Linux下massan使用

本文介绍如何使用masscan工具进行快速的大规模端口扫描。通过示例命令展示如何指定IP范围、端口及扫描速率,并将结果以XML格式保存。

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例子:./masscan 178.120.0.0/13 -p3389,80,8080 --rate=10000 -oX 1.xml  (扫描178.120.0.0/13这个ip段的3389、80、8080端口,速率为10kpps,以xml格式保存到1.xml)
### Linux `rm` Command Usage and Examples The `rm` command in Linux is used to delete files or directories. This powerful utility requires caution as it permanently removes specified items without moving them to a trash can. To remove a file, one simply specifies the filename after the command: ```bash rm filename.txt ``` For removing multiple files at once, list each file separated by spaces: ```bash rm file1.txt file2.txt file3.log ``` Using wildcards allows for more flexible deletions based on patterns: ```bash rm *.log ``` Directories require special handling since they contain other elements like subdirectories and files. To delete an empty directory, add `-d` option: ```bash rm -d myemptydir/ ``` However, non-empty directories necessitate recursive removal through adding `-r` flag which will also erase all contents within that folder structure including nested ones[^1]: ```bash rm -r fulldirectory/ ``` Forcefully deleting objects without prompting confirmation involves appending `-f`. Combining flags such as `-rf`, ensures silent deletion of entire hierarchies even if some components are write-protected or missing: ```bash rm -rf forcefuldeletion/ ``` Caution should be exercised when employing these commands due to irreversible consequences especially with wildcard expressions or forced operations where accidental data loss may occur[^2]. --related questions-- 1. How does one recover accidentally deleted files using tools available under Linux? 2. What measures could prevent unintentional mass-deletions while working on critical systems? 3. Can you explain how permission settings affect the ability to execute certain commands over specific files/directories? 4. In what scenarios might someone need to change default permissions recursively across large sets of folders/files? 5. Are there any graphical interfaces provided by popular distributions offering safer alternatives compared to terminal-based methods involving rm?
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