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Commands tagged hex

Commands tagged hex from sorted by
Terminal - Commands tagged hex - 21 results
echo 474e552773204e6f7420556e697821 | sed -e 's/\(.\{2\}\)/\\\\x\1/g' | xargs echo -e
2012-01-14 10:26:29
User: jcubic
Functions: echo sed xargs
Tags: strings hex converter
0
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Convert Hex to String
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python -c 'print "hello".encode("hex")'
2011-12-13 23:05:17
User: atoponce
Functions: python
Tags: hex ascii python convert
1
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convert ascii string to hex

You can use "decode()" in a similar manner:

python -c 'print "68656c6c6f".decode("hex")'
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python -c 'print hex(1337)'
2011-12-13 22:03:10
User: atoponce
Functions: python
Tags: hex python numbers
0
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convert from decimal to hexadecimal

Python is always such much more readable than most shell scripting.

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hex() { printf "%X\n" $1; }
2011-12-13 04:45:21
User: 4Aiur
Functions: printf
Tags: bash hex numbers dc
7
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convert from decimal to hexadecimal
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hex() { echo $1 16op | dc; }
2011-12-12 17:12:31
User: mwgamera
Functions: echo
Tags: bash hex numbers dc
-3
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convert from decimal to hexadecimal
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hex() { bc <<< "obase=16; $1"; }
2011-12-09 13:57:05
User: bjomape
Functions: bc
Tags: bash hex bc numbers
4
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convert from decimal to hexadecimal

Use the standard calculator bc to convert decimals to hex

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echo $((0x1fe)) $((033))
2011-12-06 02:00:42
User: Mozai
Functions: echo
Tags: bash hex numbers
16
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convert from hexidecimal or octal to decimal

Bash can accept '0x' and '0' notation for hexidecimal and octal numbers, so you just have to output the values.

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myhex=$(printf '%02X' ${myip//./ };)
2011-11-30 15:12:28
User: robinsonaarond
Functions: printf
Tags: IP hex printf octet
2
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Convert IP octets to HEX with no dots.

Converts IP octets to hex using printf command. Useful for generating pxeboot aliases in the pxelinux.cfg folder.

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xxd -p <<< <STRING>
2011-07-24 19:16:32
User: h3xx
Tags: hex ascii convert
1
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convert ascii string to hex

Even adds a newline.

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echo "text" | hd
2010-07-20 15:40:52
User: Vilemirth
Functions: echo
Tags: perl hex ascii
1
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Convert ascii string to hex
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echo -n "text" | od -A n -t x1 |sed 's/ /\\x/g'
2010-07-14 15:31:36
User: camocrazed
Functions: echo od sed
Tags: sed hex ascii od
4
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Convert ascii string to hex

If you're going to use od, here's how to suppress the labels at the beginning. Also, it doesn't output the \x, hence the sed command at the end. Remove it for space separated hex values instead

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echo "text" | od -t x1
2010-07-14 14:53:25
User: max_allan
Functions: echo od
Tags: perl hex ascii
0
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Convert ascii string to hex

Just use "od" and it can also dump in decimal or octal.

(use -t x1 and not just -x or it confuses the byte order)

There is a load of other formatting options, I'm not sure if you can turn off the address at the start of the line.

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echo -n 'text' | perl -pe 's/(.)/sprintf("\\x%x", ord($1))/eg'
2010-07-14 12:20:42
User: putnamhill
Functions: echo perl
Tags: perl hex ascii
1
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Convert ascii string to hex

Here's a version that uses perl. If you'd like a trailing newline:

perl -pe 's/(.)/sprintf("\\x%x", ord($1))/eg; END {print "\n"}'
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echo -n 'text' | xxd -ps | sed 's/[[:xdigit:]]\{2\}/\\x&/g'
2010-07-13 21:46:30
User: camocrazed
Functions: echo sed
Tags: sed hex ascii
0
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Convert ascii string to hex

Same as another one I saw, just with a cleaner sed command

Edit: updated the sed command to use the [[:xdigit:]] character class - more portable between locales

Note that it will have a newline inserted after every 32 characters of input, due to the output of xxd

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echo -n 'text' | xxd -ps | sed -e ':a' -e 's/\([0-9]\{2\}\|^\)\([0-9]\{2\}\)/\1\\x\2/;ta'
2010-06-09 12:20:02
User: sata
Functions: echo sed
Tags: hex ascii
1
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Convert ascii string to hex

Converts the ascii text to hex from bash.

Check the sample output.

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echo $ascii | perl -ne 'printf "%x", ord for split //'
2010-04-19 11:57:08
User: linuxrawkstar
Functions: echo perl split
Tags: hex ascii convert
4
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convert ascii string to hex

just a bit simpler

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echo $ascii | perl -ne 'printf ("%x", ord($1)) while(/(.)/g); print "\n";'
2010-04-17 16:26:29
User: dfaulkner
Functions: echo perl
Tags: hex ascii convert
1
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convert ascii string to hex
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echo $hex | perl -pe 's/(..)/chr(hex($1))/ge'
2010-04-17 16:24:48
User: dfaulkner
Functions: echo perl
Tags: perl strings hex ascii convert
0
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convert a string of hex characters into ascii chars
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echo 'obase=16; C+F' | bc
2010-04-14 20:35:31
User: rkulla
Functions: echo
Tags: hex bc math asm
3
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Hex math with bc

To do hex to binary: echo 'ibase=16; obase=2; 16*16' | bc # prints: 111100100

To do 16*16 from decimal to hex: echo 'ibase=10; obase=16; 16*16' | bc # prints: 100

You get the idea... Alternatively, run bc in interactive mode (see man page)

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cat testfile | hexdump -C
2009-09-07 11:08:43
User: zed_0xff
Functions: cat hexdump
Tags: hex hexdump dump
0
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Hexadecimal dump of a file, pipe, or anything
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echo -n $HEXBYTES | xxd -r -p | dd of=$FILE seek=$((0x$OFFSET)) bs=1 conv=notrunc
2009-03-11 17:02:24
User: zombiedeity
Functions: dd echo
Tags: bash dd binary hex edit xxd
2
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Binary injection

Replace (as opposed to insert) hex opcodes, data, breakpoints, etc. without opening a hex editor.

HEXBYTES contains the hex you want to inject in ascii form (e.g. 31c0)

OFFSET is the hex offset (e.g. 49cf) into the binary FILE

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