Hi,
Please clear the 2 questions,
2 Questions,
1) Why the new as a operator? Is there any special reason why it can't be a function like malloc?
2) How are we considering sizeof(),new are as a opearartors? I know + - * / -> , . etc.. are operators, which criteria satisfied by sizeof()... (4 Replies)
hi
i am using the below code
grep -v '^$' file1.lst >file1.lst
but it gives file1.lst already exists.
And i want to over rite on the same file
Whats the work around? (5 Replies)
Hi,
I'm new to UNIX, at least shell programming and am having trouble figuring out a problem i'm having. In one section in my nested if statement, i want the program to test if the file does not exist, based on an argument supplied at the command line by the user. What i have is
elif ; then... (3 Replies)
I'm almost pulling out my hair trying to figure out what's wrong with this... there's no reason I can see that it shouldn't be working. It seems that the code acts as though the conditional statement is true no matter what - I've even tried removing the negation operator, but it always goes into... (5 Replies)
I have a string of commands I am piping some data through and I want to allow command line switches to select which commands are used. I want to do something like this: OPTION="| command3"
command1 -a -b c.txt | command2 -d -e $OPTION >result.txt
I want to do it that way because OPTION may be... (1 Reply)
All,
THe below is my script , when i use this i am getting nothing . could any one help me to know what is the use of the << operator below
su - $8 << supo
echo "exportsph $2 $1 $3 $4"
exportsph $2 $1 $3 $4
supo
i also tried as individual command su - userid << supo , when i do... (3 Replies)
im new to bash scripting and im just using online tutorials and trial and error. i wanted to write a script to read numbers from a file and find their sum:
#!/bin/bash
theSum=0
for line in $(cat numbers.txt)
do
let "theSum = theSum + $line"
echo "$line"
done
echo "The sum is... (3 Replies)
Hi,
I would like to ask if someone know how to test a files if exist the file is a nfs mount ufsdump archive file..
i used the test operator -f -a h almost all test operator but i failed
file1=ufs_root_image.dump
|| echo "files doesn't exist && exit 1
the false file1 is working but... (0 Replies)
Please show me how to make substitution over the contents of a file in a perl script.
In a perl script, the core part of substitution operation is
s/FINDPATTERN/REPLACEPATTERN/g;
However, I cannot figure out how to make the substitution occur over the contents of a file. The following... (3 Replies)
Hello all, I have two files which are cmd and disk.
`$cat cmd
lsdev | grep -iw`
`$cat disk
hdisk2`
Now I want to use the contents of both the files in a way such that `lsdev | grep -iw` command works for hdisk2 when I write the following script:
`!#/bin/sh
cmd1="$( sed -n... (4 Replies)
Discussion started by: ravi.trivedi
4 Replies
LEARN ABOUT REDHAT
drop_operator_class
DROP OPERATOR CLASS(7) SQL Commands DROP OPERATOR CLASS(7)NAME
DROP OPERATOR CLASS - remove a user-defined operator class
SYNOPSIS
DROP OPERATOR CLASS name USING access_method [ CASCADE | RESTRICT ]
INPUTS
name The name (optionally schema-qualified) of an existing operator class.
access_method
The name of the index access method the operator class is for.
CASCADE
Automatically drop objects that depend on the operator class.
RESTRICT
Refuse to drop the operator class if there are any dependent objects. This is the default.
OUTPUTS
DROP OPERATOR CLASS
The message returned if the command is successful.
DESCRIPTION
DROP OPERATOR CLASS drops an existing operator class from the database. To execute this command you must be the owner of the operator
class.
NOTES
The DROP OPERATOR CLASS statement is a PostgreSQL language extension.
Refer to CREATE OPERATOR CLASS [create_operator_class(7)] for information on how to create operator classes.
USAGE
Remove B-tree operator class widget_ops:
DROP OPERATOR CLASS widget_ops USING btree;
This command will not execute if there are any existing indexes that use the operator class. Add CASCADE to drop such indexes along with
the operator class.
COMPATIBILITY
SQL92
There is no DROP OPERATOR CLASS in SQL92.
SQL - Language Statements 2002-11-22 DROP OPERATOR CLASS(7)