Conversion hex string into ascii in bash command line

Question

I have a lot of this kind of string and I want to find a command to convert it in ascii  I tried with echo -e and od  but it did not work   0xA7 0x9B 0x46 0x8D 0x1E 0x52 0xA7 0x9B 0x7B 0x31 0xD2

User · Answer

Make a script like this      bin bash  echo    0x 1      0x 2      0x 3      0x 4     Example   sh converthextoip sh c0 a8 00 0b  Result   192 168 0 11

User · Answer

You can use something like this     cat test file txt 54 68 69 73 20 69 73 20 74 65 78 74 20 64 61 74 61 2e 0a 4f 6e 65 20 6d 6f 72 65 20 6c 69 6e 65 20 6f 66 20 74 65 73 74 20 64 61 74 61 2e    for c in  cat test file txt   do printf   x c   done  This is text data  One more line of test data

User · Answer

The echo -e must have been failing for you because of wrong escaping  The following code works fine for me on a similar output from your program with arguments   echo -e   your program with arguments   sed -e  s 0x             x 1 g     Please note however that your original hexstring consists of non-printable characters

User · Answer

You can use xxd    cat hex txt 68 65 6c 6c 6f  cat hex txt   xxd -r -p hello

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This code will convert the text 0xA7 0x9B 0x46 0x8D 0x1E 0x52 0xA7 0x9B 0x7B 0x31 0xD2 into a stream of 11 bytes with equivalent values   These bytes will be written to standard out   TESTDATA   echo  0xA7 0x9B 0x46 0x8D 0x1E 0x52 0xA7 0x9B 0x7B 0x31 0xD2    tr          for c in  TESTDATA  do     echo  c   xxd -r done   As others have pointed out  this will not result in a printable ASCII string for the simple reason that the specified bytes are not ASCII   You need post more information about how you obtained this string for us to help you with that   How it works   xxd -r translates hexadecimal data to binary  like a reverse hexdump    xxd requires that each line start off with the index number of the first character on the line  run hexdump on something and see how each line starts off with an index number    In our case we want that number to always be zero  since each execution only has one line   As luck would have it  our data already has zeros before every character as part of the 0x notation   The lower case x is ignored by xxd  so all we have to do is pipe each 0xhh character to xxd and let it do the work   The tr translates periods to spaces so that for will split it up correctly

User · Answer

The values you provided are UTF-8 values  When set  the array of   declare -a ARR  0xA7 0x9B 0x46 0x8D 0x1E 0x52 0xA7 0x9B 0x7B 0x31 0xD2    Will be parsed to print the plaintext characters of each value   for   n 0  n  lt     ARR      n      do echo -e   u  ARR  n   0x     done   And the output will yield a few printable characters and some non-printable characters as shown here     For converting hex values to plaintext using the echo command   echo -e   x lt hex value here gt     And for converting UTF-8 values to plaintext using the echo command   echo -e   u lt UTF-8 value here gt     And then for converting octal to plaintext using the echo command   echo -e   0 lt octal value here gt     When you have encoding values you aren t familiar with  take the time to check out the ranges in the common encoding schemes to determine what encoding a value belongs to  Then conversion from there is a snap

User · Answer

This worked for me     echo 54657374696e672031203220330   xxd -r -p Testing 1 2 3    -r tells it to convert hex to ascii as opposed to its normal mode of doing the opposite  -p tells it to use a plain format

[bash] Conversion hex string into ascii in bash command line

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