knowledge/technology/applications/cli/crunch.md

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---
obj: application
source: https://www.kali.org/tools/crunch/
repo: https://salsa.debian.org/debian/crunch
---
# crunch
wordlist generator
Usage: `crunch <min-len> <max-len> [<charset string>] [options]`
## Options
| Option | Description |
| -------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `-c number` | Specifies the number of lines to write to output file, only works if -o START is used |
| `-d numbersymbol` | Limits the number of duplicate characters. `-d 2@` limits the lower case alphabet to output like aab and aac. aaa would not be generated as that is 3 consecutive letters of a. |
| `-e string` | Specifies when crunch should stop early |
| `-f /path/to/charset.lst charset-name` | Specifies a character set from the charset.lst |
| `-i` | Inverts the output so instead of aaa,aab,aac,aad, etc you get aaa,baa,caa,daa,aba,bba |
| `-o wordlist.txt` | Specifies the file to write the output to, eg: wordlist.txt |
| `-s startblock` | Specifies a starting string, eg: 03god22fs |
| `-t @,%^` | Specifies a pattern, eg: @@god@@@@ where the only the @'s, ,'s, %'s, and ^'s will change. <br>`@` will insert lower case characters<br>`,` will insert upper case characters<br>`%` will insert numbers<br>`^` will insert symbols |
| `-z gzip, bzip2, lzma, and 7z` | Compresses the output from the -o option. Valid parameters are gzip, bzip2, lzma, and [7z](compression/p7zip.md). |