Difference: LinuxUpgradeJuly2006 (7 vs. 8)

Revision 82006-08-22 - DaveCostello

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META TOPICPARENT name="SoftwareStuff"

Linux Changes, July 2006

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  -- JamesRoche - 10 Jul 2006
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sendmail client configuration
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sendmail client configuration

 Our fedora 5 workstation installation will contain a new sendmail client configuration as part of the continuing department email infrastructure upgrade process. This should be completely transparent to users. I announce this here simply to notify users that if they notice a problem or unexpected email behavior when sending email from a fedora 5 workstation it should be reported to labstaff so it can be addressed promptly. The configuration has now been installed on the two beta machines for testing before deployment. note: If your email client does not automatically append a fully qualified domain name (FQDN) to email addresses before sending mail you should consider updating your local aliases to include them ('somebody@somewhere.com' rather that just 'somebody'). In most cases the sendmail service will attempt to figure it out for you when mailing to local addresses but it is better practice to explicitly provide it.
-- DaveCostello - 14 Aug 2006

Pre-deployment Testing and Observations

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gcc version changes
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gcc version changes

 Fedora Core 3 uses gcc 3.4.4 but Fedora Core 5 will upgrade gcc to version 4.1. While testing recompilation of your source code here is a link to the changes, features, and fixes you'll find in gcc 4.1 http://gcc.gnu.org/gcc-4.1/changes.html
-- DaveCostello - 28 Jul 2006
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POSIX: sort and tail
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POSIX: sort and tail

 Warning: sort +N and tail +N no longer work - use sort -k +N and tail -n +N instead.
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testing fedora 5 desktops
It appears to be safe to login to the console of the test machine f5beta2 to test-drive the latest gnome and kde desktops in terms of not destroying your current desktop settings when logging back in later on a fedora 3 machine. I have only performed a quick test on an account that did not have a significantly customized desktop, but things seem cross compatible. I would avoid making custom changes to the fc5 version before the actual rollout though. You will notice a Link to Old Desktop icon added. Gnome test was pretty uneventful but the first fc5 KDE login hesitated for a minute or two during "init system services" and then complained about a SIGSEGV signal 11. Logging out and back in again, with a KDE session, the problem went away so it appeared to be a one time personal config update issue.
-- DaveCostello - 11 Jul 2006

=sort and tail

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=sort and tail

 Actually, you don't need the '+' on the numeric field with the new style of arguments.
sort -k 2 will sort on the second field. (So will sort -k +2.)
tail -n 5 will output the last 5 lines. tail -n +5 will output beginning with line 5.
-- MichaelScott - 14 Aug 2006
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testing fedora 5 desktops

It appears to be safe to login to the console of the test machine f5beta2 to test-drive the latest gnome and kde desktops in terms of not destroying your current desktop settings when logging back in later on a fedora 3 machine. I have only performed a quick test on an account that did not have a significantly customized desktop, but things seem cross compatible. I would avoid making custom changes to the fc5 version before the actual rollout though. You will notice a Link to Old Desktop icon added. Gnome test was pretty uneventful but the first fc5 KDE login hesitated for a minute or two during "init system services" and then complained about a SIGSEGV signal 11. Logging out and back in again, with a KDE session, the problem went away so it appeared to be a one time personal config update issue.
-- DaveCostello - 11 Jul 2006
 
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Xorg and Xwindows Development
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Xorg and Xwindows Development

 X.org X11R7.0 is included in Fedora Core 5. The new modular architecture of R7.0 enables easier driver upgrades and simplifies development. This also introduces several changes that could affect building X based applications. Old code that depends on hard-coded paths may need to be rebuilt.
From Fedora Core 5 Release Notes:
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  -- DaveCostello - 17 Aug 2006
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Mounting CDRom or USB devices

CDroms should automount when the disc is inserted into the drive which should provide reasonable convenience for most desktop users. The manual mounting system has changed however in FC5. For desktop users, removable media devices such as cdroms, floppies, and USB devices are no longer added to /etc/fstab and so can no longer be mounted via the mount(8) command (except by the root user). Unprivileged users must now use the

gnome-mount
gnome-umount
gnome-eject

commands to mount, unmount, and eject media. See

gnome-mount --help

-- DaveCostello - 22 Aug 2006

Linux Threads vs. POSIX Threads

LinuxThreads support has been removed. Fedora Core 4 was the last Fedora release to support LinuxThreads. The Native POSIX Threading Library (NPTL), which has been the default threading library for several RedHat/Fedora releases, has now replaced LinuxThreads completely.

-- DaveCostello - 22 Aug 2006

Some New Stuff in Fedora Core 5

valgrind got a leak?

Summary : Tool for finding memory management bugs in programs
Description :
Valgrind is a tool to help you find memory-management problems in your programs. When a program is run under Valgrind's supervision, all reads and writes of memory are checked, and calls to malloc/new/free/delete are intercepted. As a result, Valgrind can detect a lot of problems that are otherwise very hard to find/diagnose.

firefox 1.5

Finally the contemporary version that can use newer extensions Fedora does include Mozilla 1.7 for browsing but it will not be distributed in the future. Mozilla Firefox is the new improved browser you'll want ot use.

thunderbird 1.5

You won't find Mozilla mail from the mozilla suite. Mozilla Thunderbird is an excellent graphical email client with lots of features and great personalized Junk mail control.

gnome desktop 2.14

Latest gnome desktop enhancements.

kde desktop 3.5

Latest KDE desktop enhancements.

subversion 1.3

update version of subversion source code control

-- DaveCostello - 22 Aug 2006

 

 
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