set serveroutput on size 100000
DECLARE
flag VARCHAR2(50);
STATEMENT VARCHAR2(255);
BEGIN
dbms_output.enable(100000);
SELECT SUBSTR(flag, 1,2)
INTO flag
FROM xxx.sms;
IF flag = 1 THEN
dbms_output.put_line('welcome');
ELSE
dbms_output.put_line('try again');
END IF;
END ;
Hi,
Off late I had been looking at the differences b/w select() & poll() system calls. The requirement is to reduce the overhead, processor power in waiting for the data. In the kind of connections under consideration there would be very frequent data arriving on the sockets, so poll() fares... (12 Replies)
We are using the line #!/usr/bin/ksh in the script, to run the script in ksh. If I have Bash shell and Ksh, how to select the shell to run the script during runtime?
Thanks in advace
Victor (2 Replies)
Please provide the solution for the following scenario:
1) There are two process named as ProcessA and ProcessB
2) ProcessA has opend a named pipe in read mode.This has been made as blocking mode.
3) ProcessB opens this pipe and writes in Blocking mode.So wat happens is even if Process A goes... (2 Replies)
I've a file like this:
andrea andre@lol.com october
antonio@lol.com
marco 45247@pop.com
kk@pop.com may
pollo@lol.com
mary mary@lol.com
can I select only the column with email adress?
can I utilise a filter with @ ?
I want obtain this:
... (2 Replies)
Hi I have i doubt, actually i have to select everything before a word(pattern).For that i am using sed
i am using the below line of code but it is not working i am getting a blank instead..
sed -n '/regexp/{g;1!p;};h' file1
Can anyone help?
Thanks (15 Replies)
Is select only supposed to report state changes on an FD's, state, whether or not it had pending input available in the first place? I've got a situation where select() repeatedly reports no FD's ready for stdin when there's lots of data available. And if it only reports changes, how is this... (2 Replies)
Hello,
I have kubuntu on my laptop and now I decided to switch to Windows 7. I made the bios settings properly (first choice is boot from cd\vd) but I see the error
" reboot and select proper Boot device or insert Boot media in select Boot device and press a key "
I have tried CD and... (0 Replies)
I have created two sockets and binded both. My requirement is that 2nd socket must send/ recv data only on expiration of timeval(tv). but the 1st socket must keep on send/recv the data without waiting for the 2nd socket completion......
I have posted my code below......
In this code the 2nd... (3 Replies)
Hi
I'm using the "select" command in the global_env.sh to log in to the application directory. This file is called in .bashrc profile.
Sample code:
Filename: global_env.sh
set -o vi
export severname=$(uname -n)
printf '%s\n%30s\n%s\n' "***********************" "Welcome to $severname"... (6 Replies)
Discussion started by: cheers799
6 Replies
LEARN ABOUT CENTOS
column
COLUMN(1) User Commands COLUMN(1)NAME
column - columnate lists
SYNOPSIS
column [options] file...
DESCRIPTION
The column utility formats its input into multiple columns. Rows are filled before columns. Input is taken from file or, by default, from
standard input. Empty lines are ignored.
OPTIONS -c, --columns width
Output is formatted to a width specified as number of characters.
-t, --table
Determine the number of columns the input contains and create a table. Columns are delimited with whitespace, by default, or with
the characters supplied using the separator. Table output is useful for pretty-printing.
-s, --separator separators
Specify possible table delimiters (default is whitespace).
-o, --output-separator separators
Specify table output delimiter (default is two whitespaces).
-x, --fillrows
Fill columns before filling rows.
-h, --help
Print help and exit.
ENVIRONMENT
The environment variable COLUMNS is used to determine the size of the screen if no other information is available.
EXAMPLES
sed 's/#.*//' /etc/fstab | column -t
BUGS
The util-linux version 2.23 changed -s option to be non-greedy, for example:
$ printf "a:b:c
1::3
" | column -t -s ':'
old output:
a b c
1 3
new output (since util-linux 2.23)
a b c
1 3
SEE ALSO colrm(1), ls(1), paste(1), sort(1)HISTORY
The column command appeared in 4.3BSD-Reno.
AVAILABILITY
The column command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
util-linux October 2010 COLUMN(1)