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89

On Linux and Windows you can use diffpdf (which differs from diff-pdf mentioned in this thread). On Ubuntu install using: sudo apt-get install diffpdf See further this UbuntuGeek page on comparing pds textually or visually.


50

Try WinMerge with the xdocdiff plugin. Both are completely free. No strings attached. A couple of the comments below suggest they don't see any difference. That means the plug-in isn't installed correctly. Here's how: Put the files where the xdocdiff plugin's readme file says to put them (there are two places; I won't list them here as filenames can ...


41

use the built in 'exact' function which is exact-ly for this purpose. =exact(A1, B1) will return true if the strings are identical.


34

I work in video quality research, and the thing you're looking for is somewhat everywhere but nowhere to be found. There are plenty of research groups or companies who write their own video quality software, but most of them are either not available or not flexible enough. What you want is a program that gives you a Mean Opinion Score (MOS) of a video, i.e. ...


22

If case in your third column result is not important, =A1=B1. If case in your result does matter, =IF(A1=B1,"true","false").


19

The following (if you substitute the first directory for directory1 and the second for directory2) should do what you're looking for and swiftly: find directory1 -type d -printf "%P\n" | sort > file1 find directory2 -type d -printf "%P\n" | sort | diff - file1 The fundamental principle is that it prints out all of the directories including subdirectory ...


19

vimdiff <(cd dir1; find . | sort) <(cd dir2; find . | sort) will give you a nice side-by-side display of the two directory hierarchies with any common sections folded.


19

To build on @Some Linux Nerd's answer: Many CPU's, Intel among them, have a "flags" register (called FLAGS in x86). This register has bits that are set or cleared at the conclusion of many, if not all, integer mathematical instructions. The CMP instruction is such a mathematical instruction, except it doesn't store its result, but still affects the flags. ...


18

I believe what you need is: svn diff -rBASE:HEAD


18

I recently found this and I love it. https://github.com/vslavik/diff-pdf Cross platform, free, and works well. Here is a screenshot of diff-pdf in action - note that the text is not different in the PDF, but only fonts (and correspondingly, layout settings): The call to obtain that image was: diff-pdf --view testA.pdf testB.pdf   ... where ...


18

There are complete Wiki articles on it, a bit too much to paste here: Features removed from Windows Vista Features removed in Windows 7


17

For a small home-server with low-traffic, I'd just buy a regular old PC, or recycle an old laptop. I've got a 5 year old laptop that sits humming on the shelf serving out media and more. Works well, costs next-to-nothing.


15

http://en.wikipedia.org/wiki/Windows_7_editions Looks like it is just a difference in licensing between Enterprise and Ultimate. Interesting to note that Vista Ultimate and Enterprise did have some actual differences in functionality (namely, no Windows Media Center or Ultimate Extras in the Enterprise edition): ...


15

If you read the Intel documentation, the CMP instruction is really just subtracting one from the other. If the numbers are different, then the result is non-zero (that is, false). If the numbers are the same, the result is zero (that is, true).


14

If you're used to Ubuntu, then use Ubuntu. Also, any distribution that's modern and up-to-date are pretty standard in what they offer. The big thing that sets them apart however, are the package managers. Red Hat based distros use RPM packages and Yum-based repositories, and Debian/Ubuntu based distros use deb packages and apt. Personally, I prefer Debian ...


14

The XP mode is precisely what you said it was - for people who use old applications (or games, as it may be) that for some reason or other cannot be replaced or upgraded. Imagine an old accounting system which might still work, but have a rather costy upgrade that can't be justified to get past bookkeeping. Or where the developing company has died off, and ...


13

We also needed to compare PDFs at our company and were not satisfied with any of the solutions we found, so we made our own and just released version 2.0 today (9/5): i-net PDFC. It's not free, but we do offer a 30-day trial. It's written in Java, so it's cross-platform. What makes it special is that it compares the content as opposed to only the text ...


13

The operators for comparing time stamps are: [ $file1 -nt $file2 ] [ $file1 -ot $file2 ] The mnemonic is easy: 'newer than' and 'older than'.


13

I usually use rsync for this task: rsync -nav --delete DIR1/ DIR2 BE VERY CAREFUL to always use the -n, aka --dry-run, option, or it will synchronize (change the contents of) the directories. This will compare files based on file modification times and sizes... I think that's what you really want, or at least you don't mind if it does that? I got the ...


12

Nothing. A single-pass wipe is effectively secure. (Don't believe it? Contact a reputable data-recovery firm and price a recovery from a true single-pass surface wipe. If you have data that someone -- anyone! -- would realistically be willing to pay the quoted price to recover, consider something more rigorous, like maybe a three-pass wipe.)


10

You can also use Adobe Acrobat X. Its has built in PDF comparison functionality under "View -> Compare Documents.


10

Window management The third (green) window button is used to zoom windows. Sometimes that means maximizing it to fill the screen as you might expect. More often, it will resize the window to fit its contents, or restores it to a predefined default size. Double-clicking the title bar minimizes the window instead of maximizing it. Scrolling while holding ⌃ ...


9

You can use PipeViewer for this pv firstfile | cmp -l secondfile > output


9

Well, I mean, the computer itself doesn't store any values in hexadecimal, it stores them as binary. However, we do choose to represent them as hexadecimal digits, for one main reason -- it's the easiest, most concise way to represent bytewise data: 0110 1011 becomes 6B in hex Octal would require grouping of digits into 3, which would not allow for ...


9

Wikipedia has a good comparison table of Linux distributions. Also, DistroWatch has an overview of the top ten distributions.


9

You're wanting to find the differences in files in two folders and merge the changes? If you're looking for a GUI utility you can use FileMerge which can be found at /Developer/Applications/Utilities/ if you have Apple's Developer Tools installed. It has some odd bugs - mostly to deal with handling file encoding. If you're looking for something faster and ...


8

Take a look at this link: Which one is right for you?


8

The > character doesn't work for the type of comparison you want. You have to use -gt: if [[ 167 -gt 10800 ]] then echo "I can't compare" fi And if you want to do a less-than comparison, you need to do -lt. To see what other options you need to do for comparison, look at the test manpage.


8

Red Hat Enterprise Linux (RHEL) is an enterprise-class Linux distro whose goal is long-term API/ABI stability. Fedora Linux (Fedora) is a developer-class Linux distro whose goal is to test and showcase new technologies. Every few years a new version of RHEL comes out, containing stabilized forms of the technologies previously used in Fedora.


8

If you are wanting to try Red Hat Enterprise Linux (RHEL) check out CentOS. It's exactly the same as RHEL but with copyrighted RedHat logos removed. Basically it boils down to: RHEL = CentOS = Oracle Unbreakable Linux - Server OS, with stable packages and 'certified' to run certain proprietary enterprise software. Has ancient version of most packages (by ...



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