If there is a file with content (not including quotes) " ABCDEFGHH PPP EGFAFDAF", I want to find PPP and delete PPP and all the content after it, and skip if not found! How to do it? Thanks in advance! Posting again with a thick face! :P
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中国DOS联盟论坛 » DOS批处理 & 脚本技术（批处理室） » [Re-seeking help] Novice asks about batch processing to modify text file content issues
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Original Poster
Posted 2007-05-03 22:31 · 中国 福建 泉州 石狮市 电信
Floor 2
Posted 2007-05-03 22:47 · 中国 广东 湛江 廉江市 电信
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Suppose your file is 1.txt
for /f "tokens=1 delims=PPP" %%i in (1.txt) do (
echo %%i >2.txt
)κχυμγνξοθπρωψιαδλεηφβτζσ┬╀┾┳┞┯┰┱┣┲┳╂╁│├┟┭┠这是什么？？这就是我的人生
Floor 3
Posted 2007-05-04 14:20 · 中国 福建 泉州 石狮市 电信
Thanks! But when the file has a carriage return, only the line before the carriage return is output, and the following cannot be input into 2.txt. For example, the content (not including quotes) " ABCDEFGHH
44
PPP
EGFAFDAF" can only output the first line! How to improve?
44
PPP
EGFAFDAF" can only output the first line! How to improve?
Floor 4
Posted 2007-05-04 14:21 · 中国 福建 泉州 石狮市 电信
The FOR command is really deep. I don't understand it and am studying hard.
Floor 5
Posted 2007-05-04 17:27 · 中国 湖北 武汉 电信
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The efficiency is relatively low.
```
@echo off
for /f "delims=" %%a in (1.txt) do (
echo %%a|find /i "PPP" >nul 2>&1 && set str=batchering
if not defined str echo\%%a>>11.txt
)
start 11.txt
```
```
@echo off
for /f "delims=" %%a in (1.txt) do (
echo %%a|find /i "PPP" >nul 2>&1 && set str=batchering
if not defined str echo\%%a>>11.txt
)
start 11.txt
```
Floor 6
Posted 2007-05-04 20:29 · 中国 福建 泉州 晋江市 电信
Originally posted by lxmxn at 2007-5-4 04:27 AM:
Low efficiency.
@echo off
for /f "delims=" %%a in (1.txt) do (
echo %%a|find /i "PPP" >nul 2>&1 && set str=batchering
if not defined str echo\ ...
No words, convinced! Great!
Floor 7
Posted 2007-05-04 21:59 · 中国 福建 泉州 石狮市 电信
Let me ask you again, if you want to delete all the text before PPP, including spaces, returns and so on, how to change it?
Floor 8
Posted 2007-05-05 21:45 · 中国 河北 廊坊 电信
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Originally posted by qasa at 2007-5-3 10:47 PM:
Suppose your file is 1.txt
for /f "tokens=1 delims=PPP" %%i in (1.txt) do (
echo %%i >2.txt
)
Can you help me take a look at what I wrote?
@echo off
setlocal enabledelayedexpansion
set F=1.txt
set "F=%F:"=%"
for %%i in ("%F%") do set F=%%~fi
set a=PPP
set b=
for /f "delims=" %%i in ('type "%F%"') do (
set str=%%i
set "str=!str:%a%=%b%!"
echo !str!>>"%F%"_new.txt
)
Why does it show "ECHO is off."
chuier
Floor 9
Posted 2007-05-06 16:04 · 中国 湖北 武汉 电信
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Originally posted by chuier at 2007-5-5 21:45:
Can you help me take a look at this paragraph I wrote?
@echo off
setlocal enabledelayedexpansion
set F=1.txt
set "F=%F:"=%"
for %%i in ("%F%") do set F=%%~fi
set a=PPP
set b=
for /f ...
The %F% in the first for represents a file. If this file does not exist, %%~fi will also expand its full path, which may eventually cause the second for command to exit because the file cannot be found. It is better to use the form for /f %%a in ('dir %F%') do …… to judge whether there is the %F% file.
When I tested, it was normal and could be replaced, but overall, this batch processing is not rigorous.
In addition, a reminder: send a new topic for new questions.
Floor 10
Posted 2007-05-06 19:49 · 中国 河北 廊坊 电信
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### Question 1:
In the command `for /f "delims=" %%a in (1.txt) do (echo %%a|find /i "PPP" >nul 2>&1)`, `2>&1` means redirecting the standard error output (file descriptor 2) to the standard output (file descriptor 1). So that any error messages from the `find` command are sent to the same place as the normal output, and in this case, both are redirected to `nul` to suppress them.
### Question 2:
`set str=batchering` means setting a variable named `str` with the value "batchering".
In the command `for /f "delims=" %%a in (1.txt) do (echo %%a|find /i "PPP" >nul 2>&1)`, `2>&1` means redirecting the standard error output (file descriptor 2) to the standard output (file descriptor 1). So that any error messages from the `find` command are sent to the same place as the normal output, and in this case, both are redirected to `nul` to suppress them.
### Question 2:
`set str=batchering` means setting a variable named `str` with the value "batchering".
chuier
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Posted 2007-05-06 20:15 · 中国 湖北 武汉 电信
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Re chuier:
1. Redirect the output of handle 2 (StdErr) to the input of handle 1, and the input of handle 1 is then output to the null device (Nul), so "2>&1" can shield the error output (StdErr) of the command, similar to 2>nul;
2. Here, defining a str is for the service of the "if not defined str" statement, which means that if the str variable is not defined, the following command will be executed.
That's a simple explanation of this point. If you want to know more about their usage in detail, you can search for related discussions in the forum.
1. Redirect the output of handle 2 (StdErr) to the input of handle 1, and the input of handle 1 is then output to the null device (Nul), so "2>&1" can shield the error output (StdErr) of the command, similar to 2>nul;
2. Here, defining a str is for the service of the "if not defined str" statement, which means that if the str variable is not defined, the following command will be executed.
That's a simple explanation of this point. If you want to know more about their usage in detail, you can search for related discussions in the forum.
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Posted 2007-05-06 20:58 · 中国 江苏 南京 中移铁通
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for /f "tokens=1 delims=PPP" %%i in (1.txt) do (
echo\%%i >>2.txt
)
It's relatively simple. However, qasa's echo %%i 〉2.txt should be changed to echo\%%i >>2.txt
echo\%%i >>2.txt
)
It's relatively simple. However, qasa's echo %%i 〉2.txt should be changed to echo\%%i >>2.txt
Just does it;I lov bat
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Posted 2007-05-06 22:01 · 中国 湖北 武汉 电信
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Originally posted by jinrich at 2007-5-6 20:58:
for /f "tokens=1 delims=PPP" %%i in (1.txt) do (
echo\%%i >>2.txt
)
It's relatively simple. However, qasa's echo %%i >2.txt should be changed to echo\%%i >>2.txt
This doesn't work. It can only read the characters before the character P, and cannot handle the characters before PPP.
Floor 14
Posted 2007-05-08 04:26 · 中国 广东 深圳 宝安区 电信
Originally posted by caiyiqun at 2007-5-3 10:31 PM:
If there is a file with content (excluding quotes) " ABCDEFGHH PPP EGFAFDAF", I want to find PPP and delete PPP and all the content that follows it, and skip if not found!
How to do it?
Thanks in advance! Posting again with cheekiness! :P
Then if we change PPP to AAA, how to change it? Keep all the content that follows it
[ Last edited by a201 on 2007-5-8 at 04:27 AM ]
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