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中国DOS联盟论坛 » DOS批处理 & 脚本技术（批处理室） » How to delete all spaces at the beginning of each line in a batch file? View 2,137　Replies 7

Original Poster Posted 2007-10-14 18:48　·　 IANA 局域网IP(Private-Use)

JasonMing

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I have read this post http://www.cn-dos.net/forum/viewthread.php?tid=25172

The method in it can handle ordinary documents, but there will be problems when used to handle batch files. I want to ask if it can be done through findstr (intercepting from the first non - space character of each line to the last character).

Floor 2 Posted 2007-10-14 19:51　·　中国湖北武汉电信

lxmxn

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```@echo off
for /f "tokens=*" %%a in (test.txt) do echo %%a
pause
```

Floor 3 Posted 2007-10-14 20:09　·　中国辽宁本溪联通

jmz573515

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VBS function - LTRIM is easier...

Floor 4 Posted 2007-10-14 21:36　·　 IANA 局域网IP(Private-Use)

JasonMing

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Originally posted by lxmxn at 2007-10-14 07:51 PM:
@echo off

for /f "tokens=*" %%a in (test.txt) do echo %%a

pause
Is this???

This is in that post...
No...

When encountering such a statement, the output changes

echo           ------------------------------

echo           ^|      Invalid Program         ^|

echo           ------------------------------

After output



echo           ------------------------------

echo           |      Invalid Program         |

echo           ------------------------------

As a result, when running, the vertical bar "|" will be treated as a pipe, and the result will be wrong...

Floor 5 Posted 2007-10-14 21:53　·　中国湖北武汉电信

lxmxn

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Please make the problem clearer, I don't quite understand.

I tested and there are no problems.

Floor 6 Posted 2007-10-14 22:17　·　 IANA 局域网IP(Private-Use)

JasonMing

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It is the text in the original file:
echo ------------------------------
echo ^| ^|
echo ^| 无效程序 ^|
echo ------------------------------
After the processing of removing spaces, it becomes like this:
echo ------------------------------
echo ^| ^|
echo | 无效程序 |
echo ------------------------------
Only when there are Chinese characters will this happen. In the second line of echo, it is still output as originally, but in the third line, the original ^| is output as |, and in this way, executing the program after removing spaces will cause errors...

Floor 7 Posted 2007-10-14 23:54　·　中国湖北武汉电信

lxmxn

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# type test.txt
echo ------------------------------
echo ^| ^|
echo ^| Invalid Program ^|
echo ------------------------------

# type Deal_test.bat
@echo off
for /f "tokens=*" %%a in (test.txt) do echo %%a
pause

# Deal_test.bat
echo ------------------------------
echo ^| ^|
echo ^| Invalid Program ^|
echo ------------------------------
Press any key to continue. . .

#

Floor 8 Posted 2007-10-15 22:08　·　 IANA 局域网IP(Private-Use)

JasonMing

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Hehe... I tested it and it really works... I used the same command... Why was it like that that day...
Sweat --||
Maybe it's a problem with the machine...
By the way, post a small program of the streamlined batch file I made. It has only 3 lines. Don't laugh at me oh...

(Function: Delete comments, delete blank lines and spaces at the beginning of each line)

@echo off

if %1.==. (set /p file=input:) else (set file=%1)

for /f "delims=" %%i in ("%file%") do (set file="%%~i"&set file0=%%~dpi&set file1=%%~nxi)

for /f "tokens=*" %%a in ('findstr /v "REM ::" %file%') do echo %%a>>"%file0%Deal_%file1%"

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