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Merge pull request #681 from the-pythonist/the-pythonist-patch-1

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Command Injection/README.md
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@ -113,9 +113,10 @@ command1 | command2 # Pipe the output of command1 into command2
### Bypass without space
* `$IFS` is a special shell variable called the Internal Field Separator. By default, in many shells, it contains whitespace characters (space, tab, newline). When used in a command, the shell will interpret `$IFS` as a space.
* `$IFS` is a special shell variable called the Internal Field Separator. By default, in many shells, it contains whitespace characters (space, tab, newline). When used in a command, the shell will interpret `$IFS` as a space. `$IFS` does not directly work as a seperator in commands like `ls`, `wget`; use `${IFS}` instead.
```powershell
cat$IFS/etc/passwd
cat${IFS}/etc/passwd
ls${IFS}-la
```
* In some shells, brace expansion generates arbitrary strings. When executed, the shell will treat the items inside the braces as separate commands or arguments.
```powershell