Important Redhat Linux Knowledge

Important Redhat Linux Knowledge

ln -s file linkname Creates a symbolic link.
rpm -qa Shows all installed RPM packages.
gphoto2 -P Downloads all photos from camera.
gphoto2 -D -R Deletes all photos on camera.
cp -r sourcedir targetdir Copy source directory tree into target directory.
#!/bin/sh Starting line of shell scripts.
#!/usr/bin/perl Starting line of PERL script.
/dev/sda1 /mnt/usb auto rw,user,noauto 0 0 Line in /etc/fstab to mount USB MP3 player.
grep keyword file Searches for keyword in file.
PATH=$PATH:directory Adds directory to path, put in /etc/bashrc.
/etc/rc.d/rc.local Put programs to be started at book time here.
rm -rf directry Deletes directory without needless questions.
rpm -vv --rebuilddb Rebuilds RPM database. Delete /var/lib/rpm/_db* first.
find / -name filename Searches filesystem for this filename.
chown -R user directory Change ownership of directory and files in there.
rpm -qpi file.rpm Displays RPM informations.
rpm -qpl file.rpm Lists files inside RPM.
/etc/inittab Where you set the default runlevel.
SET PASSWORD=PASSWORD('pw'); Sets password in mysql.
locate -u Builds the locate file database, starting at root.
smbclient //80.218.116.40/dan_c Access a windows shared folder,
smbmount //80.218.116.40/dan_c /mnt/laptop Mount a windows shared folder,
/etc/rc.d/rc.local Add your own services to startup file
cat /proc/modules shows all the loaded modules
mkisofs -r -J -D -f -V "label" -o /tmp/cd.img /burn_dir Create ISO image for burning.
ixus_capture.tar.bz2 Captures images from a CANON IXUS in remote control mode.
mount -t iso9660 -o ro,loop=/dev/loop0 /tmp/cd.img /mnt/test/ Test-Mount a CD Image
xhost local:root Do this, if root can't connect to the X server anymore!
netstat -tulpen What ary my open ports and what prog listens there?
avisplit -i film.avi -t 37:00.0-40:00.0[,..] -o stueck Filmteil ausschneiden.
gmplayer -sub subtitles movie View a movie with subtitles on mplayer.
( dump -0f - / ) | ( cd /mnt/linux ; restore -rf - ) Copy whole linux partition to another.
install perl module a) CPAN b) ppm (dos) c) Build a) su -c " -MCPAN -e ' install NAME'" b)ppm, install NAME c) perl Build.PL --download=/temp
PS1='\w>' Nice bash prompt. Append this line to .bashrc
mplayer -> audio settings -> sdl -> alsa To hear mplayer and xmms sound at same time.
http://www.cs.wcupa.edu/~rkline/fc1-notes/reference.html linux basic knowlege
mount -t cifs //130.92.40.45/D$ /mnt/lcms -o user=Administrator Mount windows share on FC2 (must be IP!, don't specify pwd in comand)
smbpasswd -a nyk Add a samba password for a linux user.
nano /usr/portage/profiles/package.mask Edit the masked package list of portage.
ssh-keygen -f .ssh/identity -t dsa Generates private and public key for this machine
rsync -vrpe ssh srcdir user@server:existing_path/maybe_existing_dir Copy srcdir with content to server to to a path with a dir that doesn't exist maybe -> creates it!
ln -s /dev/null /home/nyk/.recently-used remove .recently-used first. then it stays gone!
/var/lib/portage/world Installed portage packages
/usr/portage/sys-kernel/gentoo-dev-sources/Changelog Kernel Changelog
recode MacCentralEurope..ISO-8859-1 file.txt Convert Umlaute from mac to unix
emerge -vp mplayer What use flags can be used with this ebuild?
xhost + Solves this problem: Xlib: connection to ":0.0" refused by server
xhost - && xhost +localhost To make it secure again...
media-fonts/corefonts For better fonts in openoffice on gentoo.
equery u k3b Show lots of info about USE flags.
ALTER TABLE unfest_weitere DROP PRIMARY KEY; Primary Key entfernen von Tabelle
ssh -L 7777:proxy.unibe.ch:80 fankhaus@ubecx.unibe.ch Proxy tunnel in die Uni
init-connect="SET NAMES utf8" Make mysql work with UTF8 zope

ln -s file linkname		Creates a symbolic link.
rpm -qa		Shows all installed RPM packages.
gphoto2 -P		Downloads all photos from camera.
gphoto2 -D -R		Deletes all photos on camera.
cp -r sourcedir targetdir		Copy source directory tree into target directory.
#!/bin/sh		Starting line of shell scripts.
#!/usr/bin/perl		Starting line of PERL script.
/dev/sda1 /mnt/usb auto rw,user,noauto 0 0		Line in /etc/fstab to mount USB MP3 player.
grep keyword file		Searches for keyword in file.
PATH=$PATH:directory		Adds directory to path, put in /etc/bashrc.
/etc/rc.d/rc.local		Put programs to be started at book time here.
rm -rf directry		Deletes directory without needless questions.
rpm -vv --rebuilddb		Rebuilds RPM database. Delete /var/lib/rpm/_db* first.
find / -name filename		Searches filesystem for this filename.
chown -R user directory		Change ownership of directory and files in there.
rpm -qpi file.rpm		Displays RPM informations.
rpm -qpl file.rpm		Lists files inside RPM.
/etc/inittab		Where you set the default runlevel.
SET PASSWORD=PASSWORD('pw');		Sets password in mysql.
locate -u		Builds the locate file database, starting at root.
smbclient //80.218.116.40/dan_c		Access a windows shared folder,
smbmount //80.218.116.40/dan_c /mnt/laptop		Mount a windows shared folder,
/etc/rc.d/rc.local		Add your own services to startup file
cat /proc/modules		shows all the loaded modules
mkisofs -r -J -D -f -V "label" -o /tmp/cd.img /burn_dir		Create ISO image for burning.
ixus_capture.tar.bz2		Captures images from a CANON IXUS in remote control mode.
mount -t iso9660 -o ro,loop=/dev/loop0 /tmp/cd.img /mnt/test/		Test-Mount a CD Image
xhost local:root		Do this, if root can't connect to the X server anymore!
netstat -tulpen		What ary my open ports and what prog listens there?
avisplit -i film.avi -t 37:00.0-40:00.0[,..] -o stueck		Filmteil ausschneiden.
gmplayer -sub subtitles movie		View a movie with subtitles on mplayer.
( dump -0f - / ) \| ( cd /mnt/linux ; restore -rf - )		Copy whole linux partition to another.
install perl module a) CPAN b) ppm (dos) c) Build		a) su -c " -MCPAN -e ' install NAME'" b)ppm, install NAME c) perl Build.PL --download=/temp
PS1='\w>'		Nice bash prompt. Append this line to .bashrc
mplayer -> audio settings -> sdl -> alsa		To hear mplayer and xmms sound at same time.
http://www.cs.wcupa.edu/~rkline/fc1-notes/reference.html		linux basic knowlege
mount -t cifs //130.92.40.45/D$ /mnt/lcms -o user=Administrator		Mount windows share on FC2 (must be IP!, don't specify pwd in comand)
smbpasswd -a nyk		Add a samba password for a linux user.
nano /usr/portage/profiles/package.mask		Edit the masked package list of portage.
ssh-keygen -f .ssh/identity -t dsa		Generates private and public key for this machine
rsync -vrpe ssh srcdir user@server:existing_path/maybe_existing_dir		Copy srcdir with content to server to to a path with a dir that doesn't exist maybe -> creates it!
ln -s /dev/null /home/nyk/.recently-used		remove .recently-used first. then it stays gone!
/var/lib/portage/world		Installed portage packages
/usr/portage/sys-kernel/gentoo-dev-sources/Changelog		Kernel Changelog
recode MacCentralEurope..ISO-8859-1 file.txt		Convert Umlaute from mac to unix
emerge -vp mplayer		What use flags can be used with this ebuild?
xhost +		Solves this problem: Xlib: connection to ":0.0" refused by server
xhost - && xhost +localhost		To make it secure again...
media-fonts/corefonts		For better fonts in openoffice on gentoo.
equery u k3b		Show lots of info about USE flags.
ALTER TABLE unfest_weitere DROP PRIMARY KEY;		Primary Key entfernen von Tabelle
ssh -L 7777:proxy.unibe.ch:80 fankhaus@ubecx.unibe.ch		Proxy tunnel in die Uni
init-connect="SET NAMES utf8"		Make mysql work with UTF8 zope