "/${PATTERN}/r textinsert" filewithpattern

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