We have started to us the su option on our production server. We log in with our own id and then su into a special id to perform various tasks. This allows our actions to be monitored.
I need to know how to use the su option when doing an ftp between two servers. I noticed that when I log into... (1 Reply)
my yacc output file y.tab.c is not compiling using cc y.tab.c -ly command
.possibily option flag -ly is not correct.i m using red hat linux 9.please give solutions. (4 Replies)
Hi,
I need one help for choosing best option among sed, perl and awk.
I need to search and replace thousand files for a text and need to replace it. I am in confusion for choosing the option for best results.
Because by using sed option its taking too much time for searching and replacing... (3 Replies)
Hi all,
I am parsing command line options using getopts.
The problem is that mandatory argument options following ":" is taking next option as argument if it is not followed by any argument.
Below is the script:
while getopts :hd:t:s:l:p:f: opt
do
case "$opt" in
-h|-\?)... (2 Replies)
hi everybody, can somebody tell me what -R option on g++ on solaris means :
g++ -DAIX -fpic -static -o printps printps.o -L/epost2/blitz/xercesc1_1 /lib -L/oracle/OraHome/lib32/ L/epost2/blitz/lib -lxerces-c1_1 -lhmltods -lhmlt ops -lgeneric -lnotify -lutil -lclntsh `cat... (0 Replies)
Hello,
I am still in the process of learning Shell Programming. The online manual, that I am referring to had following question:
I made a script as follows:
df --block-size=1GB | tr -s ' '| cut -d' ' -f2,5 | grep -v 1GB* | sort -k1,2n | tail -1 | cut -d' ' -f2 | cut -d '%' -f1 and it... (2 Replies)
To find all the files in your home directory that have been edited in some way since the last tar file, use this command:
find . -newer backup.tar.gz
Is anyone familiar with an older solution?
looking to identify files older then 15mins across several directories.
thanks,
manny (2 Replies)
Hi,
I'm new to shell scripting and I'm trying to read some code I need to use. Could you help me out on what it's doing? I read this as.... if the directory has files then rm all the files in that directory. I'm not sure....
if ; then
run "rm -rf ${TSP_FILEPATH_PLUGIN_DIR}";
fi
run... (8 Replies)
Hi,
I installed some packages required by an app built with python.
But when I try python setup.py install, I get the following error:
/opt/csw/lib/gcc/sparc-sun-solaris2.10/5.2.0/../../../../sparc-sun-solaris2.10/bin/as: unrecognized option `-m32'
Could anyone tell me what's wrong... (4 Replies)
Discussion started by: Kimkun
4 Replies
LEARN ABOUT REDHAT
pdl::philosophy
PHILOSOPHY(1) User Contributed Perl Documentation PHILOSOPHY(1)NAME
PDL::Philosophy -- what's behind PDL?
DESCRIPTION
This is an attempt to summarize some of the common spirit between pdl developers in order to answer the question "Why PDL"? If you are a
PDL developer and I haven't caught your favorite ideas about PDL, please let me know!
An often-asked question is: Why not settle for some of the existing systems like Matlab or IDL or GnuPlot or whatever?
Major ideas
The first tenet of our philosophy is the "free software" idea: software being free has several advantages (less bugs because more people
see the code, you can have the source and port it to your own working environment with you, ... and of course, that you don't need to pay
anything).
The second idea is a pet peeve of many: many languages like matlab are pretty well suited for their specific tasks but for a different
application, you need to change to an entirely different tool and regear yourself mentally. Not to speak about doing an application that
does two things at once... Because we use Perl, we have the power and ease of perl syntax, regular expressions, hash tables etc at our
fingertips at all times. By extending an existing language, we start from a much healthier base than languages like matlab which have
grown into existence from a very small functionality at first and expanded little by little, making things look badly planned. We stand by
the Perl sayings: "simple things should be simple but complicated things should be possible" and "There is more than one way to do it"
(TIMTOWTDI).
The third idea is interoperability: we want to be able to use PDL to drive as many tools as possible, we can connect to OpenGL or Mesa for
graphics or whatever. There isn't anything out there that's really satisfactory as a tool and can do everything we want easily. And be por-
table.
The fourth idea is related to PDL::PP and is Tuomas's personal favorite: code should only specify as little as possible redundant info. If
you find yourself writing very similar-looking code much of the time, all that code could probably be generated by a simple perl script.
The PDL C preprocessor takes this to an extreme.
Minor goals and purposes
We want speed. Optimally, it should ultimately (e.g. with the Perl compiler) be possible to compile PDL::PP subs to C and obtain the top
vectorized speeds on supercomputers. Also, we want to be able to calculate things at near top speed from inside perl, by using dataflow to
avoid memory allocation and deallocation (the overhead should ultimately be only a little over one indirect function call plus couple of
ifs per function in the pipe).
We want handy syntax. Want to do something and cannot do it easily? Tell us about it...
We want lots of goodies. A good mathematical library etc.
AUTHOR
Copyright(C) 1997 Tuomas J. Lukka (lukka@fas.harvard.edu). Redistribution in the same form is allowed but reprinting requires a permission
from the author.
perl v5.8.0 1999-12-09 PHILOSOPHY(1)