windows 如何使用批处理脚本从文件中删除第一个和最后一个字符？
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How to remove the first and last character from a file using batch script?
提问by InfantPro'Aravind'
This is my input file content which I am using to copy to the output file.
这是我用来复制到输出文件的输入文件内容。
#sdfs|dfasf|sdfs|
sdfs|df!@$%%*&!sdffs|
sasdfasfa|dfsdf|#sdfs|
What I need to do is to omit the first character '#' and last character '|' in the output file. So the output will be,
我需要做的是省略第一个字符“#”和最后一个字符“|” 在输出文件中。所以输出将是，
sdfs|dfasf|sdfs|
sdfs|df!@$%%*&!sdffs|
sasdfasfa|dfsdf|#sdfs
Batch script is new to me, but I tried my best and tried these codes,
批处理脚本对我来说是新的，但我尽力了并尝试了这些代码，
:: drop first and last char
@echo off > xyz.txt & setLocal EnableDelayedExpansion
for /f "tokens=* delims=" %%a in (E:\abc1.txt) do (
set str=%%a
set str=!str:~1!
echo !str!>> xyz.txt
)
As you can see it is not able to produce the required output.
如您所见，它无法产生所需的输出。
The output now being produced is like
现在产生的输出就像
sdfs|dfasf|sdfs|
dfs|dfsdffs|
asdfasfa|dfsdf|#sdfs|
I don't know why the string !@$%%*&!is also getting ripped !?
我不知道为什么字符串!@$%%*&!也被撕裂了！？
采纳答案by Victor
Next script, call file far.vbs, anf create your new file.
Code:
下一个脚本，调用文件far.vbs，然后创建新文件。
代码：
set OldFile=E:\abc1.txt
set NewFile=E:\xyz.txt
echo. > "%NewFile%"
start far.vbs "%NewFile%" "%OldFile%"
far.vbs— delete first and last char from file.
Create new file far.vbsin the same folder as first script, and paste the following code:
far.vbs— 从文件中删除第一个和最后一个字符。在与第一个脚本相同的文件夹中
创建新文件far.vbs，并粘贴以下代码：
Set OldFile = CreateObject("Scripting.FileSystemObject")
Set rdOldFile = OldFile.OpenTextFile(Wscript.Arguments(1), 1)
oContent = rdOldFile.ReadAll
rdOldFile.Close
Set lOldFile = CreateObject("Scripting.FileSystemObject")
Set lrdOldFile = OldFile.OpenTextFile(Wscript.Arguments(1), 1)
oLen = len(lrdOldFile.ReadAll)
lrdOldFile.Close
oData = oContent
oData = Right(oContent, oLen-1)
oData = Left(oData, oLen-2)
Set NewFile = CreateObject("Scripting.FileSystemObject")
Set fData = NewFile.OpenTextFile(Wscript.Arguments(0), 2)
fData.WriteLine (oData)
fData.Close
回答by lugte098
I can't debug my code right now, but try:
我现在无法调试我的代码，但请尝试：
:: drop first and last char
@echo off > xyz.txt
@echo off > xyz2.txt
@echo off > xyz3.txt
setLocal EnableDelayedExpansion
for /f "tokens=* delims= " %%a in (E:\abc1.txt) do (
set /a N+=1
echo %%a >> xyz.txt
echo %%b >> xyz2.txt
echo %%%c >> xyz3.txt
回答by ghostdog74
batch is never a strong point for file processing and text manipulation. If you have the luxury, you can download sedfrom GNU win32, then use this one liner.
批处理从来都不是文件处理和文本操作的强项。如果你有条件，你可以从 GNU win32下载sed，然后使用这一行。
C:\test>sed "/#/{s/^#//;s/|$//}" file
sdfs|dfasf|sdfs
sdfs|df!@$%%*&!sdffs|
sasdfasfa|dfsdf|#sdfs
