Question

如何从文件中取出某些信息。

例如：

来自文件.txt的
有很多数据

1)a=123    
2)b=234     
3)c=345  
4)e=456

我想要提取信息' a ';
我需要具体说明列，行还是单词？

我不知道应该怎么做或者我应该使用什么命令我可以使用批处理文件中的命令来执行此操作，还是应该使用其他程序软件？

希望可以帮助我..

Answer 1

所以你想把等号（=）当作列分隔符？如果是这样，你有awk，你可以这样做：

cat file.txt 
a=123    
b=234     
c=345  
e=456

awk -F = '{print $2}' file.txt 
123    
234     
345  
456

如果您希望以编程方式执行此操作，则可以使用库在等号上拆分文本。大多数编程语言都有库来执行此操作。

Answer 2

简单方法：

@Echo OFF
Type "Text.txt" | Find "a="

中途：

@Echo OFF
For /F "Tokens=1,* Delims==" %%a in ('Type "Text.txt" ^| Find "a="') Do (Echo %%a, %%b)

有用的方式：

@Echo OFF

:: TEXT MANIPULATOR ROUTINE v0.1
:: by Elektro H@cker

REM USE:
::TEXTMAN [ACTION] [IN LINE (Optional)] [FILE] [TEXT (Optional)]


REM ACTIONS:
REM 
REM  AL  = ADD_LEFT           * Add text to the beginning of a line
REM  AR  = ADD_RIGHT          * Add text to the end of a line
REM  E   = ERASE              * Delete a line
REM  I   = INSERT             * Add a empty line (Or a line with text)
REM  RL  = REPLACE_LINE       * Replace a line
REM  RS  = REPLACE_STRING     * Replace words of a line
REM  RSA = REPLACE_STRING_ALL * Replace words of all line
REM  C+  = CHARACTER_PLUS     * Delete the first "X" characters in all lines
REM  C-  = CHARACTER_LESS     * Delete the last  "X" characters in all lines
REM  L+  = LINE_PLUS          * Cut the first "X" lines
REM  L-  = LINE_LESS          * Cut the last  "X" lines


REM EXAMPLES:

:: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: ::
::
:: Deletes the line 3
:: Call :TEXTMAN E 3 "Test.txt"
::
:: Add a phrase to the beginning of line 3
:: Call :TEXTMAN AL 3 "Test.txt" "Elektro H@cker"
::
:: Add a phrase to the end of line 3
:: Call :TEXTMAN AR 3 "Test.txt" "Elektro H@cker"
::
:: Add a empty line at line 3
:: Call :TEXTMAN I 3 "Test.txt"
:: 
:: Add a line with a word at line 3
:: Call :TEXTMAN I 3 "Test.txt" "Elektro H@cker"
::
:: Replaces the line 3 with "Elektro H@cker"
:: Call :TEXTMAN RL 3 "Test.txt" "Elektro H@cker"
::
:: Replaces the words "Elektro" to "H@cker" in line 3
:: Call :TEXTMAN RS 3 "Test.txt" "Elektro" "H@cker"
::
:: Replaces the words "Elektro" to "H@cker" in all lines
:: Call :TEXTMAN RSA "Test.txt" "Elektro" "H@cker"
::
:: Deletes the first 3 characters in all lines
:: Call :TEXTMAN C+ 3 "Test.txt"
::
:: Deletes the last 3 characters in all lines
:: Call :TEXTMAN C- 3 "Test.txt"
::
:: Deletes the first 3 lines
:: Call :TEXTMAN L+ 3 "Test.txt"
::
:: Deletes the last 3 lines
:: Call :TEXTMAN L- 3 "Test.txt"
::
:: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: :: ::

:TEXTMAN
(SET /A "A=0", "LINE=0", "TOTAL_LINES=0")  &  (CALL :%~1 %* || (ECHO Parametro incorrecto & Exit /B 1)) & (GOTO:EOF)
:AL
(For /F "usebackq tokens=*" %%@ in ("%~3") DO (Call Set /A "LINE+=1" && (CMD /C "IF NOT "%%LINE%%" EQU "%~2" (Echo %%@ >> "%~nx3.NEW") ELSE (Echo %~4%%@ >> "%~nx3.NEW")"))) && (CALL :RENAMER "%~3") & (GOTO:EOF)
:AR
(For /F "usebackq tokens=*" %%@ in ("%~3") DO (Call Set /A "LINE+=1" && (CMD /C "IF NOT "%%LINE%%" EQU "%~2" (Echo %%@ >> "%~nx3.NEW") ELSE (Echo %%@%~4 >> "%~nx3.NEW")"))) && (CALL :RENAMER "%~3") & (GOTO:EOF)
:E
(For /F "usebackq tokens=*" %%@ in ("%~3") DO (Call Set /A "LINE+=1" && (CMD /C "IF NOT "%%LINE%%" EQU "%~2" (Echo %%@ >> "%~nx3.NEW")"))) && (CALL :RENAMER "%~3") & (GOTO:EOF)
:I
(For /F "usebackq tokens=*" %%@ in ("%~3") DO (Call Set /A "LINE+=1" && (CMD /C "IF     "%%LINE%%" EQU "%~2" (IF NOT "%~4" EQU "" (Echo %~4 >> "%~nx3.NEW") ELSE (Echo. >> "%~nx3.NEW"))" & Echo %%@ >> "%~nx3.NEW"))) && (CALL :RENAMER "%~3") & (GOTO:EOF)
:RL
(For /F "usebackq tokens=*" %%@ in ("%~3") DO (Call Set /A "LINE+=1" && (CMD /C "IF NOT "%%LINE%%" EQU "%~2" (Echo %%@ >> "%~nx3.NEW") ELSE (Echo %~4 >> "%~nx3.NEW")"))) && (CALL :RENAMER "%~3") & (GOTO:EOF)
:RS
(For /F "usebackq tokens=*" %%@ in ("%~3") DO (Call Set /A "LINE+=1" && (CMD /C "IF NOT "%%LINE%%" EQU "%~2" (Echo %%@ >> "%~nx3.NEW") ELSE (CALL SET "STRING=%%@" && CALL ECHO %%STRING:%~4=%~5%% >> "%~nx3.NEW")"))) && (CALL :RENAMER "%~3") & (GOTO:EOF)
:RSA
(For /F "usebackq tokens=*" %%@ in ("%~2") DO (CALL SET "STRING=%%@" && (CALL ECHO %%STRING:%~3=%~4%% >> "%~2.NEW"))) && (CALL :RENAMER "%~2") & (GOTO:EOF)
:C+
(For /F "usebackq tokens=*" %%@ in ("%~3") DO (Call Set   "LINE=%%@" && (CALL ECHO %%LINE:~%~2%% >>    "%~nx3.NEW"))) && (CALL :RENAMER "%~3") & (GOTO:EOF)
:C-
(For /F "usebackq tokens=*" %%@ in ("%~3") DO (Call Set   "LINE=%%@" && (CALL ECHO %%LINE:~0,-%~2%% >> "%~nx3.NEW"))) && (CALL :RENAMER "%~3") & (GOTO:EOF)
:L+
(Call SET /A "A=%~2-1") && (Call TYPE "%~3" | @MORE +%%A%% > "%~nx3.NEW") && (CALL :RENAMER "%~3") & (GOTO:EOF)
:L-
(FOR /F %%X IN ('TYPE "%~3"') DO (CALL SET /A "TOTAL_LINES+=1")) & (CALL SET /A "TOTAL_LINES-=%~2-1") & (For /F "usebackq tokens=*" %%@ in ("%~3") DO (Call Set /A "LINE+=1" & Call echo " %%LINE%%!!| FINDSTR " %%TOTAL_LINES%% " && CALL :RENAMER "%~3" && GOTO:EOF || (Echo %%@ >> "%~nx3.NEW")))
:RENAMER
(REN "%~1" "%~nx1.BAK") & (MOVE /Y "%~nx1.BAK" "%TEMP%\" >NUL) & (REN "%~nx1.NEW" "%~nx1") & (GOTO:EOF)

从文件中取出某些数据

2 个答案: