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awk match help

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# 1  
Old 07-27-2015
awk match help
Trying to match $1 of file2.txt with $1 of file 1.txt and output the entire line of the match. Thank you Smilie
Code:
 awk 'NR==FNR{A[$1]=$2; next}  A[$2]  {$2=$2 " " A[$2]}1' file1.txt file2.txt > output.txt

file1.txt
Code:
LMNA    285.195652
MZT1P1    166.852113
HFM1    129.847940

file2.txt
Code:
LMNA
PTPN11
GUSB
HFM1

Desired output
Code:
LMNA    285.195652
HFM1    129.847940

Last edited by Scrutinizer; 07-27-2015 at 06:24 PM.. Reason: cleaned out some stuff
# 2  
Old 07-27-2015
Code:
grep -f file2 file1

This User Gave Thanks to RudiC For This Post:
cmccabe
# 3  
Old 07-27-2015
Code:
awk 'NR==FNR{A[$1];next}$1 in A' file2.txt file1.txt

This User Gave Thanks to Yoda For This Post:
cmccabe
# 4  
Old 07-27-2015
bash / ksh93 / zsh on most systems:
Code:
join <(sort file1) <(sort file2)

This User Gave Thanks to Scrutinizer For This Post:
cmccabe
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