Could someone give me a quick simple explanation for the AWK command.
And also help me to explain the code i have made. I have made some general comments about it myself. I was wondering if people could help me with the rest:
Hi,
Could anyone please explain why we have arr=1 - what does this statement do?
awk -F\; 'FNR==NR{arr=1;next};$3 in arr' core.txt gmrd.txt
Any help appreciated (2 Replies)
Hi I am new to shell script programming...
want to know the process of the following:
if
then
echo "$0: missing argument for option(s) :$MISSINGOPTARG"
echo "usage" $USAGE"
exit 1
fi (1 Reply)
Hi
I have a line/command which greps certain pattern () from the file and 22 lines AFTER that:
nawk '/\/{c=22}c&&c--' input_file
Can somebody explain the coding in this command (what " c&&c-- " does)? and how to modify this command to output 22 lines BEFORE this pattern () Thanks a lot ... (3 Replies)
I have the following piece of codes. Please explain it to me in great detail how are these codes working.
1. #include <stdio.h>
int main(){
int x;
x=0;
while (x<2 && fork()){
if (!fork()) execlp("echo","x++","x",0);
x++;
system("echo x+x");
}
}
2.
#include <stdio.h>
int i;... (1 Reply)
Can you please explain the following code plz?
my_cd=' '
while getopts :e: OPTION;
do
case "$OPTION" in
e) my_cd ="$OPTARG";;
esac
done
if ; then
echo " >>> ERROR - I am wrong"
echo " >>> ERROR - Hello"
exit 99
fi
What I don't understand is what is OPTION or... (3 Replies)
Hello,
I have recently come across this awk program. Can some one shed some light on what is taking place.
awk '{!a++}END{for(i in a) if ( a >10 ) print a,i }' $FILE
Best Regards,
jaysunn (1 Reply)
Hi all,
I need your help in understanding the meaning and syntax of the below nawk line.
Here is an extract of a script which I use daily and works well. The script extracts the hostnames and messages within a syslog file. I would also like to extract the message time in the 3rd column by... (2 Replies)
I need someone to tell me how exactly works the following code αfter /etc/passwd :eek::
cat /etc/passwd|grep "^:"|sed '1,$s/^\(*\):*:\(*\):.*$/ \1 \2 /'|sort -nrk3 -t:I want a good explanation to understand the code please (4 Replies)
Hi. Can somebody please explain the following lines of KSH code for me? The code checks all sub directories in a specific location which are numbered (E.g. test_01, test_02 ... etc.), then finds the one with highest number and extracts that number from the dir name into the variable num. I'd just... (9 Replies)
Discussion started by: user052009
9 Replies
LEARN ABOUT PHP
cubrid_fetch_field
CUBRID_FETCH_FIELD(3) 1 CUBRID_FETCH_FIELD(3)cubrid_fetch_field - Get column information from a result and return as an objectSYNOPSIS
object cubrid_fetch_field (resource $result, [int $field_offset])
DESCRIPTION
This function returns an object with certain properties of the specific column. The properties of the object are:
o $name
-column name
o $table
-name of the table that the column belongs to
o $def
-default value of the column
o $max_length
-maximum length of the column
o $not_null
-1 if the column cannot be NULL
o $primary_key
-1 if the column is a primary key
o $unique_key
-1 if the column is an unique key
o $multiple_key
-1 if the column is a non-unique key
o $numeric
-1 if the column is numeric
o $blob
-1 if the column is a BLOB
o $type
-the type of the column
o $unsigned
-1 if the column is unsigned
o $zerofill
-1 if the column is zero-filled
PARAMETERS
o $result
-$result comes from a call to cubrid_execute(3)
o $field_offset
- The numerical field offset. If the field offset is not specified, the next field (that was not yet retrieved by this function)
is retrieved. The $field_offset starts at 0.
RETURN VALUES
Object with certain properties of the specific column, when process is successful.
FALSE on failure.
EXAMPLES
Example #1
cubrid_fetch_field(3) example
<?php
$conn = cubrid_connect("localhost", 33000, "demodb");
$req = cubrid_execute($conn, "SELECT event_code,athlete_code,nation_code,game_date FROM game WHERE host_year=1988 and event_code=20001;");
var_dump(cubrid_fetch_row($req));
cubrid_field_seek($req, 1);
$field = cubrid_fetch_field($req);
printf("
--- Field Properties ---
");
printf("%-30s %s
", "name:", $field->name);
printf("%-30s %s
", "table:", $field->table);
printf("%-30s "%s"
", "default value:", $field->def);
printf("%-30s %d
", "max length:", $field->max_length);
printf("%-30s %d
", "not null:", $field->not_null);
printf("%-30s %d
", "primary key:", $field->primary_key);
printf("%-30s %d
", "unique key:", $field->unique_key);
printf("%-30s %d
", "multiple key:", $field->multiple_key);
printf("%-30s %d
", "numeric:", $field->numeric);
printf("%-30s %d
", "blob:", $field->blob);
printf("%-30s %s
", "type:", $field->type);
printf("%-30s %d
", "unsigned:", $field->unsigned);
printf("%-30s %d
", "zerofill:", $field->zerofill);
cubrid_close_request($req);
cubrid_disconnect($conn);
?>
The above example will output:
array(4) {
[0]=>
string(5) "20001"
[1]=>
string(5) "16681"
[2]=>
string(3) "KOR"
[3]=>
string(9) "1988-9-30"
}
--- Field Properties ---
name: athlete_code
table: game
default value: ""
max length: 0
not null: 1
primary key: 1
unique key: 1
multiple key: 0
numeric: 1
blob: 0
type: integer
unsigned: 0
zerofill: 0
PHP Documentation Group CUBRID_FETCH_FIELD(3)