Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Awk: use variable defined in begin Post 303009430 by genome on Thursday 14th of December 2017 11:12:36 AM
Old 12-14-2017
Awk: use variable defined in begin

Hi there,

I'm working with file more than 400K lines, 60 columns. Column count is going to be multiple of 12: 60, 12, 72 or so.
NF/12 gives me on how many iterations I've to do to check certain value.

For example: 7, 14th if only 24 columns in file.
7th, 14th and 21st if 36 columns in file.

I'd like to store and use NF/12 after calculating in BEGIN. But I can't use it.

Code:
head CHR_10_paste.info | awk ' BEGIN{ incr=NF/12 } NR>1 { print $incr }'

incr is 0 so this one-liner prints all the columns.
How do I use it later on once calculated in BEGIN?
 

10 More Discussions You Might Find Interesting

1. Linux

environment variable is not defined

moved to correct thread (0 Replies)
Discussion started by: alien12
0 Replies

2. Shell Programming and Scripting

Replace variable with a user defined variable

I have a file that has a list of entries in a column x z z z x y z The column can have any length and any number of any strings. I need to replace each unique string with a user defined number. I can filter the unique entries out using awk '{if (NF==5) print $2}' file | uniq | nl >... (1 Reply)
Discussion started by: ce124
1 Replies

3. Shell Programming and Scripting

Force Input in User Defined Variable

In a line such as: echo -n "How many days back would you like to check? "; read days How can I ensure that the user has a.) entered a number between 1-30 (not 0 or 31+) and b.) has not just hit enter (ie set it to "") and if it's entered wrong, how do I start the if statement over? I... (10 Replies)
Discussion started by: earnstaf
10 Replies

4. Shell Programming and Scripting

Finding Variable Value defined in a Script

Hi , I had a script in which there is a variable $LOG defined and I want to check where that variable is getting value from, is there a way I can check for that variable and it's value if it is defined in some other script function or script . I checked using command env and also export... (1 Reply)
Discussion started by: somu_june
1 Replies

5. Shell Programming and Scripting

Unable to add user defined variable

Hi, I have a user defined variable _TIME1=xxx I am using awk command for pattern matching. cat $_LOCATION/catalina.txt | awk '/^`$_TIME1`:??:??/' It not taking the value of $_TIME! eg:I am using the command to get all the patter from 12:00:00 to 12:59:59 The user defined variable... (2 Replies)
Discussion started by: ahamed
2 Replies

6. UNIX for Dummies Questions & Answers

Finding WHERE an environment variable is defined.

HI. I had an environment variable defined in my .bash_profile file and I deleted it. I opened a new terminal and looked inside .bash_profile and it's not there but when I type printenv MYCONFIG it reutrns what the value used to be in my .bash_profile still!! I did a grep for MYCONFIG and... (6 Replies)
Discussion started by: dissectcode
6 Replies

7. Shell Programming and Scripting

Defined Variable from text file

Hi Guys, I have one text file ABC.txt...It have 3 lines List=/home/klk/dir/ABC.txt Leajnk123 KJUHIO1234 IJOKIJ7676 I want use as different variable of each line.Just like X=firstline Y=Secound Line Z=Third Line (4 Replies)
Discussion started by: asavaliya
4 Replies

8. Shell Programming and Scripting

Question about awk - create a user-defined variable

Hi, guys, The content of file is below (from <UNIX® Shells by Example Fourth Edition>): My code is below: gawk -F'' ' { OFS = "****"; $3 = "(904)"; $8 = $5 + $6 + $7; print } ' lab3.data The result is below: So, where is the $1? Why is the variable $8 located at the wired position? (3 Replies)
Discussion started by: franksunnn
3 Replies

9. Shell Programming and Scripting

How do I get variable defined in BASH subshell outside?

I'm a BASH shell user (relatively new) I need to get a variable calculated in a subshell, outside the subshell, when it completes. I can do it, by writing the variable into a file, and then reading the file again when outside the subshell. I've tried lots of things from exporting to environmental... (3 Replies)
Discussion started by: goreilly
3 Replies

10. Shell Programming and Scripting

Usage of a variable in awk BEGIN

Hi, diffcount=`awk 'BEGIN { while ( getline < "/scripts/matt/text.server1.reference" ) { arr++ } } { if (!( $0 in arr ) ) { print } }' $TMPDIR/$(basename $0 .sh) | wc -l` if ]; then OK="OK - No change in the interfaces status" elif ]; then DIFF=`awk 'BEGIN {... (4 Replies)
Discussion started by: nms
4 Replies
CUBRID_NEXT_RESULT(3)							 1						     CUBRID_NEXT_RESULT(3)

cubrid_next_result - Get result of next query when executing multiple SQL statements

SYNOPSIS
bool cubrid_next_result (resource $result) DESCRIPTION
The cubrid_next_result(3) function is used to get results of next query if multiple SQL statements are executed and CUBRID_EXEC_QUERY_ALL flag is set upon cubrid_execute(3). PARAMETERS
o $result -$result comes from a call to cubrid_execute(3) RETURN VALUES
TRUE, when process is successful. FALSE, when process is unsuccessful. EXAMPLES
Example #1 cubrid_next_result(3) example <?php $conn = cubrid_connect("127.0.0.1", 33000, "demodb", "dba"); $sql_stmt = "SELECT * FROM code; SELECT * FROM history WHERE host_year=2004 AND event_code=20281"; $res = cubrid_execute($conn, $sql_stmt, CUBRID_EXEC_QUERY_ALL); get_result_info($res); cubrid_next_result($res); get_result_info($res); function get_result_info($req) { printf(" ------------ get_result_info -------------------- "); $row_num = cubrid_num_rows($req); $col_num = cubrid_num_cols($req); $column_name_list = cubrid_column_names($req); $column_type_list = cubrid_column_types($req); $column_last_name = cubrid_field_name($req, $col_num - 1); $column_last_table = cubrid_field_table($req, $col_num - 1); $column_last_type = cubrid_field_type($req, $col_num - 1); $column_last_len = cubrid_field_len($req, $col_num - 1); $column_1_flags = cubrid_field_flags($req, 1); printf("%-30s %d ", "Row count:", $row_num); printf("%-30s %d ", "Column count:", $col_num); printf(" "); printf("%-30s %-30s %-15s ", "Column Names", "Column Types", "Column Len"); printf("------------------------------------------------------------------------------ "); $size = count($column_name_list); for($i = 0; $i < $size; $i++) { $column_len = cubrid_field_len($req, $i); printf("%-30s %-30s %-15s ", $column_name_list[$i], $column_type_list[$i], $column_len); } printf(" "); printf("%-30s %s ", "Last Column Name:", $column_last_name); printf("%-30s %s ", "Last Column Table:", $column_last_table); printf("%-30s %s ", "Last Column Type:", $column_last_type); printf("%-30s %d ", "Last Column Len:", $column_last_len); printf("%-30s %s ", "Second Column Flags:", $column_1_flags); printf(" "); } ?> The above example will output: ------------ get_result_info -------------------- Row count: 6 Column count: 2 Column Names Column Types Column Len ------------------------------------------------------------------------------ s_name char 1 f_name varchar 6 Last Column Name: f_name Last Column Table: code Last Column Type: varchar Last Column Len: 6 Second Column Flags: ------------ get_result_info -------------------- Row count: 4 Column count: 5 Column Names Column Types Column Len ------------------------------------------------------------------------------ event_code integer 11 athlete varchar 40 host_year integer 11 score varchar 10 unit varchar 5 Last Column Name: unit Last Column Table: history Last Column Type: varchar Last Column Len: 5 Second Column Flags: not_null primary_key unique_key SEE ALSO
cubrid_execute(3). PHP Documentation Group CUBRID_NEXT_RESULT(3)
All times are GMT -4. The time now is 10:15 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy