I have a 1-column file with
random numbers. this script runs
to subtract 1 to the number and
written to a file. With over
10,000 lines, it takes >2 minutes
to complete the loop operation.
is there an alternative awk/sed
for looping to reduce the wait?
Thanks!
#!/bin/ksh
for N in `cat... (2 Replies)
I'm trying the following as i wish to get the last field in a report containing several fields, each line can have more fields than the previous, so I tried
rvwords=`echo $rvstatus |wc -w`
rvstat=`echo $rvstatus |cut -f $rvwords`
but it prints the whole variable contents of $rvstatus rather... (6 Replies)
Hi... I want to know whether if there is any alternative for cron.:confused:
I had written a script which checks for all system/application processes every 15 min(placed in cron though). But looks funny - what if cron daemon isn't running!! and expecting that script to update the OUTPUT FILE... (5 Replies)
Hello to all board members!!
I have a problem on a HP-UX system. I should write a script. Therefore I need to search after IP addresses in the output of a command.
On Debian this works: ifconfig | egrep -o "{1,3}\.{1,3}\.{1,3}\.{1,3}"
The script where i need this is not ifconfig, but... (2 Replies)
I usually just browse the forum/google for answers, however I've been stuck on a problem for a number of hours now and I've decided to join up and actually ask I've searched the forum ad naseum in an attempt to find answer to my query, however so far I have been unsuccessful.
I'm no expert... (3 Replies)
Hi techies ..
This is my first posting hr ..
Am facing a serious performance problem in counting the number of lines in the file. The input files i get will be in some 10 to 15 Gb of size or even sometimes more ..and I will load it to db
I have used wc -l to confirm whether the loader... (14 Replies)
Is there any other editor, installed by 'default' in Sparc Solaris10, besides vi?
I'd like to avoid installing anything new.
If not, how to make vi more user-friendly?
thanks. (8 Replies)
Hi,
I have a large number of input files with two columns of numbers.
For example:
83 1453
99 3255
99 8482
99 7372
83 175
I only wish to retain lines where the numbers fullfil two requirements. E.g:
=83
1000<=<=2000
To do this I use the following... (10 Replies)
#!/bin/sh
label:
echo sql poll
v=`sqlplus -s <<!
HR/HR
set pages 0 echo off feed off
select distinct status from
emp
where
id=5;
!
`
echo $v;
echo it comes here after false
if
then
echo if condition true
sqlplus -l scott/tiger <<EOF
select * from department;
EXIT (2 Replies)
Example:
$ cat file1
2
3$ cat file2
1
2
3
4
5
6The following awk script works like a charm, NR==FNR is true for file1, the remainder runs for file2:
awk '
NR==FNR {A; next}
($1 in A)
' file1 file2
2
3Now have an empty file1:
>file1and run the awk script again.
The result is empty... (8 Replies)
Discussion started by: MadeInGermany
8 Replies
LEARN ABOUT DEBIAN
isympy
isympy(1)isympy(1)NAME
isympy - interactive shell for SymPy
SYNOPSIS
isympy [-c | --console]
isympy [ {-h | --help} | {-v | --version} ]
DESCRIPTION
isympy is a Python shell for SymPy. It is just a normal python shell (ipython shell if you have the ipython package installed) that exe-
cutes the following commands so that you don't have to:
>>> from __future__ import division
>>> from sympy import *
>>> x, y, z = symbols("xyz")
>>> k, m, n = symbols("kmn", integer=True)
So starting isympy is equivalent to starting python (or ipython) and executing the above commands by hand. It is intended for easy and
quick experimentation with SymPy. For more complicated programs, it is recommended to write a script and import things explicitly (using
the "from sympy import sin, log, Symbol, ..." idiom).
OPTIONS -c shell, --console=shell
Use the specified shell (python or ipython) as console backend instead of the default one (ipython if present or python otherwise).
Example: isympy -c python
FILES
${HOME}/.sympy-history
Saves the history of commands when using the python shell as backend.
BUGS
The upstreams BTS can be found at <http://code.google.com/p/sympy/issues/list> Please report all bugs that you find in there, this will
help improve the overall quality of SymPy.
SEE ALSO ipython(1), python(1)
2007-10-8 isympy(1)