16.1. | FreeBSD uses far more swap space than Linux®. Why? | ||||||
FreeBSD only appears to use more swap than Linux®. In actual fact, it does not. The main difference between FreeBSD and Linux® in this regard is that FreeBSD will proactively move entirely idle, unused pages of main memory into swap in order to make more main memory available for active use. Linux® tends to only move pages to swap as a last resort. The perceived heavier use of swap is balanced by the more efficient use of main memory. Note that while FreeBSD is proactive in this regard, it does not arbitrarily decide to swap pages when the system is truly idle. Thus you will not find your system all paged out when you get up in the morning after leaving it idle overnight. | |||||||
16.2. | Why does | ||||||
The simple answer is that free memory is wasted
memory. Any memory that your programs do not actively
allocate is used within the FreeBSD kernel as disk
cache. The values shown by top(1) labeled as
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16.3. | Why will | ||||||
Symlinks do not have permissions, and by default,
chmod(1) will not follow symlinks to change the
permissions on the target file. So if you have a file,
However, the permissions on You have to use either Προειδοποίηση:The
With the trailing slash, chmod(1) will follow
the symlink, | |||||||
16.4. | Can I run DOS binaries under FreeBSD? | ||||||
Yes, you can use emulators/doscmd, a DOS emulation program, available in the FreeBSD Ports Collection. Σημείωση:The doscmd program used to be an integrated part of FreeBSD, but was removed before the release of FreeBSD 5.3. If doscmd will not suffice, the add-on utility emulators/pcemu emulates an 8088 and enough BIOS services to run many DOS text mode applications. It requires the X Window System. | |||||||
16.5. | What do I need to do to translate a FreeBSD document into my native language? | ||||||
See the Translation FAQ in the FreeBSD Documentation Project Primer. | |||||||
16.6. | Why does my email to any address at FreeBSD.org bounce? | ||||||
The FreeBSD.org mail system implements some of the stricter Postfix checks on incoming mail and rejects mail that is either misconfigured or is potential spam. Your mail might bounce for one of the following reasons:
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16.7. | Where can I find a free FreeBSD account? | ||||||
While FreeBSD does not provide open access to any of their servers, others do provide open access UNIX® systems. The charge varies and limited services may be available. Arbornet, Inc, also known as M-Net, has been providing open access to UNIX® systems since 1983. Starting on an Altos running System III, the site switched to BSD/OS in 1991. In June of 2000, the site switched again to FreeBSD. M-Net can be accessed via telnet and SSH and provides basic access to the entire FreeBSD software suite. However, network access is limited to members and patrons who donate to the system, which is run as a non-profit organization. M-Net also provides an bulletin board system and interactive chat. Grex provides a site very similar to M-Net including the same bulletin board and interactive chat software. However, the machine is a Sun™ 4M and is running SunOS™. | |||||||
16.8. | What is | ||||||
SUP stands for Software Update Protocol, and was developed by CMU for keeping their development trees in sync. We used it to keep remote sites in sync with our central development sources. SUP is not bandwidth friendly, and has been retired. The current recommended method to keep your sources up to date is CVSup | |||||||
16.9. | What is the cute little red guy's name? | ||||||
He does not have one, and is just called «the BSD daemon». If you insist upon using a name, call him «beastie». Note that «beastie» is pronounced «BSD». You can learn more about the BSD daemon on his home page. | |||||||
16.10. | Can I use the BSD daemon image? | ||||||
Perhaps. The BSD daemon is copyrighted by Marshall Kirk McKusick. You will want to check his Statement on the Use of the BSD Daemon Figure for detailed usage terms. In summary, you are free to use the image in a tasteful manner, for personal use, so long as appropriate credit is given. If you want to use him commercially, you must contact Kirk McKusick. More details are available on the BSD Daemon's home page. | |||||||
16.11. | Do you have any BSD daemon images I could use? | ||||||
You will find eps and Xfig drawings under
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16.12. | I have seen an acronym or other term on the mailing lists and I do not understand what it means. Where should I look? | ||||||
Please see the FreeBSD Glossary. | |||||||
16.13. | Why should I care what color the bikeshed is? | ||||||
The really, really short answer is that you should not. The somewhat longer answer is that just because you are capable of building a bikeshed does not mean you should stop others from building one just because you do not like the color they plan to paint it. This is a metaphor indicating that you need not argue about every little feature just because you know enough to do so. Some people have commented that the amount of noise generated by a change is inversely proportional to the complexity of the change. The longer and more complete answer is that after a very long argument about whether sleep(1) should take fractional second arguments, Poul-Henning Kamp posted a long message entitled «A bike shed (any color will do) on greener grass...». The appropriate portions of that message are quoted below.
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Αυτό το κείμενο, και άλλα κείμενα, μπορεί να βρεθεί στο ftp://ftp.FreeBSD.org/pub/FreeBSD/doc/
Για ερωτήσεις σχετικά με το FreeBSD, διαβάστε την
τεκμηρίωση πριν να επικοινωνήσετε με την
<questions@FreeBSD.org>.
Για ερωτήσεις σχετικά με αυτή την τεκμηρίωση, στείλτε e-mail στην
<doc@FreeBSD.org>.