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Commands using diff

Commands using diff from sorted by
Terminal - Commands using diff - 74 results
while true; do iptables -nvL > /tmp/now; diff -U0 /tmp/prev /tmp/now > /tmp/diff; clear; cat /tmp/diff; mv /tmp/now /tmp/prev; slee p 1; done
2012-04-15 00:02:33
User: unixmonkey34223
Functions: cat diff iptables mv
Tags: grep iptables watch diffe
0
Up
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watch iptables counters

this alternative shows the differences as they occur so that they are made plain

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diff -Naur /source/path /target/path --brief | awk '{print "cp " $2 " " $4}' | sh
2012-04-13 12:07:20
User: johanadriaans
Functions: awk diff
0
Up
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Copy all file differences to an existing mirror location

I use this a lot to sync changes between folders that don't share a SVN or GIT repository. If you want to preview the command before executing, just leave out the last part ("| sh")

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cvs -q diff --brief | grep file | cut -d/ -f3- | cut -d',' -f1
2012-03-07 12:08:21
User: chstr
Functions: cut cvs diff file grep
0
Up
Down
List only locally modified files with CVS
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git diff --color-words file1 file2
2012-03-02 01:50:01
User: kev
Functions: diff
Tags: diff
1
Up
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diff color words
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diff -dbByw $COLUMNS FILE1 FILE2
2012-02-28 03:19:20
User: DewiMorgan
Functions: diff
Tags: diff compare
0
Up
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Display diffed files sidebyside, with minimal differences, using the full width of the terminal.

The normal output of 'diff' is a wonderful thing. But just sometimes, you want something that is a little more... well... readable.

This is that command.

-d - (optional) find the minimal set of changes

-b - (optional) ignore changes in the amount of whitespace

-B - (optional) ignore changes that just insert or delete blank lines

-y - this is where the magic happens! Use the side-by-side output format.

-w $COLUMNS - more magic! Instead of using 80 columns, use the current width of the terminal.

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for i in $(ps -eo pid,pmem,pcpu| sort -k 3 -r|grep -v PID|head -10|awk '{print $1}');do diff -yw <(pidstat -p $i|grep -v Linux) <(ps -o euser,pri,psr,pmem,stat -p $i|tail);done
2012-02-16 20:54:32
User: bob_the_builder
Functions: awk diff grep head ps sort
0
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Displays user-defined ps output and pidstat output about the top CPU or MEMory users.

It grabs the PID's top resource users with $(ps -eo pid,pmem,pcpu| sort -k 3 -r|grep -v PID|head -10)

The sort -k is sorting by the third field which would be CPU. Change this to 2 and it will sort accordingly.

The rest of the command is just using diff to display the output of 2 commands side-by-side (-y flag) I chose some good ones for ps.

pidstat comes with the sysstat package(sar, mpstat, iostat, pidstat) so if you don't have it, you should.

I might should take off the timestamp... :|

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diff --suppress-common-lines -y <(cd path_to_dir1; find .|sort) <(cd path_to_dir2; find .|sort)
2012-02-13 12:49:33
User: knoppix5
Functions: cd diff find
Tags: diff find directories recursive
1
Up
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Compare two directories

Output of this command is the difference of recursive file lists in two directories (very quick!).

To view differences in content of files too, use the command submitted by mariusbutuc (very slow!):

diff -rq path_to_dir1 path_to_dir2
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svn diff --diff-cmd='meld' -r 100:BASE FILE
2012-02-03 18:00:07
User: 0disse0
Functions: diff
Tags: subversion
0
Up
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Send SVN diff to Meld
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diff -y <(ssh user@host find /boot|sort) <(find /boot|sort)
2012-01-31 15:04:30
User: knoppix5
Functions: diff find ssh
2
Up
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Compare a remote dir with a local dir

You can compare directories on two different remote hosts as well:

diff -y <(ssh user1@host1 find /boot|sort) <(ssh user2@host2 find /boot|sort)

To avoid password-prompt on remote host just generate the rsa key locally and copy it to remote host:

ssh-keygen -t rsa

then

ssh you@server1 "mkdir .ssh"

then

scp .ssh/id_rsa.pub you@server1:; .ssh/authorized_keys2
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diff <(exiftool img_1.jpg) <(exiftool img_2.jpg)
2012-01-30 22:01:17
User: fpunktk
Functions: diff
7
Up
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diff the outputs of two programs

I've been looking for this for a long time. Does anybody know how to do this in dash (POSIX shell)?

An alternative version might be:

exiftool img_1.jpg | diff - <(exiftool img_2.jpg)
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svn diff <FILE>
2012-01-30 16:47:48
User: bbbco
Functions: diff
Tags: svn diff
0
Up
Down
Compare latest changes in locally edited file with SVN copy of a file

If you have ever edited a locally checked out version of a file to tweak it for testing purposes, and came back to it over a weekend, you might have forgotten what you exactly changed. This command helps you see the differences between the the checked in SVN version, and the one you tweaked.

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diff -U99999 original.css modified.css | awk '/^-/{next} {f=f"\n"$0} /^\+.*[^ ]/{yes=1} /}/ {if(yes){print f} f="";yes=0}'
2012-01-12 07:57:22
User: unhammer
Functions: awk diff
Tags: diff awk css wordpress
0
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diff two css files to create an overriding css (e.g. for wordpress child themes)

This will extract the differing CSS entries of two files. I've left the initial character (plus or space) in output to show the real differing line, remove the initial character to get a working CSS file. The output CSS file is usable by either adding it in a below the to original.css, or by only using the output but adding @import url("original.css"); in the beginning.

This is very useful for converting Wordpress theme copies into real Wordpress child themes.

Could exclude common lines within entries too, I guess, but that might not be worth the complexity.

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for f in $(ls -A ./dir); do echo -n $f && diff original.txt ./dir/$f | wc -l ; done | perl -ne 'my $h={}; while (<>) { chomp; if (/^(\S+?)\s*(\d+?)$/){$h->{$1}=$2;} }; for my $k (sort { $h->{$a} $h->{$b} } keys %$h ){ print "$k\t$h->{$k}\n"}'
2011-11-15 06:02:12
User: 1vq9
Functions: diff echo ls perl sort wc
0
Up
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display list of files in a directory sorted by amount of lines different with original.txt.
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diff -ru originDir updateDir > result.patch
2011-10-23 11:41:05
User: rjgoldsborough
Functions: diff
0
Up
Down
Create patch file for two directories

Removes an extra character and space.

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diff -r -u originDir updateDir > result.patch
2011-10-23 10:36:55
User: anhpht
Functions: diff
3
Up
Down
Create patch file for two directories
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diffxml() { diff -wb <(xmllint --format "$1") <(xmllint --format "$2"); }
2011-10-06 07:36:13
User: sharfah
Functions: diff
Tags: diff xml xmllint
13
Up
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Diff XML files

Diffs two xml files by formatting them first using xmllint and then invoking diff.

Usage: diffxml XMLFile1 XMLFile2

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diff -U 9999 file_a file_b | tail -n +3 | grep -P "^(\ Header|\-|\+)"
2011-09-21 21:33:40
User: nnutter
Functions: diff grep tail
Tags: diff
0
Up
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Diff with Sections/Headers

Maybe very limited in its applicability but could be of use at times.

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LC_ALL=C diff -q dir1 dir2 | grep differ | awk '{ print $2, $4 }' | xargs -n 2 gvim --nofork -d
2011-09-06 11:50:33
User: brock
Functions: awk diff grep xargs
0
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Edit all different files from 2 directories with gvim in difference mode (gvim -d)

LC_ALL=C is here to always grep on "differ" whatever your language env.

xargs -n 2 to run gvim -d with 2 arguments

gvim --nofork to use only one instance of gvim

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diff -rq dirA dirB
2011-08-24 21:33:24
User: mariusbutuc
Functions: diff
Tags: diff compare recursive
9
Up
Down
Compare directories via diff

http://hints.macworld.com/article.php?story=20070408062023352

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diff rpm_output_from_other_computer <(rpm -qa|sort)
2011-06-25 11:45:15
User: xeor
Functions: diff rpm
Tags: diff file descriptor
0
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Using commandoutput as a file descriptor

Description is moved to "Sample output" because the html sanitizer for commandlinefu breaks the examples..

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diff --changed-group-format='differs from line %dF to line %dL|' --unchanged-line-format='' $FILE1 $FILE2 | sed 's/|/\n/'
2011-06-02 15:04:36
User: dullgiulio
Functions: diff sed
-1
Up
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Describe differences between files

Using sed to print newlines as doing it in one line with diff is non-trivial.

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Diff files over SSH: ssh [login]@[host] "cat [remote file]" | diff - "[local file]"
2011-04-28 16:59:56
User: dennisfaust
Functions: diff ssh
3
Up
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Diff files over SSH

Sometimes you need to compare two config files on different servers. Put the file names into the above script and let 'er rip.

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svn diff -r 1792:HEAD --summarize | awk '{if ($1 != "D") print $2}'| xargs -I {} tar rf incremental_release.tar {}
2011-04-05 15:00:49
User: windfold
Functions: awk diff tar xargs
Tags: bash svn awk xargs tar
0
Up
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Create a tar of modified/added files since revision 1792.

The result of this command is a tar with all files that have been modified/added since revision 1792 until HEAD. This command is super useful for incremental releases.

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svn diff -r M:N file.php | patch -p0
2011-03-29 04:15:02
User: ruslan
Functions: diff patch
Tags: svn diff revert patch
1
Up
Down
Revert an SVN file to previous revision

M - current revision, N - older revision

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diff -Naur --strip-trailing-cr
2011-02-10 14:32:42
User: ruslan
Functions: diff
Tags: diff alias patch crlf
1
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Probably, most frequent use of diff

This form is used in patches, svn, git etc. And I've created an alias for it:

alias diff='diff -Naur --strip-trailing-cr'

The latter option is especially useful, when somebody in team works in Windows; could be also used in commands like

svn diff --diff-cmd 'diff --strip-trailing-cr'...
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