# Array Help **URL:** \ **Category:** Shell Programming and Scripting\ **Created:** [May 14, 2013, 3:44am UTC](https://community.unix.com/t/array-help/328499 "2013-05-14T03:44:03Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![ragu.selvaraj](https://community.unix.com/letter_avatar/ragu.selvaraj/32/6_22734026db12803ebb3e059622ac3534.png) [@ragu.selvaraj](https://community.unix.com/u/ragu.selvaraj)\ **Post date:** [May 14, 2013, 3:44am UTC](https://community.unix.com/t/array-help/328499/1 "2013-05-14T03:44:03Z")
Hi Am having 2 files 1st file having 1 2 3 4 5 6 7 8 9 2nd file 1 2 b 3 c i want to check eache character in 2nd file is present or not need to check whether 1 is present in 1st file rec=`cat 2nd file` for i in $rec if [ $i = 1st file (how to check using array concept? ---
**Author:** ![vidyadhar85](https://community.unix.com/user_avatar/community.unix.com/vidyadhar85/32/997_2.png) [@vidyadhar85](https://community.unix.com/u/vidyadhar85)\ **Post date:** [May 14, 2013, 3:58am UTC](https://community.unix.com/t/array-help/328499/2 "2013-05-14T03:58:22Z")
So your 1st file has only 1 row? if yes.. ```nohighlight awk 'NR==FNR{v=$0;next} v ~ $0{print $0"exists in 1st file"}' 1stfile 2ndfile ``` ---
**Author:** ![ragu.selvaraj](https://community.unix.com/letter_avatar/ragu.selvaraj/32/6_22734026db12803ebb3e059622ac3534.png) [@ragu.selvaraj](https://community.unix.com/u/ragu.selvaraj)\ **Post date:** [May 14, 2013, 4:01am UTC](https://community.unix.com/t/array-help/328499/3 "2013-05-14T04:01:02Z")
i want to print he character which is not present in the 1st file ---
**Author:** ![vidyadhar85](https://community.unix.com/user_avatar/community.unix.com/vidyadhar85/32/997_2.png) [@vidyadhar85](https://community.unix.com/u/vidyadhar85)\ **Post date:** [May 14, 2013, 4:04am UTC](https://community.unix.com/t/array-help/328499/4 "2013-05-14T04:04:58Z")
change it as below.. ```nohighlight awk 'NR==FNR{v=$0;next} v !~ $0{print $0"exists in 1st file"}' 1stfile 2ndfile ``` ---
**Author:** ![Jotne](https://community.unix.com/user_avatar/community.unix.com/jotne/32/2148_2.png) [@Jotne](https://community.unix.com/u/Jotne)\ **Post date:** [May 14, 2013, 4:09am UTC](https://community.unix.com/t/array-help/328499/5 "2013-05-14T04:09:40Z")
A small correction 🙂 ```nohighlight awk 'NR==FNR{v=$0;next} v !~ $0{print $0,"exists not in 1st file"}' 1stfile 2ndfile ``` ```nohighlight b exists not in 1st file c exists not in 1st file ``` ---
**Author:** ![ragu.selvaraj](https://community.unix.com/letter_avatar/ragu.selvaraj/32/6_22734026db12803ebb3e059622ac3534.png) [@ragu.selvaraj](https://community.unix.com/u/ragu.selvaraj)\ **Post date:** [May 14, 2013, 6:55am UTC](https://community.unix.com/t/array-help/328499/6 "2013-05-14T06:55:48Z")
hi jote thank you i want to execute in loop i need the condition like if a in (2nd file a b c d.....) then echo string is correct else echo string in not in 2nd file fi ---
**Author:** ![vidyadhar85](https://community.unix.com/user_avatar/community.unix.com/vidyadhar85/32/997_2.png) [@vidyadhar85](https://community.unix.com/u/vidyadhar85)\ **Post date:** [May 14, 2013, 6:58am UTC](https://community.unix.com/t/array-help/328499/7 "2013-05-14T06:58:20Z")
Is there any specific reason for loop? I guess awk fits the purpose (as per your details). Are we missing anything here? ---
**Author:** ![ragu.selvaraj](https://community.unix.com/letter_avatar/ragu.selvaraj/32/6_22734026db12803ebb3e059622ac3534.png) [@ragu.selvaraj](https://community.unix.com/u/ragu.selvaraj)\ **Post date:** [May 14, 2013, 7:33am UTC](https://community.unix.com/t/array-help/328499/8 "2013-05-14T07:33:10Z")
yes am writing a script to identify whether the string is present or not for example consider a record abcd,1234,xyz i need to validate whether the first column delimeter as , abc is present in the array (a b c d e f) if it is present then no issue else i need to print tha string ---------- Post updated at 06:33 AM ---------- Previous update was at 06:05 AM ---------- yes i need to find the character which is nt present there will be many records ---
**Author:** ![Corona688](https://community.unix.com/letter_avatar/corona688/32/6_22734026db12803ebb3e059622ac3534.png) [@Corona688](https://community.unix.com/u/Corona688)\ **Post date:** [May 14, 2013, 12:39pm UTC](https://community.unix.com/t/array-help/328499/9 "2013-05-14T12:39:19Z")
The delimiter , will never be present in the array (a b c d e f). I'm not sure what you were expecting.