Shell Programming and Scripting

awk -F"|" '$1=="H" {print $0}' ${filename} > ${hea_name}
awk -F"|" '$1=="D" {print $0}' ${filename} > ${det_name}
awk -F"|" '$1=="T" {print $0}' ${filename} > ${tra_name}

 
awk -F"|" '{if($1=="H") var="Hea"; else if ($1=="D") var="Det"; else var="Tra"; print $0, var}' file

awk -F"|" -v head_name="$head_name" -v det_name="$det_name" -v tra_name="$tra_name"  '
    $1=="H" {print > head_name}
    $1=="D" {print > det_name}
    $1=="T" {print > tra_name}
' ${filename}

$1=="H" {print > head_name; next}

awk -F"|" '{if($1=="H") var="Hea"; else if ($1=="D") var="Det"; else var="Tra"; print $0 > var}' file

awk -F'|' '{print > ($1=="D"?d:$1=="H"?h:t)}' d="$det_name" h="$hea_name" t="$tra_name" file

awk -F"|" -v head_name="$head_name" -v det_name="$det_name" -v tra_name="$tra_name" '
BEGIN{
	A["h"]=head_name
  	A["d"]=det_name
	A["T"]=tra_name
} 
$1 in A{
	print >A[$1]
	next
}' ${filename}

[akshay@localhost tmp]$ cat search_list
h head_name
d det_name
T tra_name
a someother_name1
b someother_name2
c someother_name3

awk '
FNR==NR{
	A[$1]=$2
	next
}
$1 in A{
	print >A[$1]
	next
}' search_list FS="|" ${filename}

awk -F'|' '{print > ($1=="D"?d:$1=="H"?h:$1=="T"?t:"/dev/null")}' d="det_name" h="hea_name" t="tra_name" file