drwxr-xr-x 2 root root 20480 6月 1 17:26 bin
时间: 2024-04-28 09:21:22 浏览: 135
这个输出结果显示了一个名为 "bin" 的目录,它的权限为 `drwxr-xr-x`,属于 root 用户和 root 组。下面是对这个权限字符串的解释:
- 第一个字符 `d` 表示这是一个目录。
- 接下来的三个字符 `rwx` 表示拥有者(root)具有读、写和执行权限。
- 接下来的三个字符 `r-x` 表示组(root)具有读和执行权限,但没有写权限。
- 最后的三个字符 `r-x` 表示其他用户也具有读和执行权限,但没有写权限。
因此,任何用户都可以读取和执行该目录中的文件,但只有 root 用户可以写入该目录。如果您是非 root 用户,并且需要在该目录中创建或修改文件,您需要使用 `sudo` 命令或联系管理员以获取适当的权限。
相关问题
环境变量用哪个java -> /etc/alternatives/java_sdk lrwxrwxrwx 1 root root 32 Jun 6 17:31 java-1.8.0 -> /etc/alternatives/java_sdk_1.8.0 lrwxrwxrwx 1 root root 40 Jun 6 17:31 java-1.8.0-openjdk -> /etc/alternatives/java_sdk_1.8.0_openjdk drwxr-xr-x 7 root root 4096 Jun 6 17:31 java-1.8.0-openjdk-1.8.0.372.b07-1.0.1.al8.aarch64 lrwxrwxrwx 1 root root 34 Jun 6 17:31 java-openjdk -> /etc/alternatives/java_sdk_openjdk lrwxrwxrwx 1 root root 21 Jun 6 17:30 jre -> /etc/alternatives/jre lrwxrwxrwx 1 root root 27 Jun 6 17:30 jre-1.8.0 -> /etc/alternatives/jre_1.8.0 lrwxrwxrwx 1 root root 35 Jun 6 17:30 jre-1.8.0-openjdk -> /etc/alternatives/jre_1.8.0_openjdk lrwxrwxrwx 1 root root 54 Apr 26 12:03 jre-1.8.0-openjdk-1.8.0.372.b07-1.0.1.al8.aarch64 -> java-1.8.0-openjdk-1.8.0.372.b07-1.0.1.al8.aarch64/jre lrwxrwxrwx 1 root root 29 Jun 6 17:30 jre-openjdk -> /etc/alternatives/jre_openjdk
你可以使用以下命令来设置环境变量为java-1.8.0-openjdk:
```
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk
export PATH=$JAVA_HOME/bin:$PATH
```
这将把JAVA_HOME设置为java-1.8.0-openjdk的安装路径,并将其添加到PATH环境变量中,以便您可以在终端中运行Java命令。
为什么会这样[user_mongo@nosql01 replicaset]$ cd /opt [user_mongo@nosql01 opt]$ ll total 0 drwxr-xr-x. 3 root root 25 Mar 16 17:08 servers drwxr-xr-x. 2 root root 51 Mar 16 17:10 software [user_mongo@nosql01 opt]$ tar -zxvf /opt/software/mongodb-linux-x86_64-rhel70-4.4.12.tgz -C /opt/servers/mongodb_demo/replicaset/ mongodb-linux-x86_64-rhel70-4.4.12/LICENSE-Community.txt tar: mongodb-linux-x86_64-rhel70-4.4.12: Cannot mkdir: Permission denied tar: mongodb-linux-x86_64-rhel70-4.4.12/LICENSE-Community.txt: Cannot open: No such file or directory mongodb-linux-x86_64-rhel70-4.4.12/MPL-2 tar: mongodb-linux-x86_64-rhel70-4.4.12: Cannot mkdir: Permission denied tar: mongodb-linux-x86_64-rhel70-4.4.12/MPL-2: Cannot open: No such file or directory mongodb-linux-x86_64-rhel70-4.4.12/README tar: mongodb-linux-x86_64-rhel70-4.4.12: Cannot mkdir: Permission denied tar: mongodb-linux-x86_64-rhel70-4.4.12/README: Cannot open: No such file or directory mongodb-linux-x86_64-rhel70-4.4.12/THIRD-PARTY-NOTICES tar: mongodb-linux-x86_64-rhel70-4.4.12: Cannot mkdir: Permission denied tar: mongodb-linux-x86_64-rhel70-4.4.12/THIRD-PARTY-NOTICES: Cannot open: No such file or directory mongodb-linux-x86_64-rhel70-4.4.12/bin/install_compass tar: mongodb-linux-x86_64-rhel70-4.4.12: Cannot mkdir: Permission denied tar: mongodb-linux-x86_64-rhel70-4.4.12/bin/install_compass: Cannot open: No such file or directory mongodb-linux-x86_64-rhel70-4.4.12/bin/mongo tar: mongodb-linux-x86_64-rhel70-4.4.12: Cannot mkdir: Permission denied tar: mongodb-linux-x86_64-rhel70-4.4.12/bin/mongo: Cannot open: No such file or directory mongodb-linux-x86_64-rhel70-4.4.12/bin/mongod tar: mongodb-linux-x86_64-rhel70-4.4.12: Cannot mkdir: Permission denied tar: mongodb-linux-x86_64-rhel70-4.4.12/bin/mongod: Cannot open: No such file or directory mongodb-linux-x86_64-rhel70-4.4.12/bin/mongos tar: mongodb-linux-x86_64-rhel70-4.4.12: Cannot mkdir: Permission denied tar: mongodb-linux-x86_64-rhel70-4.4.12/bin/mongos: Cannot open: No such file or directory tar: Exiting with failure status due to previous errors [user_mongo@nosql01 opt]$ tar -zcvf /opt/software/mongodb-linux-x86_64-rhel70-4.4.12.tgz -C /opt/servers/mongodb_demo/replicaset/ tar: Cowardly refusing to create an empty archive Try `tar --help' or `tar --usage' for more information.
根据你提供的信息,出现这种情况可能是因为你没有足够的权限在目标文件夹中创建文件。可以尝试以下解决方法:
1.使用sudo命令运行tar命令,以管理员权限运行。例如:sudo tar -zxvf /opt/software/mongodb-linux-x86_64-rhel70-4.4.12.tgz -C /opt/servers/mongodb_demo/replicaset/
2.检查目标文件夹/opt/servers/mongodb_demo/replicaset/的权限是否正确,可以使用ls -l命令查看。如果权限不足,可以使用chmod命令更改目标文件夹的权限。例如:sudo chmod 755 /opt/servers/mongodb_demo/replicaset/
希望以上解决方法能够帮助到你。
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