When you try and rename it the following is given:

$ mv ––index.html index.html.renamed
mv: unrecognized option `––index.html’
Try `mv ––help’ for more information.

I also tried delimiting it the normal way, but it wouldn’t work either:

    mv \–\–index.html index.html.renamed

The correct way to rename it is:

    mv ./––index.html index.html.renamed

Because –– has special meaning, you can’t delimit it with a simple backslash (\), you have to put a path reference in there to delimit it. So my path working directory (pwd) was /home/user/data/ where the file was located, so I could use ./ to reference the current pwd. The other option is to put the full path in:

    mv /home/user/data/––index.html index.html.renamed

Hopefully this helps out some other Linux server administrator out there who’s mind it has slipped.

You need to use the usermod command. It can modify the system account files (such as /etc/passwd) to reflect the changes that are specified on the command line. The syntax is as follows:
usermod -l {new-login-name} {current-old-login-name}
In this example, rename login id from tom to jerry. Open a command-line terminal (select Applications > Accessories > Terminal), and then type the following command
$ sudo usermod -l jerry tom
To verify new changes, enter:
$ id jerry

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Here are a few tasks that you might want to consider using the command line for.

1. Resizing images

Unless you are doing some sort of cropping there is no reason to load up Photoshop or the Gimp. A simple command will usually suffice for almost all your image resizing needs.

    convert -resize 300 image.jpg image-small.jpg

If you finding yourself doing lots of image resizing during the day, this command could potentially save you a LOT of time. You can even do mass image resizing.

2. Adding a Drop Shadow to an Image

I found myself spending a ton of time adding drop shadows to images. Using a simple command I was able to create drop shadows in seconds.

convert screenshot.jpg \( +clone -background black -shadow 60×5+0+5 \) +swap -background white -layers merge +repage shadow.jpg

Note: You must have Imagemagick installed for this command to work. Debian/Ubuntu users can use apt-get install imagemagick.

Obviously, I don’t expect you to memorize this command. To shorten it use an alias.

3. Splice Together an MP3

If you want simple MP3 splicing this command has your back:

    cat 1.mp3 2.mp3 > combined.mp3

4. Clone a Hard Drive

DD is one the most simplistic and powerful image applications out there.

    dd if=/dev/hda of=/dev/hdb

5. Burn an ISO to a CD

Why open up K3B or some other program just to burn an ISO? Map this command to an alias and get burning.

    cdrecord -v speed=8 dev=0,0,0 name_of_iso_file.iso

Note: You need to get the info for the ‘dev=’ part by running ‘cdrecord -scanbus’

6. Video Conversions

Let’s say you want to convert an AVI to an Mpeg file:

ffmpeg -i video_origine.avi video_finale.mpg

Or convert an Mpeg to AVI:

    ffmpeg -i video_origine.mpg video_finale.avi

There are all sorts of things you can do with ffmpeg.

7. Replace Words in a Text File

No need to open up a GUI text editor when you have sed.

This command from Eric’s Wendelin’s blog will replace all instances of a color in CSS with another one.

    sed ’s/#FF0000/#0000FF/g’ main.css

ERROR: PleskFatalException
Unable to make action: Unable to manage service by websrvmng:
websrvmng: No such file ‘/usr/local/etc/rc.d/apache2.sh’:
No such file or directory System error 2: No such file or directory

Apache startup script name is specified with the following variable in /etc/psa/psa.conf file:

#apache startup script
HTTPD_SERVICE apache2

Find out what the actual apache startup script file name is, it may be either apache2 or apache2.sh:

# ls /usr/local/etc/rc.d/apache2*
/usr/local/etc/rc.d/apache2

then set the correct value in /etc/psa/psa.conf for HTTPD_SERVICE variable.

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yum update
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* addons: mirror.bytemark.co.uk
* atomic: www5.atomicorp.com
* base: mirror.sov.uk.goscomb.net
* extras: mirror.sov.uk.goscomb.net
* updates: mirror.sov.uk.goscomb.net

http://www4.atomicorp.com/channels/plesk/9.0/centos/5/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found

Solution:

To fix this we logged into the server and from /etc/yum.repos.d/ delete the plesk.repo and run the yum updater again.  Please make sure if you are primarly using atomic corps repo.

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We need to make sure the correct lib directories are setup in ldconfig. Edit the /etc/ld.so.conf file and add the following lines. After you save it, run the command ldconfig

/usr/local/lib
/usr/lib

Compiler install

Because in many cases no compiler or maybe other incompatbile compiler is installed, so you can get “fails sanity check” for example.

yum install gcc-c++

Some initial libraries

We like to install with yum because it is more easy like this.

yum install libogg zlib-devel libtool
rpm -ivh  http://rpm.livna.org/livna-release.rpm

Faac (http://sourceforge.net/projects/faac/files/)

FAAC is an Advanced Audio Coder (MPEG2-AAC, MPEG4-AAC). The goal of FAAC is to explore the possibilities of AAC and exceed the quality of the currently best MP3 encoders. If missing the package, go to sourceforge and download latest version or from mirror.

wget  http://superb-west.dl.sourceforge.net/sourceforge/faac/faac-1.28.tar.gz
tar xvfz faac-1.28.tar.gz
cd faac-1.28/
./bootstrap
./configure --enable-shared
make
make install
ldconfig

x264 (ftp://ftp.videolan.org/pub/videolan/x264/snapshots/)

x264 is a free library for encoding H264/AVC video streams. If missing from YUM, use link below, or find the latest one (or correct OS).

rpm -ivh <a href="http://dag.wieers.com/rpm/packages/yasm/yasm-0.6.2-1.el5.rf.x86_64.rpm">http://dag.wieers.com/rpm/packages/yasm/yasm-0.6.2-1.el5.rf.x86_64.rpm</a>
yum install yasm
wget  ftp://ftp.videolan.org/pub/x264/snapshots/x264-snapshot-20100607-2245.tar.bz2
tar xjvf  x264-snapshot-20100607-2245.tar.bz2
cd x264-snapshot-20100607-2245
./configure --enable-shared  --disable-asm
make
make install
ldconfig

OpenJPEG (http://code.google.com/p/openjpeg/downloads/list)

The OpenJPEG library is an open-source JPEG 2000 codec written in C language. It has been developed in order to promote the use of JPEG 2000, the new still-image compression standard from the Joint Photographic Experts Group (JPEG). In addition to the basic codec, various other features are under development, among them the JP2 and MJ2 (Motion JPEG 2000) file formats, an indexing tool useful for the JPIP protocol, JPWL-tools for error-resilience, a Java-viewer for j2k-images, …

wget  http://openjpeg.googlecode.com/files/openjpeg_v1_3.tar.gz
tar zxvf openjpeg_v1_3.tar.gz
cd OpenJPEG_v1_3
make
make install
ldconfig

LibTheora (http://downloads.xiph.org/releases/theora/)

Theora is a free and open video compression format from the Xiph.org Foundation. Like all our multimedia technology it can be used to distribute film and video online and on disc without the licensing and royalty fees or vendor lock-in associated with other formats. Theora scales from postage stamp to HD resolution, and is considered particularly competitive at low bitrates. It is in the same class as MPEG-4/DiVX, and like the Vorbis audio codec it has lots of room for improvement as encoder technology develops.

yum install libogg libogg-devel libvorbis libvorbis-devel
wget  http://downloads.xiph.org/releases/theora/libtheora-1.1.0.tar.gz
tar xjvf  libtheora-1.1.0.tar.gz
cd libtheora-1.1.0
./configure --enable-shared
make
make install

XVid (http://www.xvid.org/Downloads.43.0.html)

The Xvid video codec implements MPEG-4 Simple Profile and Advanced Simple Profile standards. It permits compressing and decompressing digital video in order to reduce the required bandwidth of video data for transmission over computer networks or efficient storage on CDs or DVDs. Due to its unrivalled quality Xvid has gained great popularity and is used in many other GPLed applications, like e.g. Transcode, MEncoder, MPlayer, Xine and many more.

wget  http://downloads.xvid.org/downloads/xvidcore-1.2.2.tar.gz
tar zxvf xvidcore-1.2.2.tar.gz
cd xvidcore
cd build/generic
./configure --enable-shared
make
make install

Yamdi (http://downloads.sourceforge.net/project/yamdi/yamdi/)

yamdi stands for Yet Another MetaData Injector and is a metadata injector for FLV files. It adds the onMetaData event to your FLV files. yamdi should run under *BSD, Linux and Win32

wget  "http://downloads.sourceforge.net/project/yamdi/yamdi/1.4/yamdi-1.4.tar.gz?use_mirror=garr"
tar zxvf yamdi-1.4.tar.gz
cd yamdi-1.4
gcc yamdi.c -o yamdi -O2 -Wall  -D_FILE_OFFSET_BITS=647
cp yamdi /usr/bin/

Lame MP3 encoder (http://nchc.dl.sourceforge.net/sourceforge/lame/)

Pure install of FFmpeg is not enough, the FLV (Flash Video Files) converted has no audio, because FLV audio codec is mp3, so you need LAME support.

wget "http://downloads.sourceforge.net/project/lame/lame/3.98.2/lame-398-2.tar.gz?use_mirror=garr"
tar xvzf lame-398-2.tar.gz
cd lame-398-2
./configure –-enable-shared
make
make install

FLVTool2 (http://rubyforge.org/frs/?group_id=1096&release_id=9694)

FLVTool2 is a manipulation tool for Macromedia Flash Video files (FLV). It can calculate a lot of meta data, insert an onMetaData tag, cut FLV files, add cue points (onCuePoint), show the FLV structure and print meta data information in XML or YAML. Type flvtool2 in command line to see help after install succeed.

yum install ruby
wget http://rubyforge.org/frs/download.php/17497/flvtool2-1.0.6.tgz
tar xvzf flvtool2-1.0.6.tgz
cd flvtool2-1.0.6/
ruby setup.rb config
ruby setup.rb setup
ruby setup.rb install

Finally FFMPEG

FFmpeg is a complete, cross-platform solution to record, convert and stream audio and video. It includes libavcodec – the leading audio/video codec library.

yum install subversion
svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg
cd ffmpeg
./configure --enable-libfaac --enable-shared --enable-memalign-hack --enable-gpl  --enable-libtheora --enable-libmp3lame --enable-libopenjpeg  --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree --enable-postproc --enable-avfilter  --enable-avfilter-lavf --enable-swscale
make
make install

Symlink some libraries if needed (ignore file exists errors):

ln -s /usr/local/lib/libavformat.so.50 /usr/lib/libavformat.so.50
ln -s /usr/local/lib/libavcodec.so.51 /usr/lib/libavcodec.so.51
ln -s /usr/local/lib/libavutil.so.49 /usr/lib/libavutil.so.49
ln -s /usr/local/lib/libmp3lame.so.0 /usr/lib/libmp3lame.so.0
ln -s /usr/local/lib/libavformat.so.51 /usr/lib/libavformat.so.51

Install ffmpeg-php (http://downloads.sourceforge.net/project/ffmpeg-php/)

ffmpeg-php is an extension for PHP that adds an easy to use, object-oriented API for accessing and retrieving information from video and audio files. It has methods for returning frames from movie files as images that can be manipulated using PHP’s image functions. This works well for automatically creating thumbnail images from movies. ffmpeg-php is also useful for reporting the duration and bitrate of audio files (mp3, wma…). ffmpeg-php can access many of the video formats supported by ffmpeg (mov, avi, mpg, wmv…)

wget "http://downloads.sourceforge.net/project/ffmpeg-php/ffmpeg-php/0.6.0/ffmpeg-php-0.6.0.tbz2?use_mirror=garr"
tar xjvf ffmpeg-php-0.6.0.tbz2
cd ffmpeg-php-0.6.0
phpize
./configure
make
make install

When encountering this error compiling ffmpeg-php:
/root/ffmpeg-php-0.6.0/ffmpeg_frame.c:421: error: ‘PIX_FMT_RGBA32′ undeclared (first use in this function) make: *** [ffmpeg_frame.lo] Error 1 ”

do this and after make command again:

vim ffmpeg_frame.c
:%s/PIX_FMT_RGBA32/PIX_FMT_RGB32/g
:wq

Now you need to copy the ffmpeg.so file that was created from it’s location (from the build) to /usr/local/lib/php/extensions/, it should look something like:

cp /usr/local/lib/php/extensions/no-debug-non-zts-????????????/ffmpeg.so /usr/local/lib/php/extensions/

This creates the ffmpeg.so file. Create a file /etc/php.d/gdffmpeg.ini
; Enable ffmpeg extension module (please use the correct path)
extension_dir = “/usr/lib64/php/modules/”
extension=ffmpeg.so

It is important to name it as gdffmpeg.ini because seems try to load this before gd.ini and then will work. Restart Apache (service httpd restart).

Mplayer & Codecs (http://www1.mplayerhq.hu/MPlayer/releases/)

MPlayer is a movie player which runs on many systems (see the documentation). It plays most MPEG/VOB, AVI, Ogg/OGM, VIVO, ASF/WMA/WMV, QT/MOV/MP4, RealMedia, Matroska, NUT, NuppelVideo, FLI, YUV4MPEG, FILM, RoQ, PVA files, supported by many native, XAnim, and Win32 DLL codecs. You can watch VideoCD, SVCD, DVD, 3ivx, DivX 3/4/5, WMV and even H.264 movies.

wget http://www.mplayerhq.hu/MPlayer/releases/codecs/essential-20071007.tar.bz2
tar xjvf essential-20071007.tar.bz2
mkdir /usr/local/lib/codecs/
mv essential-20071007/ /usr/local/lib/codecs/
chmod -R 755 /usr/local/lib/codecs/
wget http://www1.mplayerhq.hu/MPlayer/releases/MPlayer-1.0rc3.tar.bz2
tar xjvf  MPlayer-1.0rc3.tar.bz2
cd MPlayer-1.0rc3/
./configure
make
make install

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To hide the information_schema database from phpMyAdmin on a particular MySQL logical server, add the following line to the phpMyAdmin config.inc.php file:

Please note that this affects only phpMyAdmin, and users will still be able to use the information_schema database from other applications (for example, from the mysql command-line client).

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For fixing this issue you can use following workarounds:

Edit /etc/sysconfig/rhn/sources file for use different IDs for sources added by Parallels Installer. Need to edit between component selection and installation process start.

Disable up2date: Edit file /root/.autoinstallerrc

Reference: http://parallels.com/

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