Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

cmp(1) [ultrix man page]

cmp(1)							      General Commands Manual							    cmp(1)

Name
       cmp - compare two files

Syntax
       cmp [-l | -s] file1 file2  [ skip1 ]  [ skip2 ]

Description
       The  command  compares two files.  If either file1 or file2 is `-', standard input is used for the file.  With no options, makes no comment
       if the files are the same.  If they differ, it reports the byte and line number at which the difference occurred to  standard  output.	If
       one file is an initial subsequence of the other a message including the file name is written to standard error.

       The optional skip1 and skip2 parameters are initial byte offsets into file1 and file2 respectively and may be either octal, by specifying a
       leading 0, or decimal.  When using skip1 and skip2 the offset is treated as the start of the respective input file.  Only one option may be
       specified  at  a  time.	Only one of the input files may be standard input at a time.  Because the line number is not calculated when using
       either of the options the use of either flag will increase the speed of

Options
       -l Long format:	prints the byte number (decimal) and the differing bytes (octal) for each difference.

       -s Suppresses normal output and sets the exit code only.

Diagnostics
       Exit code 0 is returned for identical files, 1 for different files, and 2 for an inaccessible or missing argument.

See Also
       comm(1), diff(1)

																	    cmp(1)

Check Out this Related Man Page

cmp(1)							      General Commands Manual							    cmp(1)

NAME
cmp - compare two files SYNOPSIS
file1 file2 [skip1 [skip2]] DESCRIPTION
compares two files (if file1 or file2 is the standard input is used). Under default options, makes no comment if the files are the same; if they differ, it announces the byte and line number at which the difference occurred. If one file is an initial subsequence of the other, that fact is noted. skip1 and skip2 are initial byte offsets into file1 and file2, respectively; and maybe octal or decimal; the form of the number is determined by the environment variable (in the C locale, a leading 0 denotes an octal number. See on environ(5) and strtol(3C)). recognizes the following options: Print the byte number (decimal) and the differing bytes (octal) for each difference (byte numbering begins at 1 rather than 0). Print nothing for differing files; return codes only. EXTERNAL INFLUENCES
Environment Variables determines the language in which messages are displayed. If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are set to "C". See environ(5). International Code Set Support Single- and multi-byte character code sets are supported. DIAGNOSTICS
returns the following exit values: Files are identical. Files are not identical. Inaccessible or missing argument. prints the following warning if the comparison succeeds till the end of file of file1(file2) is reached. SEE ALSO comm(1), diff(1). STANDARDS CONFORMANCE
cmp(1)

15 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Compare 2 sorted files

Hi all, please give me the commands using which i can compare 2 sorted files and get the difference in third file, indiating where the difference is from either file1 or file2. as: File1 (Original file) GARRY JOHN JULIE SAM --------------- File2 DEV GARRY JOHN JOHNIEE (7 Replies)
Discussion started by: varungupta
7 Replies

2. UNIX for Dummies Questions & Answers

Difference between two huge files

Hi, As per my requirement, I need to take difference between two big files(around 6.5 GB) and get the difference to a output file without any line numbers or '<' or '>' in front of each new line. As DIFF command wont work for big files, i tried to use BDIFF instead. I am getting incorrect... (13 Replies)
Discussion started by: pyaranoid
13 Replies

3. Shell Programming and Scripting

Compare two files

I need to compare two files: Basically I have an input file fileA. which need to be compare with fileB located in /etc/lc/mbd directroy Both file format is like: abc01def:10.80.11.123 The input file format is: abc01mns:10.80.11.1 dbc02mns:10.80.11.2 fbc01mns:10.80.11.3... (8 Replies)
Discussion started by: amir07
8 Replies

4. Shell Programming and Scripting

File Comparison command but ignoring while spaces

Hello All, I am writing a file comparison utility and using the cmp command to compare 2file. But I need command that will compare 2 files and if the files are identical expect for differences in white spaces, then it should ignore those spaces and consider the two files equal. Is there a way to... (7 Replies)
Discussion started by: Veenak15
7 Replies

5. Linux

Need Help: MD5

I am trying to compare two identical files by using md5 command, but cant get the right command parameters Please help me with any examples. All I want is to know how to compare two identical files which are residing on two different machines in my local network, for example: Host_A -... (6 Replies)
Discussion started by: greenja
6 Replies

6. Shell Programming and Scripting

awk read input files

hi, i'm a beginner in writing awk scripts and I have a problem with reading input files. Requirement for my programm: compare file1 to file2 and check if value in column1 is equal and value in column5 is different. File 1: 180 P 01.01.2008 30.06.2008 2 180 P 01.07.2008 ... (10 Replies)
Discussion started by: tgooper
10 Replies

7. Shell Programming and Scripting

Find out the match data content?!

Hi, Long list of Input file1 content: 1285_t 4860_i 4817_v 8288_c 9626_a . . . Long list of Input file2 content: 1285_t chris germany 8288_c steve england 9626_a dave swiss 9260_s stephanie denmark . . . (14 Replies)
Discussion started by: patrick87
14 Replies

8. Shell Programming and Scripting

finding missing items in file

I have a need to compare 2 files, then print results to file. Need to find items from file2 that are not found in file 1. thanks in advance! example: file 1: abcde=12 fffff=6 bbbb=35 file2: abcde=12 fffff=6 bbbb=35 ccccc=10 kkkkk=45 (8 Replies)
Discussion started by: discostu
8 Replies

9. Solaris

Need help to find difference between two files

I need to find the difference between two files in UNIX. I tried diff, but couldn't get it right. There are two files: file1: apple mango strawberry banana grape file2: grape apple banana I need an output file like below: ... (11 Replies)
Discussion started by: kisaad
11 Replies

10. UNIX for Dummies Questions & Answers

Find difference between two files

I have two files as below File1: a b c d File2: a b When i find the difference the output would be c&d.. How can i get my requirement...pls help... Many thanks in advance (10 Replies)
Discussion started by: jagadish_gaddam
10 Replies

11. Shell Programming and Scripting

File Comparison Columnar?

I'm looking to build up a process which would compare 2 files and show difference, the difference needs to be done in such a way that it also shows which column value is differing. So i think of this. Run a diff between the files , then someway find which columns have different values need to... (6 Replies)
Discussion started by: dinjo_jo
6 Replies

12. Shell Programming and Scripting

Comparing text in 2 files and output difference in another file.

I have 2 files of almost same text apart from 2,3 ending lines. Now I want to get that difference in another file. e.g file1.txt is Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_livecd-lv_root 18G 2.4G 15G 14% / tmpfs 504M ... (12 Replies)
Discussion started by: kashif.live
12 Replies

13. Shell Programming and Scripting

Script to compare 2 files and prints difference as output sidebyside

Hi All, Am trying script to compare 2 files and print the difference found from old file to new file on line by line basis on side by side display. Basically line by line comparision and files may contain blank line as well I know we have compare/diff commands but i don't how to make... (10 Replies)
Discussion started by: Optimus81
10 Replies

14. Shell Programming and Scripting

Finding first difference between two files

Hi! I'd like to know if it is possible for a command to find the first difference between two large files, output that line from both file and stop, so no need to continue after that to save some computation time. I don't think looping through it will be efficient enough but that's the only... (6 Replies)
Discussion started by: Mojing
6 Replies

15. Shell Programming and Scripting

Compare two variables and print the difference

Hi PRIM_SEQ=`some sql code` and output of PRIM_SEQ is like below 120 130 STB_SEQ=`some sql code` and output of STB_SEQ is like below 115 110 i need to compare this two variables output ( decimal numbers) 1) What I want to do is to compare every number in the PRIM_SEQ with... (8 Replies)
Discussion started by: amar1208
8 Replies

Featured Tech Videos