Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Check for difference in output of 2 commands? Post 302489824 by methyl on Friday 21st of January 2011 06:30:52 PM
Old 01-21-2011
What Operating System are you running?
What Shell are you using?

Scrutinizer has quite correctly posted code using the unix "diff" program which is common to all unix versions.
The "diff" program is a buffered context compare program and shows the context of the difference and the address within each file of the difference. It is a very useful tool for comparing files which are similar and where the data is in no particular order. The "<" ">" signs tell you which file the difference came from.
It is very useful for comparing program code. For larger files there are usually special versions of diff supplied like "bdiff".


Let's say we just want to know the differences regardless of which file they came from and with no context and in no order relative to either file. I use this technique a lot for comparing code, but it works equally well for "ls".
Code:
ls -l > /tmp/my_temp_file
ls -le >> /tmp/my_temp_file
cat my_temp_file | sort | uniq -u

(Yes I know I have used "cat". I like left-to-right flow).

If you really need a one-line solution just replace each newline with a semi-colon.
This User Gave Thanks to methyl For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

what's the difference of these two commands?

shouldn't they give the same output? echo `echo \`date\`` is the same as the command date echo `echo date` prints the word date thanks! (3 Replies)
Discussion started by: kfad
3 Replies

2. Solaris

difference between these commands??

Hi, I would like to know what is the difference between executing the mount command in the following ways... eg: /usr/sbin/mount -F <something> AND mount -F <something> I mean , just executing the mount command as opposed to specifying the path and then executing it? ... (3 Replies)
Discussion started by: wrapster
3 Replies

3. UNIX for Dummies Questions & Answers

Difference in commands

Hello All, I have a question about the difference between two commands. I am using Korn and was told by the Unix admin that 'nohup <command> &' equals 'nohup ./<command> &. That there is no difference betwewen the two. Is this true? Also, does the command './<command> &' provide a disconnect... (4 Replies)
Discussion started by: grin1dan
4 Replies

4. Shell Programming and Scripting

Difference in auth key commands?

Good morning! What is the difference between: ssh-keygen -t rsa and ssh-keygen -b 2048 -t rsa? Thanks Bigben (2 Replies)
Discussion started by: bigben1220
2 Replies

5. Shell Programming and Scripting

Difference between the commands

HI all, Please clarify the difference between the following pm2srv:/var/opt/temip/vf/scripts/saiki#awk '{RS = ":"} ; {print $0}' testf2 hey:wasup:howru: Yes I am fine pm2srv:/var/opt/temip/vf/scripts/saiki#awk 'BEGIN { RS = ":" } ; { print $0 }' testf2 hey wasup howru Yes I... (0 Replies)
Discussion started by: saiki
0 Replies

6. Shell Programming and Scripting

Difference between 2 grep - commands

Hi, I need to know the difference between this commands: grep * *search* grep "*" *search* As far as i know does the 2nd command search for files which have a name with *search* and greps then all which have chars from a-z in the file content. But was does the first command?? Best... (1 Reply)
Discussion started by: xus
1 Replies

7. Solaris

Performance difference between commands

Looking at the performance hit on my server, does it matter wich command I run? client # rsh server tar –cf - . | tar –cv –f – or server # tar –cf – . | rsh client ‘cd target && tar –xv -f –‘ I think it doesn't really matter because both command strings involve a tar being run on... (4 Replies)
Discussion started by: petervg
4 Replies

8. AIX

HACMP: difference between 'cl' commands and 'cli' commands

Hi all, I'm new in this forum. I'm looking for the difference between the HACMP commands with the prefix "cl" and "cli". The first type are under /usr/es/sbin/cluster/sbin directory and the second are under /usr/es/sbin/cluster/cspoc directory. I know that the first are called HACMP for AIX... (0 Replies)
Discussion started by: peppix
0 Replies

9. Shell Programming and Scripting

Difference between these cron commands

Hi all I want to make sure I was understanding this correctly if a cron job command was * */20 * * * command does that mean this command will run every 20 hours? also what is the difference between the following two? 0,20,40 * * * * command 20 * * * * command I believe the first... (3 Replies)
Discussion started by: subway69
3 Replies

10. Solaris

Difference between commands

i need to know the difference between two commands ps -ef|grep oracle ps -ef|grep -v grep |grep oracle (1 Reply)
Discussion started by: smazshah
1 Replies
CUT-DIFF(1)							  Cutter's manual						       CUT-DIFF(1)

NAME
cut-diff - show difference between 2 files with color SYNOPSIS
cut-diff [option ...] file1 file2 DESCRIPTION
cut-diff is a diff command that uses diff feature in Cutter. It shows difference with color. It's recommended that you use a normal diff(1) when you want to use with patch(1) or you don't need color. OPTIONS
--version cut-diff shows its own version and exits. -c [yes|true|no|false|auto], --color=[yes|true|no|false|auto] If 'yes' or 'true' is specified, cut-diff uses colorized output by escape sequence. If 'no' or 'false' is specified, cut-diff never use colorized output. If 'auto' or the option is omitted, cut-diff uses colorized output if available. The default is auto. -u, --unified cut-diff uses unified diff format. --context-lines=LINES Shows diff context around LINES. All lines are shown by default. When unified diff format is used, 3 lines are shown by default. --label=LABEL, -L=LABEL Uses LABEL as a header label. The first--label option value is used as file1's label and the second --label option value is used asfile2's label. Labels are the same as file names by default. EXIT STATUS
The exit status is 0 for success, non-0 otherwise. TODO: 0 for non-difference, 1 for difference and non-0 for errors. EXAMPLE
In the following example, cut-diff shows difference between file1 and file2: % cut-diff file1 file2 In the following example, cut-diff shows difference between file1 and file2 with unified diff format: % cut-diff -u file1 file2 SEE ALSO
diff(1) Cutter February 2011 CUT-DIFF(1)
All times are GMT -4. The time now is 05:27 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy