Replacing first field of file2 with the second filed of file1 for matching cases


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# 1  
Replacing first field of file2 with the second filed of file1 for matching cases

Dear All,

Need your help..Smilie

I am not regular on shell scripts..Smilie

I have 2 files..


Content of file1

Code:
cellRef 4};"4038_2_MTNL_KALAMBOLI"
 cellRef 1020};"4112_3_RAINBOW_BLDG"
 cellRef 134};"4049_2_TATA_HOSPITAL"
 cellRef 1003};"4242_3_HITESH_CONSTRUCTION"
 cellRef 744};"5035_2_SHAHI_NOORANI_MASJID"
 cellRef 622};"4614_3_SHYAM_NIVAS_DCS"
 cellRef 1080};"4303_1_LODHA_HEAVEN"
 cellRef 394};"4502_1_NAVKANTLAL"
 cellRef 1884};"4323_2_COMMERCE_CENTER"
 cellRef 888};"4260_1_BOLENATH_DAIRY"
 cellRef 945};"4240_1_SHARIFA_MANZIL"
 cellRef 922};"4231_2_NASHEMAN"
 cellRef 812};"4235_2_SAIDAVILA"
 cellRef 1068};"4613_1_BALRAM_SADAN"
 cellRef 75};"4050_1_MTNL_TALOJE"
 cellRef 250};"4170_3_SANDEEP_APT"
 cellRef 2530};"4015_3_DRONAGIRI"
 cellRef 2355};"4245_3_SAI_PRASAD_KOPRA"
 cellRef 1661};"4210_1_AFZAL_COMPOUND"
 cellRef 765};"4116_3_MARUTI_TOWER"
 cellRef 2415};"4401_2_KALYAN_RAIL_SDCS"
 cellRef 983};"4237_1_AMAL_APARTMENT"
 cellRef 580};"4344_1_CHAMUNDA_DARSHAN"
 cellRef 2437};"4600_1_YOGESHWAR_CHS"
 cellRef 2475};"4136_2_MTNL_APMC"

Content of file2


Code:
cellRef 2530};disabled;main;0;"Trx4";
 cellRef 2530};disabled;main;0;"Trx2";
 cellRef 2355};disabled;main;12;"Trx3";outer
 cellRef 765};disabled;main;11;"Trx2";
 cellRef 580};disabled;secondary;0;"Trx5";inner
 cellRef 580};disabled;secondary;0;"Trx6";inner
 cellRef 2437};disabled;main;-1;"Trx1";
 cellRef 2437};disabled;main;-1;"Trx3";
 cellRef 2437};disabled;main;-1;"Trx2";
 cellRef 2437};disabled;main;-1;"Trx4";
 cellRef 2475};disabled;main;6;"Trx3";outer
 cellRef 2305};disabled;main;6;"Trx2";
 cellRef 2368};disabled;main;0;"Trx4";outer
 cellRef 2368};disabled;secondary;0;"Trx5";inner
 cellRef 2368};disabled;secondary;0;"Trx6";inner
 cellRef 956};disabled;secondary;4;"Trx5";inner
 cellRef 956};disabled;secondary;3;"Trx6";inner
 cellRef 932};disabled;secondary;6;"Trx5";inner
 cellRef 932};disabled;secondary;5;"Trx6";inner
 cellRef 864};disabled;secondary;4;"Trx5";inner

Both the files are semicolon separated..

First fields of both the files are common..

I want a script which will replace first field of file2 with the second field of file1 when first field of both the files matches..
# 2  
You could try something like:
Code:
awk '
BEGIN {	FS = OFS = ";"
}
FNR == NR {
	x[$1] = $2
	next
}
$1 in x {
	$2 = x[$1]
}
1' file[12]

which (with your sample files) produces the output:
Code:
cellRef 2530};disabled;main;0;"Trx4";
 cellRef 2530};"4015_3_DRONAGIRI";main;0;"Trx2";
 cellRef 2355};"4245_3_SAI_PRASAD_KOPRA";main;12;"Trx3";outer
 cellRef 765};"4116_3_MARUTI_TOWER";main;11;"Trx2";
 cellRef 580};"4344_1_CHAMUNDA_DARSHAN";secondary;0;"Trx5";inner
 cellRef 580};"4344_1_CHAMUNDA_DARSHAN";secondary;0;"Trx6";inner
 cellRef 2437};"4600_1_YOGESHWAR_CHS";main;-1;"Trx1";
 cellRef 2437};"4600_1_YOGESHWAR_CHS";main;-1;"Trx3";
 cellRef 2437};"4600_1_YOGESHWAR_CHS";main;-1;"Trx2";
 cellRef 2437};"4600_1_YOGESHWAR_CHS";main;-1;"Trx4";
 cellRef 2475};"4136_2_MTNL_APMC";main;6;"Trx3";outer
 cellRef 2305};disabled;main;6;"Trx2";
 cellRef 2368};disabled;main;0;"Trx4";outer
 cellRef 2368};disabled;secondary;0;"Trx5";inner
 cellRef 2368};disabled;secondary;0;"Trx6";inner
 cellRef 956};disabled;secondary;4;"Trx5";inner
 cellRef 956};disabled;secondary;3;"Trx6";inner
 cellRef 932};disabled;secondary;6;"Trx5";inner
 cellRef 932};disabled;secondary;5;"Trx6";inner
 cellRef 864};disabled;secondary;4;"Trx5";inner

Note that no change is made to the first line because there is a big difference between:
Code:
cellRef<space>2530}
        and
<space>cellRef<space>2530}

If you want to try this on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk, /usr/xpg6/bin/awk, or nawk.
This User Gave Thanks to Don Cragun For This Post:
# 3  
No success.. Smilie

With /usr/xpg6/bin/awk:
Code:
input file "file[12]"

With /usr/xpg6/bin/awk
Code:
line 11: /usr/xpg6/bin/awk: No such file or directory

With nawk
Code:
nawk: can't open file file[12]
 source line number 2

With awk

Code:
awk: syntax error near line 8
awk: bailing out near line 8

---------- Post updated at 02:58 PM ---------- Previous update was at 02:56 PM ----------

Code:
uname -a
SunOS omcmfnt1 5.10 Generic_142900-08 sun4u sparc SUNW,Sun-Fire-V490

# 4  
You said you had two files named file1 and file2. The error messages you're seeing tell us that file1 and file2 are not present.

Did you change the names of your files? Did you decide to run this script in a directory other than the directory that contains your data files?
# 5  
Don't use double quotes around the filenames (i.e. file[12]) as they need to be expanded by the shell. Assuming a typo in your samples' first lines, I'd suggest "replacing field 1 in file 2 with field 2 in file 1 if both files' field 1 match":
Code:
awk -F";" 'FNR==NR{T[$1]=$2; next} $1 in T {$1=T[$1]} 1' OFS=";" file[12]
"4015_3_DRONAGIRI";disabled;main;0;"Trx4";
"4015_3_DRONAGIRI";disabled;main;0;"Trx2";
"4245_3_SAI_PRASAD_KOPRA";disabled;main;12;"Trx3";outer
"4116_3_MARUTI_TOWER";disabled;main;11;"Trx2";
"4344_1_CHAMUNDA_DARSHAN";disabled;secondary;0;"Trx5";inner
"4344_1_CHAMUNDA_DARSHAN";disabled;secondary;0;"Trx6";inner
"4600_1_YOGESHWAR_CHS";disabled;main;-1;"Trx1";
"4600_1_YOGESHWAR_CHS";disabled;main;-1;"Trx3";
"4600_1_YOGESHWAR_CHS";disabled;main;-1;"Trx2";
"4600_1_YOGESHWAR_CHS";disabled;main;-1;"Trx4";
"4136_2_MTNL_APMC";disabled;main;6;"Trx3";outer
 cellRef 2305};disabled;main;6;"Trx2";
 cellRef 2368};disabled;main;0;"Trx4";outer
 cellRef 2368};disabled;secondary;0;"Trx5";inner
 cellRef 2368};disabled;secondary;0;"Trx6";inner
 cellRef 956};disabled;secondary;4;"Trx5";inner
 cellRef 956};disabled;secondary;3;"Trx6";inner
 cellRef 932};disabled;secondary;6;"Trx5";inner
 cellRef 932};disabled;secondary;5;"Trx6";inner
 cellRef 864};disabled;secondary;4;"Trx5";inner

These 2 Users Gave Thanks to RudiC For This Post:
# 6  
Thanks Don, RudiC.. Both worked well..SmilieSmilieSmilie


I have fixed the mistakes I was making at my end related to file names..Smilie
# 7  
I misread what you were trying to do. To get the output you wanted using my suggestion, you'd need to change the line:
Code:
	$2 = x[$1]

to:
Code:
	$1 = x[$1]

In the future, please show us a sample of the output you're trying to produce as well as samples of your input files.
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