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Convert ascii string to hex

Terminal - Convert ascii string to hex
echo -n "text" | od -A n -t x1 |sed 's/ /\\x/g'
2010-07-14 15:31:36
User: camocrazed
Functions: echo od sed
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


There are 2 alternatives - vote for the best!

Terminal - Alternatives
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

Converts the ascii text to hex from bash.

Check the sample output.

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

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"}'
echo "text" | hd
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

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

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

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.

Know a better way?

If you can do better, submit your command here.

What others think

I had to forge some new hostid for Solaris stations and this command was very useful. Thanks

Comment by Sigfrodi 187 weeks and 6 days ago

Your point of view

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