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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
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Commands using hexdump from sorted by
Terminal - Commands using hexdump - 20 results
hexdump -n6 -e '/1 ":%02X"' /dev/random|sed s/^://g
2015-01-19 03:09:43
User: rubo77
Functions: hexdump sed

Generate a random MAC address with capital letters

echo -n text | hexdump -C
2014-02-21 09:15:15
User: Tomofumi
Functions: echo hexdump
Tags: sed hex ascii

hexdump could be used for conversion too!

hexdump -C file
cat /dev/ttyS2 | hexdump -C
hexdump -v -e '"%u"' </dev/urandom|fold -60|head -n 30|sed 's/\(.\{2\}\)/\1 /g'
2013-02-16 12:56:24
User: knoppix5
Functions: fold head hexdump sed


od /dev/urandom -w60 -An|sed 's/ ..../ /g'|head -n 30

(this one lacks digits 8 and 9)

hexdump -C -n 20 filename
export GREP_COLOR='1;32';while [ true ]; do head -n 100 /dev/urandom; sleep .1; done | hexdump -C | grep --color=auto "ca fe"
hexdump -c <file>
dd if=/dev/sda bs=1 count=4 skip=$((0x1b8)) 2>/dev/null | hexdump -n4 -e '"0x%x\n"'
2011-07-30 02:42:32
User: d3Xt3r
Functions: dd hexdump

Useful when you want to know the mbrid of a device - for the purpose of making it bootable. Certain hybridiso distros, for eg the OpenSUSE live ISO uses the mbrid to find the live media. Use this command to find out the mbrid of your USB drive and then edit the /grub/mbrid file to match it.

hexdump -v -e '"\\""x" 1/1 "%02x" ""' <bin_file>
cat /dev/urandom | hexdump -C | highlight ca fe 3d 42 e1 b3 ae f8 | perl -MTime::HiRes -pne "Time::HiRes::usleep(rand()*1000000)"
2010-12-29 21:26:18
User: doherty
Functions: cat hexdump perl

Nobody wants the boss to notice when you're slacking off. This will fill your shell with random data, parts of it highlighted. Note that 'highlight' is the Perl module App::highlight, not "a universal sourcecode to formatted text converter." You'll also need Term::ANSIColor.

hexdump -e '8/1 "%02X ""\t"" "' -e '8/1 "%c""\n"' /dev/sda1 | less /mystring
while [ true ]; do head -n 100 /dev/urandom; sleep .1; done | hexdump -C | grep "ca fe"
export GREP_COLOR='1;32'; cat /dev/urandom | hexdump -C | grep --color=auto "ca fe"
cat /dev/urandom | hexdump -C | grep "ca fe"
2010-09-27 08:20:44
Functions: cat grep hexdump

just make some data scrolling off the terminal. wow.

curl -s http://google.com | hexdump -C|less
2010-02-02 18:54:49
User: chilicuil
Functions: hexdump

Useful to browse dangerous web sites.

ifs () { echo -n "${IFS}"|hexdump -e '"" 10/1 "'\''%_c'\''\t" "\n"' -e '"" 10/1 "0x%02x\t" "\n\n"'|sed "s/''\|\t0x[^0-9]//g; $,/^$/d"
2009-10-10 22:41:35
User: dennisw
Functions: echo hexdump sed

You can display, save and restore the value of $IFS using conventional Bash commands, but these functions, which you can add to your ~/.bashrc file make it really easy.

To display $IFS use the function ifs shown above. In the sample output, you can see that it displays the characters and their hexadecimal equivalent.

This function saves it in a variable called $saveIFS:

sifs () { saveIFS=$IFS; }

Use this function to restore it

rifs () { IFS=$saveIFS; }

Add this line in your ~/.bashrc file to save a readonly copy of $IFS:

declare -r roIFS=$IFS

Use this function to restore that one to $IFS

rrifs () { IFS=$roIFS; }
cat testfile | hexdump -C
while true; do beep -l66 -f`head -c2 /dev/input/mice|hexdump -d|awk 'NR==1{print $2%10000}'`; done
2009-07-11 12:01:27
User: 5z474n
Functions: awk hexdump

Beeps on mouse's every move. Bear in mind that, at least on Ubuntu, /dev/input/mice can be read only by root.

hexdump -e '90/1 "%_p" "\n"' /dev/mem | less
2009-05-12 16:20:57
User: copremesis
Functions: hexdump

see what's in your memory right now... sometimes you find passwords, account numbers and url's that were recently used. Anyone have a safe command to clear the memory without rebooting?