awk question


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting awk question
# 1  
Old 05-09-2013
awk question

Please help me with this ...

Input file

Code:
N_DC_Fabric_A,AU_SAP01,c050760169900000(*),50060169472007fc(*),50060160472007fc(*),
N_DC_Fabric_A,AU_SAP02,c050760169900004,50060169472007fc(*),50060160472007fc(*),
N_DC_Fabric_A,AU_SAP03,c050760169900004,50060169472007fc,50060160472007fc,


Output needed
Code:
N_DC_Fabric_A,AU_SAP01,c050760169900000(*),50060169472007fc(*),50060160472007fc(*),CONNECTED
N_DC_Fabric_A,AU_SAP02,c050760169900004,50060169472007fc(*),50060160472007fc(*),PARTIAL
N_DC_Fabric_A,AU_SAP03,c050760169900004,50060169472007fc,50060160472007fc,OFFLINE

Basically if (*) = NF-2 add CONNECTED as last column
if (*) < NF-2 add PARTIAL as last column
if no (*) at all , then add OFFLINE

where NF = number of fields

Thanks
# 2  
Old 05-10-2013
Code:
awk -F, '
        {
                for ( i = NF; i >= 3; i-- )
                {
                        if ( $i ~ /\(\*\)/ )
                                ++c
                }
                if ( c == 3 )
                        $NF = "CONNECTED"
                if ( c >= 1 )
                        $NF = "PARTIAL"
                if ( c == 0 )
                        $NF = "OFFLINE"
                c = 0
        }
        1
' OFS=, file

# 3  
Old 05-10-2013
Thanks for the quick response ... but i am getting this

N_DC_Fabric_A,AU_SAP01,c050760169900000(*),50060169472007fc(*),50060160472007fc(*),PARTIAL
N_DC_Fabric_A,AU_SAP02,c050760169900004,50060169472007fc(*),50060160472007fc(*),PARTIAL
N_DC_Fabric_A,AU_SAP03,c050760169900004,50060169472007fc,50060160472007fc,OFFLINE

The first line should be CONNECTED
# 4  
Old 05-10-2013
Sorry, my bad!

Correction:
Code:
awk -F, '
        {
                for ( i = NF; i >= 3; i-- )
                {
                        if ( $i ~ /\(\*\)/ )
                                ++c
                }
                if ( c == 3 )
                        $NF = "CONNECTED"
                if ( c >= 1  && c < 3 )
                        $NF = "PARTIAL"
                if ( c == 0 )
                        $NF = "OFFLINE"
                c = 0
        }
        1
' OFS=, file

This User Gave Thanks to Yoda For This Post:
# 5  
Old 05-10-2013
thanks again .... this works fine ,,for the above example ... but in my orignal file Number of fields are not fixed .... they vary .. i need the following logic to work

f (*) = NF-2 add CONNECTED as last column
if (*) < NF-2 add PARTIAL as last column
if no (*) at all , then add OFFLINE

where NF = number of fields

another example
Code:
N_DC_Fabric_A,AU_SAP01,c050760169900000(*),50060169472007fc(*),50060160472007fc(*),PARTIAL
N_DC_Fabric_A,AU_SAP02,c050760169900004,50060169472007fc(*),50060160472007fc(*),PARTIAL
N_DC_Fabric_A,AU_SAP03,c050760169900004,50060169472007fc,50060160472007fc,OFFLINE
N_DC_Fabric_A,AU_SAP011,c050760169900000(*),50060169472007fc(*),CONNECTED

# 6  
Old 05-10-2013
Here's how to do it in general:
Code:
$ cat test.awk
BEGIN { FS=OFS="," }
{n=0; for (i=1;i<=NF;i++) {($i ~ /(*)/) && n++}}
{ print "Fields: " NF, " Matches: " n}
n == 0    {$NF="OFFLINE"}
n <  NF-3 {$NF="PARTIAL"}
n == NF-3 {$NF="CONNECTED"}
n  > NF-3 {$NF="ERROR"}
{print}

I've included a diagnostic line { print "Fields: " NF, "Matches: " n} to help point out what I think is a problem with the specification, see below. You can comment out the diagnostic line with # comment character.

I also included an ERROR line n > NF-3 {$NF="ERROR"} just in case that condition ever occurs. You could also have it print an error message there and exit. If the error condition is impossible, you can delete that line.

Anyway, back to the problem with the specification, assume the input file is the following, as you just posted:
Code:
$ cat input
N_DC_Fabric_A,AU_SAP01,c050760169900000(*),50060169472007fc(*),50060160472007fc(*),
N_DC_Fabric_A,AU_SAP02,c050760169900004,50060169472007fc(*),50060160472007fc(*),
N_DC_Fabric_A,AU_SAP03,c050760169900004,50060169472007fc,50060160472007fc,
N_DC_Fabric_A,AU_SAP011,c050760169900000(*),50060169472007fc(*),

When we run the awk script, here is what it produces, along with the diagnostic messages:
Code:
$ awk -f test.awk input
Fields: 6, Matches: 3
N_DC_Fabric_A,AU_SAP01,c050760169900000(*),50060169472007fc(*),50060160472007fc(*),CONNECTED
Fields: 6, Matches: 2
N_DC_Fabric_A,AU_SAP02,c050760169900004,50060169472007fc(*),50060160472007fc(*),PARTIAL
Fields: 6, Matches: 0
N_DC_Fabric_A,AU_SAP03,c050760169900004,50060169472007fc,50060160472007fc,PARTIAL
Fields: 5, Matches: 2
N_DC_Fabric_A,AU_SAP011,c050760169900000(*),50060169472007fc(*),CONNECTED

The last record is CONNECTED. It has 5 fields (2 matches). awk counts the end of the line after the last comma as a field. I think maybe you were counting that last record as having 4 fields. So I would suggest the condition for CONNECTED is NF-3 instead of NF-2. I hope that makes sense.

The first record is also CONNECTED, I think, NOT PARTIAL as you had in the last post. The line has 6 fields (3 matches).

In any case, the first and last record should be both be the same (either CONNECTED or PARTIAL) I think, because the last record has one more field, and has one more match, so both sides of the matches == NF - N equation increase.

One more thing. If some of the lines do not end with a comma, the awk script will not work correctly. If there is any question, to be safe, you could always run sed -e "s/ *$//" -e "s/[^,]$/&,/" on the file first.
This User Gave Thanks to hanson44 For This Post:
# 7  
Old 05-10-2013
Another way to count without looping
Code:
awk '{f=gsub(",", "");m=gsub("\*", "")} {print "Fields",f", Match",m}' input
or
awk '{print "Fields",gsub(",", "")", Match",gsub("\*", "")}' input

Fields 5, Match 3
Fields 5, Match 2
Fields 5, Match 0
Fields 4, Match 2

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

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk question : system output to awk variable.

Hi Experts, I am trying to get system output to capture inside awk , but not working: Please advise if this is possible : I am trying something like this but not working, the output is coming wrong: echo "" | awk '{d=system ("date") ; print "Current date is:" , d }' Thanks, (5 Replies)
Discussion started by: rveri
5 Replies

2. Homework & Coursework Questions

awk question.

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: im using ls -l | xargs | awk '{what ever files here}' im trying to get something that looks like this... (7 Replies)
Discussion started by: rontopia
7 Replies

3. UNIX for Dummies Questions & Answers

Basic awk question...getting awk to act on $1 of the command itself

I have a script problem that I am not able to solve due my very limited understanding of unix/awk. This is the contents of test.sh awk '{print $1}' From the prompt if I enter: ./test.sh Hello World I would expect to see "Hello" but all I get is a blank line. Only then if I enter "Hello... (2 Replies)
Discussion started by: JasonHamm
2 Replies

4. UNIX for Dummies Questions & Answers

awk question

Can anyone help with this this one liner: nawk -v RS='' '$1=$1' InputFile What I have in the file: 0.0013985457223116 -0.0002338180925628 0.0 0.0003709430584958 -0.0005763523138347 0.0 And the output I want: 0.0013985457223116 -0.0002338180925628 0.0 0.0003709430584958... (1 Reply)
Discussion started by: mookie123
1 Replies

5. UNIX for Dummies Questions & Answers

awk question

Hi, in the following script, what does " a=$0} END " mean ? do we need that ? Thanks awk '{a=$0} END {for (i=NR; i>=1; i--) print a}' file (3 Replies)
Discussion started by: james94538
3 Replies

6. Shell Programming and Scripting

Awk Question

How I can rid of the following presentation du -sk /u*/oradata/TEST/*.dbf |awk '{print total+=$1} 1.28003e+06 4.35109e+06 4.36134e+06 4.4535e+06 5.47752e+06 5.48777e+06 7.52554e+06 7.73036e+06 9.06158e+06 :confused: thank you (3 Replies)
Discussion started by: zam
3 Replies

7. Shell Programming and Scripting

awk question

I am trying to read through a file, gather the states in that file and change it from an abbreviation to the ful text. Can anyone provide some assistance. Thanks!! (4 Replies)
Discussion started by: cnitadesigner
4 Replies

8. Shell Programming and Scripting

awk .. question?

i have a little awk script that I use looks this: awk '{if (FNR==1){print FILENAME; print $0}else print $0}' file1...file2....fi... > bundled. i have completely forgotten how to unbundle this. I have tried several different approaches and still can not remember how to unbundle the file bundled.... (2 Replies)
Discussion started by: moxxx68
2 Replies

9. Shell Programming and Scripting

One more awk question!

Hello, I have the following command that does 2 searches. awk '{if ($0 ~ /STRING1/) {c++} }{if ( c == 2 ) {sub(/STRING1/,"NEWSTRING") } } { print }' FILE How do I search up after the first search? thanks (4 Replies)
Discussion started by: ctcuser
4 Replies

10. Shell Programming and Scripting

awk question

I have the following error: ls -lt | awk 'BEGIN NR > 1 { print $2, $9 }' Syntax Error The source line is 1. The error context is BEGIN >>> NR <<< > 1 { print $2, $9 } awk: 0602-500 Quitting The source line is 1. What I want to do is ls a directory, skip the first... (3 Replies)
Discussion started by: lesstjm
3 Replies
Login or Register to Ask a Question