Login or Register to Ask a Question and Join Our Community


AIX

Help with syntax using AWK

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Operating Systems AIX Help with syntax using AWK
# 1  
Old 09-16-2010
Help with syntax using AWK
I have a file which is comma separated and has quotes. I can use this command and
Code:
awk -F"," '{ if ($4=="01" print $0 }' test.txt

But this doesn't fetch me the data.since it has quotes.
If the data has no quotes,the above command works fine.
In Unix you can skip quote \" but this doesn't work.
If I use this command awk -F"," '{ print $4 }' PropEnrollmentADD.txt
It gives all value in 4th tab.
but I have to check the values in 4th column ex: $="01",$4="02",$4='03' and ..........so on.
I tried even this
Code:
 awk -F"," ' { if (substr($4,2,2))= "01" printf $0; }'

This throws me an error
Code:
syntax error The source line is 1.
 The error context is
                 { if >>>  substr <<< ($4,2,2)== "01" printf $0; }
 awk: The statement cannot be correctly parsed.
 The source line is 1.

please help.
Last edited by Scott; 09-16-2010 at 05:18 PM.. Reason: Please use code tags
# 2  
Old 09-16-2010
Please post an example of your test file.
# 3  
Old 09-16-2010
The data in my test file looks like this example below

Code:
"abcd","1234","001245","01","956769","","",""
"abcd","1234","001245","02","956769","",""
"abcd","1234","001245","03","956769","N","",""
"abcd","1234","001245","04","956769","N","","","","","","","","",""
"abcd","1234","001245","10","956769","","","",""
"abcd","1234","001245","11","956769","000","0","","",""
"abcd","1234","001245","12","956769","N","",""

Last edited by Scott; 09-16-2010 at 05:18 PM.. Reason: Please use code tags
# 4  
Old 09-16-2010
Code:
 awk -F"," 'substr($4,2,2) == "01"'

OR
Code:
awk -F"[,\"]" ' $4 == "01" '

Last edited by john1212; 09-16-2010 at 08:18 PM.. Reason: thank you scottn
# 5  
Old 09-16-2010
Code:
awk -F"," ' { if (substr($4,2,2))= "01" printf $0 }'  test.txt

It still gives me the error
Code:
 The error context is
                 { if >>>  (substr($4,2,2))= <<<  "01" printf $0 }
 awk: The statement cannot be correctly parsed.
 The source line is 1.

I tried this as well
Code:
awk -F"[,"]" '{ if $4 == "01" print $0; }' test.txt

Then I get >

I guess it is expecting me to pass some thing.
I am new to awk.
Please advice
Last edited by Scott; 09-16-2010 at 07:59 PM.. Reason: Code tags, please...
# 6  
Old 09-16-2010
Code:
awk -F"[,\"]" '{ if ($4 == "01") print $0; }'

You need to escape the " in the -F option, and also add brackets around the if statement.

Shorthand for this statement would be:

Code:
awk -F"[,\"]" '$4 == "01"'

# 7  
Old 09-16-2010
This snippet handles both a quoted 4th field and an unquoted 4th field
as long as the 4th field is always two characters long:

Code:
 
awk -F','   \
    ' { if ( substr($7,2,2) == "01" || $4 == "01" ) { print $0; } }' test.txt

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

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Awk: syntax error

awk -F, ' NR>1 { BEGIN{ chr=$2 } END{ for (k in chr) {print k} } } ' $gene_file I've a really simple code. I want to store gene name and it's chromosome and in the end print them. I'm skipping line one as it contains headers. But I don't know why I get error as: (2 Replies)
Discussion started by: genome
2 Replies

2. Shell Programming and Scripting

Help with the awk syntax

Hello Experts: While writing a script to help one of the posts on here, I end up writing a wrong one. I am very much eager to know how this can be corrected. Aim was to not print specified columns - lets say out of 100 fields, need to print all but 5th, 10th, 15th columns. Someone already... (13 Replies)
Discussion started by: juzz4fun
13 Replies

3. Shell Programming and Scripting

Syntax Problem with awk

Hello, I have perl script,which take some part of data in the file. the below command works fine in normal cmd prompt. `awk '/CDI/ && // && !/Result for/ {print $3 $5 > "final.txt"}' datalist.txt`; `nawk -F"" '{print $2}' finalcdi.txt`; But not working. Please use code tags, thanks. (5 Replies)
Discussion started by: rasingraj
5 Replies

4. Shell Programming and Scripting

AWK Function syntax

Hi, I would like to know what is the correct syntax to perform a function in awk. Although I have seen several examples, not get it to work, this is what I'm trying: #!/bin/bash awk function multi (number) { return number * 3 } print multi (4)Thanks (2 Replies)
Discussion started by: Godie
2 Replies

5. Shell Programming and Scripting

awk syntax

Hi I have a bash file which will split a big file to many small files. But I got a syntax error.H="$(head -1 CCC.tped)" awk 'print $0 > $1 ".tped"' CCC.tped for f in $(ls *.tped); do echo "$H\n" "$(cat $f)" >$f; done And -bash-4.1$ bash split awk: print $0 > $1".tped" awk: ^ syntax error... (3 Replies)
Discussion started by: zhshqzyc
3 Replies

6. Shell Programming and Scripting

AWK syntax help

i have a ksh code that needs to be written in AWK. can someone please help me here? :( if }" | grep -c "$2") -gt 0 ] ; then print - "found $2 in array ignore" else print - "did not find $2 in array ignore" fi ignore=4ty56r ignore=er45ty . . . ignore=frhtg2 (27 Replies)
Discussion started by: usustarr
27 Replies

7. UNIX for Dummies Questions & Answers

awk syntax

Little bit confusing while using awk :confused::confused: In Sed while pattern search we can use "(double quotes) i mean $a=hello $cat file.txt |sed -n "/$a/p"this thing work fine But if i use it in awk it's not working How could i do the substitution of pattern by a variables and the... (1 Reply)
Discussion started by: posix
1 Replies

8. Shell Programming and Scripting

AWK syntax

Hi I am trying to understand AWK syntax so I tried this command which gives me the home directory of root awk 'BEGIN { FS = ":"} {if ($1 == "root") print $6 }' /etc/passwd I would know what are the following commands doing. The first one prints all /etc/passwd, second prints nothing. ... (4 Replies)
Discussion started by: wakatana
4 Replies

9. Shell Programming and Scripting

awk syntax help

I don't get correct output when I run this command line: nmap -sP failedhost.com | grep -i failed | awk -F '{print $6}' I basically want it to return 'failedhost.com' but its just showing the output of the nmap scan. (8 Replies)
Discussion started by: streetfighter2
8 Replies

10. Shell Programming and Scripting

Help with Awk Syntax

I have written many awk commands which go in multiple lines. I have this confusion many times. Some time they work if i dont terminate them with "\" but some time error. Some time in "if" statements between if and else if i dont use ";" it gives error but sometimes it doesnt. The below... (4 Replies)
Discussion started by: pinnacle
4 Replies
Login or Register to Ask a Question