linux cat><<

在Linux中，cat><<EOF是一种重定向输入的方法，它会将输入的内容重定向到一个文件，并在输入内容中遇到EOF时停止输入。这种方法常用于在命令行中输入多行文本，如创建一个新文件或向现有文件中添加内容。

另外需要注意的是，EOF只是一种标识符，它可以替换成任何你喜欢的字符，只要它不在输入的内容中出现即可。

相关问题

linux 中cat>>file<<eof

是一种将多行文本输入到文件中的快捷方式。具体用法如下：

1. 打开终端并进入需要输入的目录。

2. 输入命令 `cat >> filename << EOF`，其中 `filename` 是要输入的文件名，`EOF` 是一个自定义的分界符，可以是任何字符串。

3. 在接下来的行中输入要添加到文件中的文本，按 Enter 键输入新行。

4. 当你输入最后一行时，输入 `EOF` 并按下 Enter 键。

5. 然后你就可以退出文件并查看文件内容。

例如，如果你要将以下文本输入到名为 `test.txt` 的文件中：

Hello, world!
This is a test file.

你可以使用以下命令：

cat >> test.txt << EOF
Hello, world!
This is a test file.
EOF

<builders> <org.jenkinsci.plugins.conditionalbuildstep.singlestep.SingleConditionalBuilder plugin="conditional-buildstep@1.4.2"> <condition class="org.jenkins_ci.plugins.run_condition.contributed.ShellCondition" plugin="run-condition@1.5"> <command>if git show --summary HEAD | grep -q -E "\(cherry picked from commit \b[0-9a-f]{5,40}\b\)"; then exit 1 fi</command> </condition> <buildStep class="hudson.tasks.Shell"> <command>./scripts/checkpatch.pl --min-conf-desc-length=1 --ignore GERRIT_CHANGE_ID -g HEAD </command> <configuredLocalRules/> </buildStep> <runner class="org.jenkins_ci.plugins.run_condition.BuildStepRunner$Run" plugin="run-condition@1.5"/> </org.jenkinsci.plugins.conditionalbuildstep.singlestep.SingleConditionalBuilder> <hudson.tasks.Shell> <command>NCPU=$(expr $(nproc --all ) / 2) make O=build-${BUILD_ID} -s defconfig make O=build-${BUILD_ID} -j$NCPU -s Image make O=build-${BUILD_ID} -j$NCPU -s modules make O=build-${BUILD_ID} INSTALL_MOD_PATH=../install-${BUILD_ID} -s modules_install mkdir -p install-${BUILD_ID}/boot/ KERNELVER=$(cat build-${BUILD_ID}/include/config/kernel.release 2> /dev/null) cat build-${BUILD_ID}/arch/arm64/boot/Image > install-${BUILD_ID}/boot/Image-$KERNELVER cp build-${BUILD_ID}/System.map install-${BUILD_ID}/boot/System.map-$KERNELVER cp build-${BUILD_ID}/.config install-${BUILD_ID}/boot/config-$KERNELVER tar -cJf install-${BUILD_ID}/linux-$KERNELVER.tar.xz -C install-${BUILD_ID}/ boot lib</command> <configuredLocalRules/> </hudson.tasks.Shell> <hudson.tasks.Shell> <command>cd $HOME/src/linux git fetch -p -t git pull </command> <configuredLocalRules/> </hudson.tasks.Shell> </builders> 这是一段Jenkins job的定义，请把它转成对应的JJB的yaml格式配置文件

对应的JJB的yaml格式配置文件如下所示：

- builders:
  - conditional-step:
      conditional-buildstep@1.4.2:
        condition:
          shell-condition:
            run-condition@1.5:
              command: "if git show --summary HEAD | grep -q -E \"\\(cherry picked from commit \\b[0-9a-f]{5,40}\\b\\)\"; then exit 1 fi"
        buildStep:
          shell:
            command: "./scripts/checkpatch.pl --min-conf-desc-length=1 --ignore GERRIT_CHANGE_ID -g HEAD"
            configuredLocalRules: ""
        runner:
          run-build-step-runner:
            run-condition@1.5: ""
  - shell:
      command: "NCPU=$(expr $(nproc --all ) / 2) make O=build-${BUILD_ID} -s defconfig make O=build-${BUILD_ID} -j$NCPU -s Image make O=build-${BUILD_ID} -j$NCPU -s modules make O=build-${BUILD_ID} INSTALL_MOD_PATH=../install-${BUILD_ID} -s modules_install mkdir -p install-${BUILD_ID}/boot/ KERNELVER=$(cat build-${BUILD_ID}/include/config/kernel.release 2> /dev/null) cat build-${BUILD_ID}/arch/arm64/boot/Image > install-${BUILD_ID}/boot/Image-$KERNELVER cp build-${BUILD_ID}/System.map install-${BUILD_ID}/boot/System.map-$KERNELVER cp build-${BUILD_ID}/.config install-${BUILD_ID}/boot/config-$KERNELVER tar -cJf install-${BUILD_ID}/linux-$KERNELVER.tar.xz -C install-${BUILD_ID}/ boot lib"
      configuredLocalRules: ""
  - shell:
      command: "cd $HOME/src/linux git fetch -p -t git pull"
      configuredLocalRules: ""