Compare contents of two files

[Miguel Carabano_1]

Hi,

What is the command to compare contents of two files,
example:
I need compare two kernels.

Thanks

[Pete Randall]

cmp

as in "cmp file1 file2"


Pete

[baiju_3 · Accepted solution]

man cmp .
man diff.

Rgards ,
bl.

[Chan 007]

Hi

use

diff

if you wanted to know if they are one and same, then use

cksum - if both has similar output numbers the files are identical

Chan

[James R. Ferguson]

Hi Miquel:

While 'diff' and 'cmp' will compare and optionally report the differences of ASSCII text files, all that will be returned for binary files is whether they differ or not.

If two binary files differ, 'diff' will simply note:

"Binary files f1 and f2 differ"

The best way to valid the "sameness" of any two files is to compare their 'cksum' value:

# cksum /stand/vmunix
2335558063 10340004 /stand/vmunix

The first number is the computed cksum; teh second is the number of octets.

Regards!

...JRF...

[Paul Sperry]

diff file1 file2

[Miguel Carabano_1]

Hi,

I need compare the output of kmtune and to know as they are the differences.

Then aplly the changes...

MC

[Indrajit_1]

Hi;

Try the following command..

#cmp file1_nmae file2_name

cheers
indrajit

[James R. Ferguson]

Hi Miquel:

On each server, do:

# kmtune -l > /tmp/kmtune.$(hostnmae)

Then:

# diff -bC1 /tmp/kmtune.host1 /tmp/kmtune.host2

...to show lines in context...or simply:

# diff /tmp/kmtune.host1 /tmp/kmtune.host2

See the manpages for 'diff' for more information.

Regards!

...JRF...

[Deoncia Grayson_1]

diff /stand/system /stand/build/system to see any changes you have made, but next time just use Sam to make kernel changes that way you can see the current value and the pending value before you reboot your server

[Nguyen Anh Tien]

On HP-UX you can use:
#diff file1 file2
tienna

[Muthukumar_5]

Try as,

nm /stand/vmunix > /tmp/kernel1.symbol
nm > /tmp/kernel2.symbol
diff /tmp/kernel1.symbol /tmp/kernel2.symbol

--
Muthu

[Muthukumar_5]

Another way as,

strings /stand/vmunix > /tmp/kernel1
strings > /tmp/kernel2
diff /tmp/kernel1 /tmp/kernel2

--
Muthu

[Cem Tugrul]

Hello,
cmp and diff would be a solution for you
cmp file1 file2
diff file1 file2
Good Luck,

[Miguel Carabano_1]

Thanks.

MC