{"id":123,"date":"2016-07-31T16:22:48","date_gmt":"2016-07-31T08:22:48","guid":{"rendered":"http:\/\/zsaber.com\/blog\/?p=123"},"modified":"2025-09-13T11:14:54","modified_gmt":"2025-09-13T03:14:54","slug":"%e8%84%9a%e6%9c%ac%e6%96%87%e4%bb%b6%e7%9a%84%e4%b8%80%e4%ba%9b%e6%8a%80%e5%b7%a7%e6%94%b6%e9%9b%86","status":"publish","type":"post","link":"http:\/\/zsaber.com\/blog\/p\/123","title":{"rendered":"\u811a\u672c\u6587\u4ef6\u7684\u4e00\u4e9b\u6280\u5de7\u6536\u96c6"},"content":{"rendered":"

\u6700\u8fd1\u56e0\u4e3a\u64b8\u5404\u79cd\u7f16\u8bd1\u811a\u672c, \u78b0\u5230\u4e86\u4e0d\u5c11\u811a\u672c\u6587\u4ef6\u7684\u95ee\u9898, \u800c\u4e14\u5f88\u591a\u4e1c\u897f\u4f60\u641c\u7d22\u90fd\u4e0d\u77e5\u9053\u8be5\u7528\u4ec0\u4e48\u5173\u952e\u8bcd,
\n\u4e8e\u662f\u7559\u4e2a\u6587\u5907\u5fd8\u4e00\u4e0b<\/p>\n

\u53c2\u6570\u76f8\u5173<\/h1>\n

\u83b7\u53d6\u811a\u672c\u6587\u4ef6\u6240\u5728\u76ee\u5f55<\/h2>\n
# sh\necho $(cd "$(dirname "$0")"; pwd)<\/code><\/pre>\n
rem bat\necho %~dp0<\/code><\/pre>\n
\u83b7\u53d6\u811a\u672c\u6587\u4ef6\u81ea\u8eab<\/h2>\n
# sh\necho $0<\/code><\/pre>\n
rem bat\necho %0<\/code><\/pre>\n
\u83b7\u53d6\u6240\u6709\u53c2\u6570<\/h2>\n
# sh\necho "$@"\n\n# \u6ce8\u610f, \u4f20\u9012\u65f6\u9700\u8981\u52a0\u5f15\u53f7, \u5426\u5219\u5e26\u7a7a\u683c\u7684\u53c2\u6570\u4f1a\u88ab\u62c6\u4e3a\u4e24\u4e2a\u53c2\u6570\nsh other.sh "$@"<\/code><\/pre>\n
rem bat\necho %*\n\nrem \u6ce8\u610f, \u4f20\u9012\u65f6\u4e0d\u80fd\u52a0\u5f15\u53f7, \u5426\u5219\u4f1a\u89c6\u4e3a\u4e00\u4e2a\u53c2\u6570\nother.bat %*<\/code><\/pre>\n
\u79fb\u52a8\u5230\u4e0b\u4e00\u4e2a\u53c2\u6570<\/h2>\n
# sh\necho $0\nshift\necho $0\n\n# \u6ce8\u610f, shift \u4f1a\u5f71\u54cd $@\necho $@<\/code><\/pre>\n
rem bat\necho %0\nshift\necho %0\n\nrem \u6ce8\u610f, shift \u4e0d\u4f1a\u5f71\u54cd %*\necho %*<\/code><\/pre>\n
\u83b7\u53d6\u53c2\u6570\u4e2a\u6570<\/h2>\n
# sh\necho $#<\/code><\/pre>\n
rem bat\nset argC=0\nfor %%x in (%*) do set \/A argC+=1\necho %argC%<\/code><\/pre>\n
\u9664\u7b2c\u4e00\u4e2a\u53c2\u6570\u5916\u4f20\u9012\u6240\u6709\u53c2\u6570<\/h2>\n
# sh\n# \u4ece\u7b2c\u4e8c\u4e2a\u5f00\u59cb\nshift\nsh other.sh "$@"\n# \u4ece\u7b2c\u4e09\u4e2a\u5f00\u59cb\nshift 2\nsh other.sh "$@"\n# \u6ce8\u610f: \u5fc5\u987b\u4f7f\u7528 "$@", \u4e0d\u80fd\u5148\u4fdd\u5b58\u4e3a\u53d8\u91cf\u518d\u4f20\u9012, \u5426\u5219\u5e26\u7a7a\u683c\u7684\u53c2\u6570\u4f1a\u88ab\u62c6\u5206\u4e3a\u4e24\u4e2a\n\n# \u6ce8\u610f: \u4ee5\u4e0a\u65b9\u6cd5\u4f1a\u4e22\u5f03 shift \u4e4b\u524d\u7684\u53c2\u6570, \u4f7f\u7528\u524d\u8bb0\u5f97\u4fdd\u5b58\n# \u4e0a\u8ff0\u662f\u6bd4\u8f83\u901a\u7528\u7684\u5b9e\u73b0\u65b9\u5f0f, \u5404\u79cd shell \u90fd\u80fd\u7528, \u4e0d\u4ecb\u610f\u517c\u5bb9\u6027\u7684\u8bdd, \u4e5f\u53ef\u4ee5\u7528\u8fd9\u4e2a\n# \u4ece\u7b2c\u4e8c\u4e2a\u5f00\u59cb\n${@:2}\n# \u4ece\u7b2c\u4e09\u4e2a\u5f00\u59cb\n${@:3}<\/code><\/pre>\n
rem bat\n# \u6ce8\u610f, \u5fc5\u987b\u8981 enabledelayedexpansion, \u5426\u5219 for\/if \u4e2d\u7684 !ALL_PARAMS! \u53d8\u91cf\u65e0\u6cd5\u6b63\u5e38\u5c55\u5f00\nsetlocal enabledelayedexpansion\n\nrem \u4ece\u7b2c\u4e8c\u4e2a\u5f00\u59cb\nset I=0\nfor %%x in (%*) do (\n    set \/a I=I+1\n    if !I! geq 2 (set ALL_PARAMS=!ALL_PARAMS! %%x)\n)\nother.bat %ALL_PARAMS%\n\nrem \u4ece\u7b2c\u4e09\u4e2a\u5f00\u59cb\nset I=0\nfor %%x in (%*) do (\n    set \/a I=I+1\n    if !I! geq 3 (set ALL_PARAMS=!ALL_PARAMS! %%x)\n)\nother.bat %ALL_PARAMS%<\/code><\/pre>\n
\u53d8\u91cf\u5224\u65ad\u76f8\u5173<\/h1>\n
\u5224\u65ad\u53d8\u91cf\u662f\u5426\u4e3a\u7a7a<\/h2>\n
# sh\nif test "x$YourParam0" = "x"\\\n    || test "x$YourParam1" = "x"\\\n    || test "x$YourParam2" = "x"\\\n    ; then\n    echo show usage\n    exit 1\nfi<\/code><\/pre>\n
rem bat\nif not defined YourParam0 goto :usage\nif not defined YourParam1 goto :usage\nif not defined YourParam2 goto :usage\ngoto :run\n:usage\necho show usage\nexit \/b 1\n:run<\/code><\/pre>\n
\u53d8\u91cf\u503c\u6bd4\u8f83<\/h2>\n
# sh\nif test "x-$A" = "x-xxx" ; then\n    echo "A == xxx"\nfi\nif ! test "x-$A" = "x-xxx" ; then\n    echo "A != xxx"\nfi\n\nif test $A -eq $B ; then\n    echo "A == B"\nelif test $A -ne $B ; then\n    echo "A != B"\nelif test $A -gt $B ; then\n    echo "A > B"\nelif test $A -lt $B ; then\n    echo "A < B"\nelif test $A -ge $B ; then\n    echo "A >= B"\nelif test $A -le $B ; then\n    echo "A <= B"\nfi<\/code><\/pre>\n
rem bat\nif "%A%" == "xxx" (echo A == xxx)\nif not "%A%" == "xxx" (echo A != xxx)\n\nif %A% equ %B% (echo A == B)\nif %A% neq %B% (echo A != B)\nif %A% gtr %B% (echo A > B)\nif %A% lss %B% (echo A < B)\nif %A% geq %B% (echo A >= B)\nif %A% leq %B% (echo A <= B)<\/code><\/pre>\n
\u53d8\u91cf\u503c\u66ff\u6362<\/h2>\n
# sh\nMyVar=`echo $MyVar | sed -e "s\/ReplaceFrom\/ReplaceTo\/g"`<\/code><\/pre>\n
rem bat\nset MyVar=!MyVar:ReplaceFrom=ReplaceTo!<\/code><\/pre>\n
\u53d8\u91cf\u6570\u503c\u8ba1\u7b97<\/h2>\n
# sh\nRESULT=$((A+B))<\/code><\/pre>\n
rem bat\nset \/a RESULT=A+B<\/code><\/pre>\n
\u53d8\u91cf\u622a\u53d6\u76f8\u5173<\/h1>\n
\u622a\u53d6\u7236\u8def\u5f84<\/h2>\n
# sh\nSRC=a\/b\/c.txt\nRESULT=${SRC%[\/\\\\]*}\necho $RESULT<\/code><\/pre>\n
rem bat\nset SRC=a\/b\/c.txt\nfor %%a in ("%SRC%\\..") do set RESULT=%%~fa\necho %RESULT%<\/code><\/pre>\n
\u622a\u53d6\u6587\u4ef6\u540d<\/h2>\n
# sh\nSRC=a\/b\/c.txt\nRESULT=${SRC##*[\/\\\\]}\necho $RESULT<\/code><\/pre>\n
rem bat\nset SRC=a\/b\/c.txt\nfor %%a in ("%SRC%") do set RESULT=%%~nxa\necho %RESULT%<\/code><\/pre>\n
\u622a\u53d6\u9664\u6269\u5c55\u540d\u5916\u7684\u6587\u4ef6\u540d<\/h2>\n
# sh\nSRC=a\/b\/c.txt\nRESULT=$(basename ${SRC%.*})\necho $RESULT<\/code><\/pre>\n
rem bat\nset SRC=a\/b\/c.txt\nfor %%a in ("%SRC%") do set RESULT=%%~na\necho %RESULT%<\/code><\/pre>\n
\u622a\u53d6\u6269\u5c55\u540d<\/h2>\n
# sh\nSRC=a\/b\/c.txt\nRESULT=${SRC##*.}\necho $RESULT<\/code><\/pre>\n
rem bat\nset SRC=a\/b\/c.txt\nfor %%a in ("%SRC%") do set RESULT=%%~xa\nset RESULT=%RESULT:~1,999%\necho %RESULT%<\/code><\/pre>\n
\u7edd\u5bf9\u8def\u5f84\u8f6c\u6362\u4e3a\u76f8\u5bf9\u8def\u5f84<\/h2>\n
# sh\nRESULT=`realpath --relative-to="$REF_PATH" "$ABS_PATH"`<\/code><\/pre>\n
rem bat\n@echo off\nsetlocal\n\nset WORK_DIR=%~dp0\nset ABS_PATH=%~2%\nset REF_PATH=%~3%\n\nif not defined ABS_PATH goto :usage\nif not defined REF_PATH goto :usage\ngoto :run\n:usage\necho usage:\necho   path_abs2rel.bat RESULT ABS_PATH REF_PATH\nexit \/b 1\n:run\n\nfor %%i in ("%REF_PATH%") do set REF_PATH_TMP=%%~fi\nfor %%i in ("%ABS_PATH%") do set ABS_PATH_TMP=%%~fi\n\nif not exist "%REF_PATH_TMP%" (\n    RESULT=%ABS_PATH_TMP%\n    goto :return_result\n)\nif not exist "%ABS_PATH_TMP%" (\n    RESULT=%ABS_PATH_TMP%\n    goto :return_result\n)\n\nset SAME_PATH=%REF_PATH_TMP%\nset SAME_PATH_MATCH=0\n:same_path_loop\ncall set "MATCH_TMP=%%ABS_PATH_TMP:%SAME_PATH%=%%"\nif not "%MATCH_TMP%" == "%ABS_PATH_TMP%" (\n    set SAME_PATH_MATCH=1\n    goto :same_path_loop_end\n)\nset SAME_PATH_OLD=%SAME_PATH%\nfor %%a in ("%SAME_PATH%\\..") do set SAME_PATH=%%~fa\nif "%SAME_PATH%" == "%SAME_PATH_OLD%" goto :same_path_loop_end\ngoto :same_path_loop\n:same_path_loop_end\n\nif not %SAME_PATH_MATCH% == 1 (\n    RESULT=%ABS_PATH_TMP%\n    goto :return_result\n)\n\nset RESULT=\n\ncall set "REF_PATH_TMP=%%REF_PATH_TMP:%SAME_PATH%=%%"\n:abs_parent_loop\nif "x%REF_PATH_TMP%" == "x" (\n    set RESULT=.\n    goto :abs_parent_loop_end\n)\nset REF_PATH_TMP_OLD=%REF_PATH_TMP%\nfor %%a in ("%REF_PATH_TMP%\\..") do set REF_PATH_TMP=%%~fa\nif "%REF_PATH_TMP%" == "%REF_PATH_TMP_OLD%" goto :abs_parent_loop_end\nif "x%RESULT%" == "x" (\n    set RESULT=..\n) else (\n    set RESULT=%RESULT%\\..\n)\ngoto :abs_parent_loop\n:abs_parent_loop_end\n\ncall set "RESULT_TMP=%%ABS_PATH_TMP:%SAME_PATH%=%%"\nset RESULT=%RESULT%%RESULT_TMP%\n\n:return_result\nendlocal & set "%1=%RESULT%"<\/code><\/pre>\n
\u76f8\u5bf9\u8def\u5f84\u8f6c\u6362\u4e3a\u7edd\u5bf9\u8def\u5f84<\/h2>\n
# sh\nRESULT=$(cd -- "$RELATIVE_PATH" && pwd)<\/code><\/pre>\n
rem bat\nfor %%i in ("%RELATIVE_PATH%") do set RESULT=%%~fi<\/code><\/pre>\n
\u8fd4\u56de\u503c\u5224\u65ad\u76f8\u5173<\/h1>\n
\u51fd\u6570\u8c03\u7528\u548c\u8fd4\u56de\u503c<\/h2>\n
# sh\nfunction add()\n{\n    echo "$1 + $2 = $(($1+$2))"\n    return 0\n}\nRESULT=`add 2 3`\necho "run success: $?"\necho "run result: $RESULT"<\/code><\/pre>\n
rem bat\ncall :add RESULT 2 3\necho run success: %errorlevel%\necho run result: %RESULT%\ngoto :EOF\n\n:add\nsetlocal\nset \/a _RESULT=%2+%3\nendlocal & set "%1=%_RESULT%"\nexit \/b 0<\/code><\/pre>\n
\u9000\u51fa\u5f53\u524d\u811a\u672c<\/h2>\n
N \u4e3a\u4efb\u610f\u6574\u6570<\/p>\n
# sh\nexit N<\/code><\/pre>\n
rem bat\nexit \/b N<\/code><\/pre>\n
\u83b7\u53d6\u8fd4\u56de\u503c\u548c\u5224\u65ad\u8fd4\u56de\u503c<\/h2>\n
# sh\nsh xxx.sh\nresult = "$?"\nif test "$result" = "0"; then\n    echo success\nfi\nif test ! "$result" = "0"; then\n    echo failed\nfi<\/code><\/pre>\n
rem bat\ncall xxx.bat\nset result = %errorlevel%\nif "%result%" == "0" (\n    echo success\n)\nif not "%result%" == "0" (\n    echo failed\n)\n\nrem \u5982\u679c\u5728 if \u4e2d\u4f7f\u7528 error level, \u9700\u8981\u8fd9\u6837:\nsetlocal enabledelayedexpansion\nif "1" == "1" (\n    call xxx.bat\n    if "!errorlevel!" == "0" (\n        echo success\n    )\n)<\/code><\/pre>\n
\u6267\u884c\u5916\u90e8\u547d\u4ee4\u5e76\u83b7\u53d6\u8f93\u51fa<\/h2>\n
# sh\nresult = `git config user.name`<\/code><\/pre>\n
rem bat\nfor \/f "delims=" %%a in ('git config user.name') do @set result=%%a\n\nrem \u4f46\u662f, \u4e0a\u8ff0\u53ea\u80fd\u5904\u7406\u53ea\u6709\u5355\u884c\u8f93\u51fa\u7684\u547d\u4ee4, \u5bf9\u4e8e\u591a\u884c\u8f93\u51fa\u547d\u4ee4, \u5fc5\u987b\u7528\u66f4\u5947\u8469\u7684\u65b9\u5f0f:\nsetlocal enabledelayedexpansion\nrem \u6ce8\u610f\u8fd9\u8fb9\u5fc5\u987b\u8981\u6709\u4e24\u4e2a\u6362\u884c\n(set NLM=^\n\n)\nset NL=^^^%NLM%%NLM%^%NLM%%NLM%\n(\n    for \/f "tokens=*" %%a in ('dir \/b') do (\n        if not defined result (\n            set result=%%a\n        ) else (\n            set result=!result!%NL%%%a\n        )\n    )\n) >nul 2>&1\nrem \u6ce8\u610f errorlevel \u65e0\u6cd5\u83b7\u53d6\u5230\u547d\u4ee4\u7684\u9519\u8bef\u7801\nrem echo %errorlevel%\nrem \u6ce8\u610f\u8fd9\u4e2a\u611f\u8c08\u53f7, \u4ee5\u53ca enabledelayedexpansion\necho !result!<\/code><\/pre>\n
\u7ba1\u9053\u76f8\u5173<\/h1>\n
\u5ffd\u7565\u8f93\u51fa\u548c\u9519\u8bef\u4fe1\u606f<\/h2>\n
# sh\nsh xxx.sh >\/dev\/null 2>&1<\/code><\/pre>\n
rem bat\ncall xxx.bat >nul 2>&1\n\nrem ignore error only\ncall xxx.bat 2>nul<\/code><\/pre>\n
\u8f93\u51fa\u548c\u9519\u8bef\u4fe1\u606f\u90fd\u8f93\u51fa\u5230\u540c\u4e00\u4e2a\u6587\u4ef6<\/h2>\n
# sh\nsh xxx.sh >filepath.log 2>&1<\/code><\/pre>\n
rem bat\ncall xxx.bat >filepath.log 2>&1<\/code><\/pre>\n
\u5176\u5b83<\/h1>\n
\u5224\u65ad\u6587\u4ef6\u6216\u76ee\u5f55\u662f\u5426\u5b58\u5728<\/h2>\n
# sh\nif test -e "filepath"; then\n    echo exist\nfi<\/code><\/pre>\n
rem bat\nif exist "filepath" (\n    echo exist\n)<\/code><\/pre>\n
\u5220\u9664\u7a7a\u76ee\u5f55<\/h2>\n
# sh\nfind "$DST_PATH" -depth -type d -empty -exec rm -rf {} ';' >\/dev\/null 2>&1<\/code><\/pre>\n
rem bat\nrem \u8fd9\u79cd\u65b9\u5f0f\u5728 cygwin \u4e0b\u65e0\u6cd5\u4f7f\u7528, \u56e0\u4e3a cygwin \u91cc\u9762\u4e5f\u6709 sort\nfor \/f "delims=" %%a in ('dir \/s\/b\/ad "%DST_PATH%" ^| sort \/r') do rd \/q "%%a" 2>nul\n\nrem \u8fd9\u79cd\u65b9\u5f0f\u5728 cygwin \u4e0b\u4e5f\u80fd\u591f\u6b63\u5e38, \u4f46\u662f\u4e00\u6b21\u53ea\u80fd\u5220\u9664\u76ee\u5f55\u5c42\u6b21\u6700\u6df1\u7684\u4e00\u7ea7, \u6700\u7b80\u5355\u7c97\u66b4\u7684\u65b9\u5f0f\u5c31\u662f\u591a\u6267\u884c\u51e0\u904d\nfor \/d \/r "%DST_PATH%" %%a in (*) do dir \/b\/a "%%a" | findstr . >nul || rmdir "%%a"\nfor \/d \/r "%DST_PATH%" %%a in (*) do dir \/b\/a "%%a" | findstr . >nul || rmdir "%%a"\nfor \/d \/r "%DST_PATH%" %%a in (*) do dir \/b\/a "%%a" | findstr . >nul || rmdir "%%a"<\/code><\/pre>\n
\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u6233<\/h2>\n
# sh\nRESULT=$(date +%s)\necho $RESULT<\/code><\/pre>\n
rem bat\ncall :GetUnixTime RESULT\necho %RESULT%\nexit \/b 0\n\n:GetUnixTime\n(for \/f %%i in ('powershell -command "[int](([datetime]::UtcNow - [datetime]'1970-01-01').TotalSeconds)"') do set ut=%%i) >nul 2>&1\nif "%ERRORLEVEL%" == "0" if not "%ut%" == "" (endlocal & set "%1=!ut!" & goto :EOF)\nfor \/f %%x in ('wmic path win32_utctime get \/format:list ^<nul ^| findstr "="') do set %%x\nset \/a z=(14-100%Month%%%100)\/12, y=10000%Year%%%10000-z\nset \/a ut=y*365+y\/4-y\/100+y\/400+(153*(100%Month%%%100+12*z-3)+2)\/5+Day-719469\nset \/a ut=ut*86400+100%Hour%%%100*3600+100%Minute%%%100*60+100%Second%%%100\ndel \/f\/s\/q TempWmicBatchFile.bat >nul 2>&1\nendlocal & set "%1=%ut%" & goto :EOF<\/code><\/pre>\n
\u83b7\u53d6\u6587\u4ef6\u5927\u5c0f<\/h2>\n
# sh\nRESULT=`du -b "$FILE_PATH" | awk '{print $1}'`\necho $RESULT<\/code><\/pre>\n
rem bat\nfor \/f "delims=" %%a in ('type "%FILE_PATH%"') do set RESULT=%%~za\necho %RESULT%<\/code><\/pre>\n
\u5176\u4ed6\u6ce8\u610f\u70b9<\/h1>\n
sh<\/h2>\n
shell \u5dee\u5f02<\/h3>\n
\u64b8 sh \u811a\u672c\u65f6\u6700\u597d\u5c3d\u91cf\u7b26\u5408 POSIX \u6807\u51c6, \u76ee\u524d\u78b0\u5230\u7684\u4e3b\u8981\u5dee\u5f02\u6709,
\nbash \u548c dash \u7684\u5dee\u5f02, GNU \u548c BSD \u90e8\u5206\u547d\u4ee4\u7684\u5dee\u5f02<\/p>\n
\u4e2d\u62ec\u53f7\u53d8\u91cf\u6bd4\u8f83<\/h3>\n
if [[ $my_var = "" ]]; then\n    echo "empty"\nfi<\/code><\/pre>\n
\u4e2d\u62ec\u53f7\u4f3c\u4e4e\u5e76\u4e0d\u662f\u6240\u6709 shell \u90fd\u652f\u6301, \u63a8\u8350\u7684\u505a\u6cd5\u662f\u7528 test<\/p>\n
if test "x$my_var" = "x" ; then\n    echo "empty"\nfi<\/code><\/pre>\n
\u5bf9\u4e8e\u76ee\u5f55\u7684\u5904\u7406<\/h3>\n
\u4ee5 cp \u4e3a\u4f8b, \u5efa\u8bae\u8fd9\u4e48\u505a<\/p>\n
cp -r src0\/src1\/. dst0\/dst1\/<\/code><\/pre>\n
\u6ce8\u610f src \u672b\u5c3e\u7684 \/.<\/code> \u548c dst \u672b\u5c3e\u7684 \/<\/code>,
\n\u4e0d\u6309\u7167\u8fd9\u4e48\u5199\u7684\u8bdd, \u5728\u4e0d\u540c shell \u4e0b\u53ef\u80fd\u4f1a\u6709\u610f\u5916\u7684\u7ed3\u679c<\/p>\n
bat<\/h2>\n
\u8f6c\u4e49<\/h3>\n
\u6ca1\u9519, \u6279\u5904\u7406\u5c31\u662f\u80fd\u628a\u8fd9\u4e48\u57fa\u672c\u7684\u4e1c\u897f\u4e5f\u641e\u5c4e, \u5173\u4e8e\u8f6c\u4e49\u53ef\u4ee5\u53c2\u8003 \u8fd9\u91cc<\/a>,
\n\u8fd9\u8fb9\u4e5f\u6284\u4e00\u4efd\u4ee5\u9632\u4e07\u4e00:<\/p>\n
%   %%   May not always be required in doublequoted strings, just try\n^   ^^   May not always be required in doublequoted strings, but it won't hurt\n&   ^&\n<   ^<\n>   ^>\n|   ^|\n'   ^'   Required only in the FOR \/F "subject" (i.e. between the parenthesis), unless backq is used\n`   ^`   Required only in the FOR \/F "subject" (i.e. between the parenthesis), if backq is used\n,   ^,   Required only in the FOR \/F "subject" (i.e. between the parenthesis), even in doublequoted strings\n;   ^;\n=   ^=\n(   ^(\n)   ^)\n!   ^^!  Required only when delayed variable expansion is active\n"   ""   Required only inside the search pattern of FIND\n\\   \\\\   Required only inside the regex pattern of FINDSTR\n[   \\[\n]   \\]\n"   \\"\n.   \\.\n*   \\*\n?   \\?<\/code><\/pre>\n
\u5f15\u53f7<\/h3>\n
set v="123"\nset v1="%v%"\nrem \u6700\u7ec8 v1 \u4f1a\u662f ""123""\nrem \u8981\u786e\u4fdd\u6b63\u786e\u7684\u8bdd, \u6700\u597d\u8fd9\u6837:\nset v2="%~v%"<\/code><\/pre>\n
\u5efa\u8bae\u8bbe\u7f6e<\/h3>\n
\u5efa\u8bae\u6279\u5904\u7406\u6587\u4ef6\u5f00\u5934\u90fd\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9:<\/p>\n
rem \u9ed8\u8ba4\u5173\u6389\u607c\u4eba\u7684 echo\n@echo off\n\nrem \u4e0d\u52a0\u7684\u8bdd, \u811a\u672c\u5185\u7684\u53d8\u91cf\u4f1a\u5f71\u54cd\u5916\u90e8\u53d8\u91cf, \u53c8\u662f\u4e00\u4e2a\u86cb\u75bc\u7684\u9ed8\u8ba4\u884c\u4e3a\nsetlocal\n\nrem \u5982\u679c\u60f3\u5728 for \u5faa\u73af\u5185\u4fee\u6539\u5e76\u8bbf\u95ee\u53d8\u91cf, \u5fc5\u987b\u6dfb\u52a0\u8be5\u8bbe\u7f6e,\nrem \u5e76\u4e14\u4f7f\u7528 !VAR! \u8bbf\u95ee\u53d8\u91cf, \u5426\u5219\u53d8\u91cf\u4fee\u6539\u4e0d\u4f1a\u751f\u6548\nsetlocal enabledelayedexpansion<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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