grep的-r/-R/--recursive参数。

最新推荐文章于 2025-07-31 15:15:09 发布
转载 最新推荐文章于 2025-07-31 15:15:09 发布 · 1k 阅读 · 0 ·
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原文链接：https://my.oschina.net/jccpp/blog/125590
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#r语言

本文介绍了如何使用grep命令的-r参数进行递归搜索文件夹中的指定内容，通过具体的示例展示了如何查找包含特定字符串的所有文件。

为什么80%的码农都做不了架构师？>>>   hot3.png

grep有一个-r/-R/--recursive参数。相当于cp -r的功能。用于搜索一个目录下所有的文件（包括子目录里的文件）。例如： 

grep -r Refund ./*

转载于:https://my.oschina.net/jccpp/blog/125590

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须知 参数列表的那些参数是上层传到下层的，是下层需要知道的关于上层节点的信息； 返回值是下层传回上层的，是上层需要知道的下面所有节点的情况信息（例如，左子树的信息）； 当参数中有引用时，注意此参数无副本，需要在整个流程中维护此参数的一致性，例如push_back()之后记得在return前pop_back() 1. 体会返回值和参数在递归中 如何使用1.1 path sum Given a bin
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课程视频地址： https://edu.youkuaiyun.com/course/detail/28645 搜索文档树find_all方法-recursive参数 recursive参数 文档内容如下： html_doc = “”" The Dormouse's story The Dormouse's story Once upon a time there were three little sist...
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的强大命令，它会遍历指定目录及其所有子目录中的文件，查找匹配的文本模式。是 Linux/Unix 中用于。
grep技巧(-r):在某一目录下递归[所有子目录]查找某一字串:+文件路径
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转自：http://zhumeng8337797.blog.163.com/blog/static/1007689142011350151438/ 在某一目录下递归[所有子目录]查找某一字串: grep -r “字串” 目录名 就是加一个-r参数，请看man page: -R, -r, –recursive Read all files under each director
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修改后，报错： ERROR: qtwayland-native-5.15.3+gitAUTOINC+f9dfeb6e72-r0 do_configure: Error calling /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/recipe-sysroot-native/usr/bin/qmake -makefile -o Makefile QT_BUILD_PARTS-=examples QT_BUILD_PARTS-=tests -no-feature-wayland-vulkan-server-buffer /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/git/src/qtwaylandscanner -- -no-feature-wayland-brcm -no-feature-wayland-client -no-feature-wayland-drm-egl-server-buffer -no-feature-wayland-egl -no-feature-wayland-libhybris-egl-server-buffer -no-feature-wayland-server -no-feature-wayland-vulkan-server-buffer -no-feature-xcomposite-egl -no-feature-xcomposite-glx ERROR: qtwayland-native-5.15.3+gitAUTOINC+f9dfeb6e72-r0 do_configure: ExecutionError('/DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/temp/run.do_configure.102733', 1, None, None) ERROR: Logfile of failure stored in: /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/temp/log.do_configure.102733 Log data follows: | DEBUG: Executing python function extend_recipe_sysroot | NOTE: Direct dependencies are ['/DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/poky/meta-joynext/meta-qt5/recipes-qt/qt5/qtbase-native_git.bb:do_populate_sysroot', '/DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/poky/meta/recipes-devtools/quilt/quilt-native_0.67.bb:do_populate_sysroot', 'virtual:native:/DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/poky/meta-joynext/meta-qt5/recipes-qt/qt5/qtdeclarative_git.bb:do_populate_sysroot', 'virtual:native:/DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/poky/meta/recipes-devtools/pkgconfig/pkgconfig_git.bb:do_populate_sysroot', 'virtual:native:/DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/poky/meta/recipes-graphics/wayland/wayland_1.20.0.bb:do_populate_sysroot'] | NOTE: Installed into sysroot: [] | NOTE: Skipping as already exists in sysroot: ['qtbase-native', 'quilt-native', 'qtdeclarative-native', 'pkgconfig-native', 'wayland-native', 'zlib-native', 'dbus-native', 'expat-native', 'libffi-native', 'python3-native', 'libxml2-native', 'xz-native', 'libtool-native', 'glib-2.0-native', 'gettext-minimal-native', 'cmake-native', 'texinfo-dummy-native', 'readline-native', 'ncurses-native', 'openssl-native', 'libtirpc-native', 'sqlite3-native', 'gdbm-native', 'util-linux-libuuid-native', 'bzip2-native', 'libnsl2-native', 'libpcre-native', 'gettext-native', 'util-linux-native', 'zstd-native', 'curl-native', 'perl-native', 'libpcre2-native', 'libcap-ng-native', 'make-native'] | DEBUG: Python function extend_recipe_sysroot finished | DEBUG: Executing shell function qmake5_base_preconfigure | DEBUG: Shell function qmake5_base_preconfigure finished | DEBUG: Executing shell function do_configure | NOTE: qmake using profiles: '/DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/git/src/qtwaylandscanner' | NOTE: qmake prevar substitution: ' QT_BUILD_PARTS-=examples QT_BUILD_PARTS-=tests -no-feature-wayland-vulkan-server-buffer' | NOTE: qmake configure substitution: ' -no-feature-wayland-brcm -no-feature-wayland-client -no-feature-wayland-drm-egl-server-buffer -no-feature-wayland-egl -no-feature-wayland-libhybris-egl-server-buffer -no-feature-wayland-server -no-feature-wayland-vulkan-server-buffer -no-feature-xcomposite-egl -no-feature-xcomposite-glx' | Usage: /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/recipe-sysroot-native/usr/bin/qmake [mode] [options] [files] | | QMake has two modes, one mode for generating project files based on | some heuristics, and the other for generating makefiles. Normally you | shouldn't need to specify a mode, as makefile generation is the default | mode for qmake, but you may use this to test qmake on an existing project | | Mode: | -project Put qmake into project file generation mode | In this mode qmake interprets [files] as files to | be added to the .pro file. By default, all files with | known source extensions are added. | Note: The created .pro file probably will | need to be edited. For example add the QT variable to | specify what modules are required. | -makefile Put qmake into makefile generation mode (default) | In this mode qmake interprets files as project files to | be processed, if skipped qmake will try to find a project | file in your current working directory | | Warnings Options: | -Wnone Turn off all warnings; specific ones may be re-enabled by | later -W options | -Wall Turn on all warnings | -Wparser Turn on parser warnings | -Wlogic Turn on logic warnings (on by default) | -Wdeprecated Turn on deprecation warnings (on by default) | | Options: | * You can place any variable assignment in options and it will be * | * processed as if it was in [files]. These assignments will be * | * processed before [files] by default. * | -o file Write output to file | -d Increase debug level | -t templ Overrides TEMPLATE as templ | -tp prefix Overrides TEMPLATE so that prefix is prefixed into the value | -help This help | -v Version information | -early All subsequent variable assignments will be | parsed right before default_pre.prf | -before All subsequent variable assignments will be | parsed right before [files] (the default) | -after All subsequent variable assignments will be | parsed after [files] | -late All subsequent variable assignments will be | parsed right after default_post.prf | -norecursive Don't do a recursive search | -recursive Do a recursive search | -set <prop> <value> Set persistent property | -unset <prop> Unset persistent property | -query <prop> Query persistent property. Show all if <prop> is empty. | -qtconf file Use file instead of looking for qt.conf | -cache file Use file as cache [makefile mode only] | -spec spec Use spec as QMAKESPEC [makefile mode only] | -nocache Don't use a cache file [makefile mode only] | -nodepend Don't generate dependencies [makefile mode only] | -nomoc Don't generate moc targets [makefile mode only] | -nopwd Don't look for files in pwd [project mode only] | ***Unknown option -no-feature-wayland-vulkan-server-buffer | ERROR: Error calling /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/recipe-sysroot-native/usr/bin/qmake -makefile -o Makefile QT_BUILD_PARTS-=examples QT_BUILD_PARTS-=tests -no-feature-wayland-vulkan-server-buffer /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/git/src/qtwaylandscanner -- -no-feature-wayland-brcm -no-feature-wayland-client -no-feature-wayland-drm-egl-server-buffer -no-feature-wayland-egl -no-feature-wayland-libhybris-egl-server-buffer -no-feature-wayland-server -no-feature-wayland-vulkan-server-buffer -no-feature-xcomposite-egl -no-feature-xcomposite-glx | WARNING: /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/temp/run.do_configure.102733:212 exit 1 from 'exit 1' | WARNING: Backtrace (BB generated script): | #1: bbfatal_log, /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/temp/run.do_configure.102733, line 212 | #2: die, /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/temp/run.do_configure.102733, line 202 | #3: qmake5_base_do_configure, /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/temp/run.do_configure.102733, line 188 | #4: do_configure, /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/temp/run.do_configure.102733, line 156 | #5: main, /DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/build-qti-distro-rb-debug/tmp-glibc/work/x86_64-linux/qtwayland-native/5.15.3+gitAUTOINC+f9dfeb6e72-r0/temp/run.do_configure.102733, line 216 ERROR: Task (virtual:native:/DATA/Joynext/zhao_w1/SA8538/LE.PRODUCT.2.1.R3/poky/meta-joynext/meta-qt5/recipes-qt/qt5/qtwayland_git.bb:do_configure) failed with exit code '1' WARNING: Recipe inherits features_check but doesn't use it
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