marcostolosa/cmd_cheatSheet.md

## cmd_cheatSheet.md

      
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              cmd_cheatSheet.md
            
          
    Command Line cheat-sheet

Search recursively for a string inside files and directories

grep -R 'string' dir/
egrep -ril 'string|palavra2' ./dir

Download entire website w/ wget

wget --limit-rate=200k --no-clobber --convert-links --random-wait -r -p -E -e robots=off -U mozilla http://www.asdasdsaqd.com

Custom convert any video format to GIF

ffmpeg -i video.mp4 -vf scale=400:-1 -r 3 -f image2pipe -vcodec ppm - | convert -delay 5 -loop 0 - video.gif | convert -layers Optimize - video.gif

Connect via SSH and send commands to Server (commands in bash file)

ssh user@server -p 22 'bash -s' < cmd.sh

See all strings in any file

strings FILE

Search for STRING in all strings of a file

strings FILE |gre STRING

Convert string to md5

import hashlib
hashlib.md5("meuovo".encode("utf")).hexdigest()

Convert hex to ascii

echo 0x00000000746F6F72 | xxd -rp

Convert string to hex

printf intrd | xxd

Convert hex to decimal

echo $((0x3c))

Convert decimal to char

printf "\101\n"
python hex to dec
python -c "print(int('0x00000000746F6F72', 16))"

Convert hex to ascii

python -c print '"deadbeef".decode("hex")''

Convert dec to hex

python -c "print hex(int(65537))"

Encode base64

python -c 'import base64; print(base64.b64encode("dssss"))'

Decode base64

python -c 'import base64; print(base64.b64decode("dsfdsfsdfd="))'
python -c 'import base64; print(base64.b64decode("SEFDS0FGTEFHe09ubHkgU24wd2QzbiBjYW4gZGl2aWRlIGJ5IFplcjB9Cg=="))'

Simple sed search n replace

sed -i 's/foo/bar/g' FILENAME
sed -i 's/(//g' abc_patched.txt

Print only numbers

sed "s/[^0-9]//g" ARQUIVO

Remove spaces

sed '/^\s*$/d' ARQUIVO

Convert to Lowercase

python -c "print('TEXT').lower()"

Convert to Uppercase

python -c "print('text').upper()"

Tabela simples de comparação Hexa, Decimal, Octal e Binário


Hex
Dec
Oct
Bin


0
0
0
0000


1
1
1
0001


2
2
2
0010


3
3
3
0011


4
4
4
0400


5
5
5
0101


6
6
6
0110


7
7
7
0111


8
8
10
1000


9
9
11
1001


A
10
12
1010


B
11
13
1011


C
12
14
1100


D
13
15
1101


E
14
16
1110


F
15
17
1111
Hex	Dec	Oct	Bin
0	0	0	0000
1	1	1	0001
2	2	2	0010
3	3	3	0011
4	4	4	0400
5	5	5	0101
6	6	6	0110
7	7	7	0111
8	8	10	1000
9	9	11	1001
A	10	12	1010
B	11	13	1011
C	12	14	1100
D	13	15	1101
E	14	16	1110
F	15	17	1111