misc

Windows command prompt Files merging

copy /b a.txt+b.txt+c.txt output.txt

Windows Powershell Check file checksum(SHA, MD5)

Get-FileHash .\document.pdf

https://learn.microsoft.com/ko-kr/powershell/module/microsoft.powershell.utility/get-filehash?view=powershell-7.3

CertUtil -hashfile .\document.pdf MD5

https://superuser.com/questions/245775/is-there-a-built-in-checksum-utility-on-windows-7

Linux Check file checksum(SHA, MD5)

cat ./file.apk | openssl sha256

Windows anti-forensic NTFS File System Volume cipher

cipher /w:c:

https://learn.microsoft.com/ko-kr/windows-server/administration/windows-commands/cipher

Linux Exiftool

exiftool IMG.png

Python calculate CRC32

from zlib import crc32
f = open('a.txt', mode='rb')
crc = crc32(f.read())
print(hex(crc))