find . -ls | grep -i <filename>
that means find all files from current dir and below, and get file date etc with ls and then find those matching <filename>. The ‘-i’ argument tells grep to ignore the case (uppercase/lowercase) of characters in the filename.
type edquota <username> as root on thuban.
this drops you into a vi editing session.
change the quota as desired and then exit the session.
If you are not familiar with vi, you may find more details on how to edit this file under the “new user” post, where the setting up of a quota for a new user is discussed.
–Joel
Added by jmw 2020 may 28: Maybe these konqueror and kwrite config hints are still somewhat useful for nautilus and kate???
I find konqueror the best file browser for linux. To customize it a little, for example to get .idl files to open with my favorite text editor, kwrite:
with konqueror running:
settings>>configure konqueror gives some options like what your home dir should be (eg /home/youusername
to make conqueror behave a certain way with a certain kind of file, i made in my home dir (/home/jweisber) a file called dummy.idl
if you select it inside konqueror (one click to highlight it)
go to edit>properties
it should pop open a window labelled “Properties for dummy.idl – Konqueror”
‘way to the right of “type” is an icon of a bunch of tools. push on it.
it should pop open a window labelled “Edit file type application/idl KDEditFileType- Konqueror”
if its not already there, add a filename pattern of *.idl
that means any file ending with that will be treated in the way you are getting ready to set up
under application preference order, enter
kwrite
if you wish, you can also associate a pretty icon with *.idl by clicking on the “?” icon to left of “filename patterns”
click ok and from now on , when you dble-click on any file ending in .idl, it should open it with kwrite (see addition below)
(you may have to entirely quit and restart konqueror for the new properties to take)
–jmw january 2008
——addition feb 2008 – to get kwrite to use “syntax highlighting” (ie to color idl files with a certain color set; fortran etc etc):
open an idl file in kwrite.
in the kwrite toolbar up top, hit settings>configure editor>highlighting
now here is what took me more time than i am willing to admit:
the panel should now be labelled highlighting rules.
the first thing to do is to select a type from the pulldown menu near the top; eg “sources idl ”
then inside properties:file extensions, type *.pro;*.idl;*.batch
inside properties: MIME types, type application/idl
then hit the icon on the far right of this line and get a panel saying “Select the mimetypes you want highlighted using sources/idl syntax highlight rules”
and check the relevant mime types.
(note if the right mime types arent there, see joel)
note that some of these properties do not “take” until you jump out of konqueror and restart it!
There is a faily brain-dead unix utilitiy for differencing two files:
diff file1 file2
There is a lovely graphical version on linux called kompare. i highly recommend it (jmw).
Its output can be exported as text to send to distant colleagues. Furthermore the following diff command gives similar (text) output – much to be preferred to raw diff:
diff -U 3 -dHrN — file1 file2
(the 3 means it places 3 lines of context around the change to help you visualize it)
–Joel
As of this post date 2007, the Astro network syncs thuban’s sudoers file to the other workstations, just as it does with user accounts. Please contact fullerj with any problems regarding sudo.
OUT OF DATE as of 2008-11-01.
Here is how to set the path or add to the path for all users when they log in. The procedure depends on whether the users’ shell is tcsh (usual case) or bash. (To determine if your shell is tcsh, type ‘printenv SHELL’.)
———————
TCSH:
For tcsh users, the file to modify is /etc/csh.login. (Also note that other startup conditions can be set for all users in /etc/csh.cshrc). To add an environment variable simply type
setenv JAVA_HOME /usr/java/1.3.1
To append to the Path in say YOUR OWN .cshrc, type:
setenv PATH “${PATH}:/path/to/be/added”
(This will append your new desired path to the path set for everyone in /etc/csh.login)
————————————————-
BASH:
For users that like bashrc, you can modify /etc/bashrc to add the necessary path or variable. To add a variable, for instance java’s home directory, simply type
export JAVA_HOME=”/usr/java/jdk1.3.1″
If you wanted to add an extra path to sys set up path in YOUR OWN bashrc, type:
export PATH=$PATH:path/to/be/added
Joel installed uncompress onto Mirzam.
He got the rpm for “ncompress” at
http://rpm.pbone.net/index.php3/stat/4/idpl/2406147/com/ncompress-4.2.4-31.i386.rpm.html
We have two tape drives now attached to Algol. The first is an exabyte tape drive listed under
/dev/st0 (or /dev/nst0 depending on if you are using no rewind or not)
The SDLT 320 tape drive is listed under /dev/st1 (/dev/nst1).
To read data from the exabyte. Simply CD into the directory you want to put your data in. Then use the command:(must be run as root)
>>tar xvf /dev/st0
If this fails, try setting the bock size and density using these two commands and then try again.
>>mt setdensity 0x00
>>mt setblk 0
To extract from the SDLT tape drive, the tar command should work as well.
WARNING: When retrieving data from tape, make sure the directory you are in is empty as you can overwrite data files without even realizing it.
OUT OF DATE as of 2008-11-01.
when thunderbird died, from the redhat applications internet menu, Josh showed Joel how to fix it.
As root on /usr/share/applications, fix mozilla-thunderbird.desktop
In this particular case, I had to change to
Exec=/usr/bin/thunderbird
Icon=thunderbird.png
OUT OF DATE as of 2008-11-01.
OUT OF DATE as of 2008-11-01.
Steps to configure an astronomy department linux client computer.