readonly REPO_DIR="$(dirname "$(readlink -m "${0}")")"
时间: 2023-09-28 20:08:07 浏览: 54
这是一个用于定义只读变量的命令,它将变量`REPO_DIR`的值设置为当前脚本的目录。解释一下这个命令:
- `readlink -m "${0}"`获取当前脚本的绝对路径。
- `dirname`命令获取该绝对路径的目录名,即脚本所在的目录。
- `$(...)`是命令替换的语法,它会将命令的输出结果替换为这个命令的执行结果。
- 最终,`readonly REPO_DIR="$(dirname "$(readlink -m "${0}")")"`将变量`REPO_DIR`的值设置为当前脚本所在的目录,并将其设置为只读变量。
相关问题
请将下述shell语言转换为python语言:if [ $HELPs_project_directory ]; then printf "" else # because on sunway platfrom, file name contain symbolic link can not open # thus we should make sure the HELPs directory do not contain symbolic link # first obtain the script directory, this path may contain symbolic link readonly script_directory="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )" # then remove symbolic link if it exist, the absolute path now obtained readonly HELPs_script_directory=$(readlink -f ${script_directory}) readonly HELPs_project_directory=`dirname ${HELPs_script_directory}` readonly HELPs_build_directory=${HELPs_project_directory}/build readonly HELPs_document_directory=${HELPs_project_directory}/document readonly HELPs_third_party_directory=${HELPs_project_directory}/third_party readonly HELPs_output_directory=${HELPs_project_directory}/output readonly HELPs_HPC_script_directory=${HELPs_project_directory}/HPC_script fi
以下是将上述Shell代码转换为Python代码的示例:
```python
import os
if os.environ.get('HELPs_project_directory'):
print("")
else:
# because on sunway platfrom, file name contain symbolic link can not open
# thus we should make sure the HELPs directory do not contain symbolic link
# first obtain the script directory, this path may contain symbolic link
script_directory = os.path.dirname(os.path.realpath(__file__))
# then remove symbolic link if it exist, the absolute path now obtained
HELPs_script_directory = os.path.realpath(script_directory)
HELPs_project_directory = os.path.dirname(HELPs_script_directory)
HELPs_build_directory = os.path.join(HELPs_project_directory, 'build')
HELPs_document_directory = os.path.join(HELPs_project_directory, 'document')
HELPs_third_party_directory = os.path.join(HELPs_project_directory, 'third_party')
HELPs_output_directory = os.path.join(HELPs_project_directory, 'output')
HELPs_HPC_script_directory = os.path.join(HELPs_project_directory, 'HPC_script')
```
在上述Python代码中,我们使用`os`模块来获取路径和目录,并使用相应的函数替代Shell中的命令。通过这种方式,我们可以在Python中实现与原始Shell代码相同的逻辑。请注意,根据具体情况,你可能需要根据实际需求进行调整和修改。
<!-- NOTE: "physical_partition" are listed in order and apply to UFS devices that have physical partitions --> <!-- This is LUN 0 - HLOS LUN" --> <!-- NOTE: All partitions in LUN0 get overwritten by OS installer these are only used for FFU --> <physical_partition> <partition label="ssd" size_in_kb="8" type="2C86E742-745E-4FDD-BFD8-B6A7AC638772" bootable="false" readonly="false" filename="" /> <!-- QNX Host partitions --> <partition label="vbmeta_a" size_in_kb="64" type="ca51803e-4d9a-4fa5-b8f1-f5fa05f20f89" bootable="false" readonly="true" filename="host_vbmeta_la.img"/> <partition label="system_a" size_in_kb="3145728" type="97D7B011-54DA-4835-B3C4-917AD6E73D74" bootable="false" readonly="false" filename="system_la.img"/> <partition label="ifs2_a" size_in_kb="262144" type="133e4a08-4def-11e6-beb8-9e71128cae77" bootable="false" readonly="true" filename="ifs2_la.img"/> <partition label="bluetooth_a" size_in_kb="2048" type="6cb747f1-c2ef-4092-add0-ca39f79c7af4" bootable="false" readonly="true" filename="BTFM.bin"/> <!-- LA Guest partitions --> <partition label="la_vbmeta_a" size_in_kb="64" type="4b7a15d6-322c-42ac-8110-88b7da0c5d77" bootable="false" readonly="true" filename="vbmeta.img"/> <partition label="la_boot_a" size_in_kb="65536" type="8E2F94FF-389A-4B97-A0D3-A13B5CEC7C36" bootable="false" readonly="false" filename="boot.img"/> <partition label="la_persist" size_in_kb="32768" type="ac15448d-5948-4d1b-9309-f737870383d5" bootable="false" readonly="false" filename="persist.img"/> <partition label="la_userdata" size_in_kb="12582912" type="6E6D4ADD-DD73-4D05-AE54-2CD16925DD65" bootable="false" readonly="false" filename="userdata.img" sparse="true"/> <partition label="last_parti" size_in_kb="0" type="00000000-0000-0000-0000-000000000000" system="true" readonly="true" filename="" /> </physical_partition>
这也是一个XML配置文件,其中包含了一些描述物理分区的信息,用于控制某些设备的分区行为。其中的每个物理分区都包含了一些属性,如标签、大小、类型、是否可引导、是否只读等等。根据这个文件的内容,可以看出该设备共有8个物理分区,包括ssd、vbmeta_a、system_a、ifs2_a、bluetooth_a、la_vbmeta_a、la_boot_a和la_userdata。其中,一些分区是只读的,而另一些分区是可写的。还有一个名为last_parti的分区,它的大小为0,用于标记分区表的末尾。