Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Can someone please explain why we need to set ORS in below awk code? Post 303029050 by Tanu on Sunday 20th of January 2019 01:46:45 AM
Old 01-20-2019
Can someone please explain why we need to set ORS in below awk code?

Question: Write a command to print the fields in a text file in reverse order?
Code:
awk 'BEGIN {ORS=""} { for(i=NF;i>0;i--) print $i," "; print "\n"}' filename

I was thinking it should be (what is the need to set ORS="" ? )-
Code:
awk 'BEGIN { for(i=NF;i>0;i--) print $i," "; print "\n"}' filename

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

could someone explain this code

hey peeps could someone explain what this part of the code means: 'if echo $* | grep -q' $i '|| thanks tHe_nEw_GuY (2 Replies)
Discussion started by: the_new_guy
2 Replies

2. Shell Programming and Scripting

rs and ors in gawk ...????

:D dear members I have a good knowledge of gawk and seem to do quite well with it.. but I have never understood what the use of the rs and ors are for or how they are used.. i am thinking they are for seperating lines and paragraphs but i have absolutely no idea how to make it work, if that is what... (2 Replies)
Discussion started by: moxxx68
2 Replies

3. UNIX for Advanced & Expert Users

explain the code

Hi , Can anyone explains what does the below highlighted statements means: # Set environment variables . ${0%/*}/wrkenv.sh jobName_sh=${0##*/} jobName=${jobName_sh%.*} Thanks, Sri (1 Reply)
Discussion started by: srilaxmi
1 Replies

4. Shell Programming and Scripting

Can any one explain what this code will do

ccc_con,CCC_CON,0 Above is the input for this code #!/usr/bin/bash my_path=`dirname $0` T_table=$1 S_table=$2 P_table=$3 #Star new code while read ${my_path}/arch_table_list.txt { awk -F "," '{print $1}' ${my_path}/arch_table_list.txt ${S_table} awk -F "," '{print... (1 Reply)
Discussion started by: scorp_rahul23
1 Replies

5. Shell Programming and Scripting

Please explain what this code is doing

Hi, Pls explain me what the below code is doing. specially meaning if -a while calling test function- case $1 in 1) beg_dt=01; end_dt=07 ;; 2) beg_dt=08; end_dt=14 ;; 3) beg_dt=15; end_dt=21 ;; 4) beg_dt=22; end_dt=28 ;; 5) beg_dt=29; end_dt=31 ;; esac test \( `date +%w` -eq $2 -a... (3 Replies)
Discussion started by: sendtoshailesh
3 Replies

6. Programming

SET EXPLAIN ON

Hi, I'm working on INFORMIX4GL, i'm just trying to find out the missing indexes in my db. I think SET EXPLAIN ON would give me some hint on this Do anyone know how to use this? Thanks (1 Reply)
Discussion started by: dvah
1 Replies

7. Shell Programming and Scripting

Please explain what this Awk code is doing

Hi Guys, Please help me, I am new to programming and I don’t understand what some parts of this code are doing. I have comments on the parts I know, please help if my understanding of the code is not correct and also help with parts with questions. awk ' { gsub( ">",... (1 Reply)
Discussion started by: James_Owen
1 Replies

8. UNIX for Dummies Questions & Answers

awk code to process column pairs and find those with more than 1 set of possible values

Hi, I have a very wide dataset with pairs of columns starting from column 7 onwards (see example below). 0 123456 -1 0 0 -9 0 0 1 2 2 2 1 1 1 1 2 2... 0 123457 -1 0 0 -9 1 2 1 1 2 2 0 0 0 0 2 2... 0 123458 -1 0 0 -9 0 0 1 2 2 2 1 1 2 2 1 2... 0 123459 -1 0 0 -9 1 2 0 0 2 2 1 1 1 2 1 1...... (2 Replies)
Discussion started by: kasan0
2 Replies

9. Shell Programming and Scripting

awk RS/ORS error

Hello, I am trying to filter fastq file (in short, every 4 lines to be a record) based on the GC counts (GC-contents) in sequence (i.e. field 2), which is the count % of the G/C chars in the string. The example script is to pick up records with GC contents > 0.6 in the sequence (second field). ... (9 Replies)
Discussion started by: yifangt
9 Replies

10. Shell Programming and Scripting

awk : ORS not to be printed after the last record

Hello Team, here is the code: scripts]# ls /etc/init.d/ | awk 'BEGIN{ORS=" && "} /was.init/ && !/interdependentwas/ && !/NodeAgent/ && !/dmgr/{print "\$\{service_cmd\} "$0 " status"}' 2>/dev/null ${service_cmd} cmserver_was.init status && ${service_cmd} fmserver_was.init status &&... (6 Replies)
Discussion started by: chandana.hs
6 Replies
RAKE(1) 						 Ruby Programmers Reference Guide						   RAKE(1)

NAME
rake -- Ruby Make SYNOPSIS
rake [--f Rakefile] [--version] [-CGNPgnqstv] [-D [PATTERN]] [-E CODE] [-I LIBDIR] [-R RAKELIBDIR] [-T [PATTERN]] [-e CODE] [-p CODE] [-r MODULE] [--rules] [variable=value] target ... DESCRIPTION
Rake is a simple ruby(1) build program with capabilities similar to the regular make(1) command. Rake has the following features: o Rakefiles (Rake's version of Makefiles) are completely defined in standard Ruby syntax. No XML files to edit. No quirky Makefile syntax to worry about (is that a tab or a space?). o Users can specify tasks with prerequisites. o Rake supports rule patterns to synthesize implicit tasks. o Flexible FileLists that act like arrays but know about manipulating file names and paths. o A library of prepackaged tasks to make building rakefiles easier. OPTIONS
--version Display the program version. -C --classic-namespace Put Task and FileTask in the top level namespace -D [PATTERN] --describe [PATTERN] Describe the tasks (matching optional PATTERN), then exit. -E CODE --execute-continue CODE Execute some Ruby code, then continue with normal task processing. -G --no-system --nosystem Use standard project Rakefile search paths, ignore system wide rakefiles. -I LIBDIR --libdir LIBDIR Include LIBDIR in the search path for required modules. -N --no-search --nosearch Do not search parent directories for the Rakefile. -P --prereqs Display the tasks and dependencies, then exit. -R RAKELIBDIR --rakelib RAKELIBDIR --rakelibdir RAKELIBDIR Auto-import any .rake files in RAKELIBDIR. (default is rakelib ) -T [PATTERN] --tasks [PATTERN] Display the tasks (matching optional PATTERN) with descriptions, then exit. -e CODE --execute CODE Execute some Ruby code and exit. -f FILE --rakefile FILE Use FILE as the rakefile. -h --help Prints a summary of options. -g --system Using system wide (global) rakefiles (usually ~/.rake/*.rake ). -n --dry-run Do a dry run without executing actions. -p CODE --execute-print CODE Execute some Ruby code, print the result, then exit. -q --quiet Do not log messages to standard output. -r MODULE --require MODULE Require MODULE before executing rakefile. -s --silent Like --quiet, but also suppresses the 'in directory' announcement. -t --trace Turn on invoke/execute tracing, enable full backtrace. -v --verbose Log message to standard output (default). --rules Trace the rules resolution. SEE ALSO
ruby(1) make(1) http://rake.rubyforge.org/ REPORTING BUGS
Bugs, features requests and other issues can be logged at <http://onestepback.org/redmine/projects/show/rake>. You will need an account to before you can post issues. Register at <http://onestepback.org/redmine/account/register>. Or you can send an email to the author. AUTHOR
Rake is written by Jim Weirich <jim@weirichhouse.org> UNIX
November 7, 2012 UNIX
All times are GMT -4. The time now is 04:20 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy