Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Else if in awk

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Else if in awk
# 1  
Old 10-28-2015
Else if in awk
Hi All,
my input file is comma delimited.
Code:
1,Y,1111,9999
2,Y,1,9999
2,N,1,9999
2,Y,9999,9999

o/p should be
Code:
1,Y,1112,9999
2,Y,0002,9999
2,Y,0000,9999

scenario is
1.if $2 is "N" then exit.
2.if $3 is not equal to $4 then increment $3 by 1 padding to four decimal places to the left.
3.if $3 is equal to $4 then reset it zero padding with 4 zero.

my attempt for above 2 scenario is:-
awk -F, '{if ($2=='N') {exit 1} else if( $3!=$4) { $3+=1} {$3= sprintf("%04d",$3) }{print $0 } }' test
and it working

but after including scenario 3 it is giving syntatical error:-
awk -F, '{if ($2=="N") {exit} else if( $3!=$4) { $3+=1} {$3= sprintf("%04d",$3) } else if ($3=="9999") {$3="0000"} {print $0 }}' test
Kindly help me on this.
Thanks,
Last edited by looney; 10-28-2015 at 09:28 AM..
# 2  
Old 10-28-2015
Hello looney,

Could you please try following and let me know if this helps you.
Code:
awk -F, '($2=="N"){next} ($3==$4){$3=0} ($3!=$4){$3=$3+1} {printf "%d,%s,%04d,%d\n",$1,$2,$3,$4}'  Input_file

Output will be as follows.
Code:
1,Y,1112,9999
2,Y,0002,9999
2,Y,0001,9999

Off course it is according to input shown by you to us(Like input file have 4 columns only and it is , delimited), if you have more conditions please do let me know on same.


Thanks,
R. Singh
Last edited by RavinderSingh13; 10-28-2015 at 09:41 AM..
# 3  
Old 10-28-2015
scenario
1. will be met if you double quote the "N" (instead of single quoting). Pls note that line 4 will not be read/printed if script exits on line 3, and your output wouldn't match this.
2. is not met in your second snippet as the condition $3 == "9999" must also be met.
3. doesn't mention you want $3 to be four digits zero padded.
# 4  
Old 10-28-2015
Hi Ravinder
for 3rd record , 3rd field should be 0000 as in below
2,Y,0000,9999. The logic is whenever 3rd field reaches to 9999 it should be again reset to 0000
can we do it by if else condition mentioning explicitly.?
Thanks,
# 5  
Old 10-28-2015
Try
Code:
awk -F, '
                {$3=sprintf ("%04d", ($3 == $4)?0:$3+1)
                }
$2!="N"
' OFS=, file

# 6  
Old 10-28-2015
Hello looney,

Could you please try following and let me know if this helps. Let's say we have following Input_file.
Code:
cat Input_file
1,Y,1111,9999
2,Y,1,9999
2,N,1,9999
2,Y,9999,9999
2,Y,9999,0002
3,N,2343,0002
4,Y,1203,1203

Then following is the code for same.
Code:
awk -F, '($2=="N"){next} ($3==$4 || $3==9999){$3=0} ($3!=$4){$3=$3+1} {printf "%d,%s,%04d,%04d\n",$1,$2,$3,$4}'   Input_file

Output will be as follows.
Code:
1,Y,1112,9999
2,Y,0002,9999
2,Y,0001,9999
2,Y,0001,0002
4,Y,0001,1203

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
looney
# 7  
Old 10-28-2015
For the wrap around at 9999, try
Code:
awk -F, '
                {$3=sprintf ("%04d", ($3 == $4)?0:($3+1)%1E4)
                }
$2!="N"
' OFS=, file

This User Gave Thanks to RudiC For This Post:
looney
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk output yields error: awk:can't open job_name (Autosys)

Good evening, Im newbie at unix specially with awk From an scheduler program called Autosys i want to extract some data reading an inputfile that comprises jobs names, then formating the output to columns for example 1. This is the inputfile: $ more MapaRep.txt ds_extra_nikira_usuarios... (18 Replies)
Discussion started by: alexcol
18 Replies

2. Shell Programming and Scripting

Pass awk field to a command line executed within awk

Hi, I am trying to pass awk field to a command line executed within awk (need to convert a timestamp into formatted date). All my attempts failed this far. Here's an example. It works fine with timestamp hard-codded into the command echo "1381653229 something" |awk 'BEGIN{cmd="date -d... (4 Replies)
Discussion started by: tuxer
4 Replies

3. Shell Programming and Scripting

Passing awk variable argument to a script which is being called inside awk

consider the script below sh /opt/hqe/hqapi1-client-5.0.0/bin/hqapi.sh alert list --host=localhost --port=7443 --user=hqadmin --password=hqadmin --secure=true >/tmp/alerts.xml awk -F'' '{for(i=1;i<=NF;i++){ if($i=="Alert id") { if(id!="") if(dt!=""){ cmd="sh someScript.sh... (2 Replies)
Discussion started by: vivek d r
2 Replies

4. Shell Programming and Scripting

HELP with AWK one-liner. Need to employ an If condition inside AWK to check for array variable ?

Hello experts, I'm stuck with this script for three days now. Here's what i need. I need to split a large delimited (,) file into 2 files based on the value present in the last field. Samp: Something.csv bca,adc,asdf,123,12C bca,adc,asdf,123,13C def,adc,asdf,123,12A I need this split... (6 Replies)
Discussion started by: shell_boy23
6 Replies

5. Shell Programming and Scripting

awk command to compare a file with set of files in a directory using 'awk'

Hi, I have a situation to compare one file, say file1.txt with a set of files in directory.The directory contains more than 100 files. To be more precise, the requirement is to compare the first field of file1.txt with the first field in all the files in the directory.The files in the... (10 Replies)
Discussion started by: anandek
10 Replies

6. Shell Programming and Scripting

Comparison and editing of files using awk.(And also a possible bug in awk for loop?)

I have two files which I would like to compare and then manipulate in a way. File1: pictures.txt 1.1 1.3 dance.txt 1.2 1.4 treehouse.txt 1.3 1.5 File2: pictures.txt 1.5 ref2313 1.4 ref2345 1.3 ref5432 1.2 ref4244 dance.txt 1.6 ref2342 1.5 ref2352 1.4 ref0695 1.3 ref5738 1.2... (1 Reply)
Discussion started by: linuxkid
1 Replies

7. Shell Programming and Scripting

Problem with awk awk: program limit exceeded: sprintf buffer size=1020

Hi I have many problems with a script. I have a script that formats a text file but always prints the same error when i try to execute it The code is that: { if (NF==17){ print $0 }else{ fields=NF; all=$0; while... (2 Replies)
Discussion started by: fate
2 Replies

8. Shell Programming and Scripting

awk: assign variable with -v didn't work in awk filter

I want to filter 2nd column = 2 using awk $ cat t 1 2 2 4 $ VAR=2 #variable worked in print $ cat t | awk -v ID=$VAR ' { print ID}' 2 2 # but variable didn't work in awk filter $ cat t | awk -v ID=$VAR '$2~/ID/ { print $0}' (2 Replies)
Discussion started by: honglus
2 Replies

9. Shell Programming and Scripting

scripting/awk help : awk sum output is not comming in regular format. Pls advise.

Hi Experts, I am adding a column of numbers with awk , however not getting correct output: # awk '{sum+=$1} END {print sum}' datafile 2.15291e+06 How can I getthe output like : 2152910 Thank you.. # awk '{sum+=$1} END {print sum}' datafile 2.15079e+06 (3 Replies)
Discussion started by: rveri
3 Replies

10. Shell Programming and Scripting

Awk problem: How to express the single quote(') by using awk print function

Actually I got a list of file end with *.txt I want to use the same command apply to all the *.txt Thus I try to find out the fastest way to write those same command in a script and then want to let them run automatics. For example: I got the file below: file1.txt file2.txt file3.txt... (4 Replies)
Discussion started by: patrick87
4 Replies
Login or Register to Ask a Question