Modifying binary file by editing Hex values ?

Nicol · #1 (**permalink**) 11-03-2005

Hi ,

i'm using special binary file (lotus notes) and modifying an hexadecimal address range with windows hex editor and it works fine !

The file is an AIX one and i'm forced to transfert (ftp) it before modifying it and re-transfert !

NOW i would do this directly under AIX !

I can display the file with "od -h -Ax" and i wonder how to modify the all range in red with a shell script ?

od -h file.nsf
...........................................
0000140 0000 0025 2ff1 cb40 0000 0000 3204 0000
0000150 da03 0000 ca02 0000 4601 0000 1201 0000
0000160 4201 0000 0000 0000 2e02 0000 0000 0000
0000170 0000 0000 0000 0000 0000 0000 0000 0000
0000180 0000 0000 0000 0000 3e01 0000 0000 0000
0000190 0000 0000 3a01 0000 1e01 0000 0000 0000
00001a0 1a01 0000 0000 0000 0000 0000 0601 0000
00001b0 0000 000

the purpose here , is to write "0" over all values of the range !

Something like : "cat file.nsf|.................|od -h -Ax"

thanks in advance

Christian

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