awk split field format

awk '{spl开发者_JAVA技巧it($2,a,"-")};
     {if ($1=="aa") {print "'$var'/"$1"/"a[1]"/"$2" '$var'/bb/"a[1]} 
      else {print "'$var'/"$1"/"a[1]"/"$2" '$var'/aa/"a[1]}}'

hi, $2 is all lower case text. I have split it and would like to output a[1] in upper case.

How can I do this ?

Tom

you can use awk's toupper(a[1])

You can avoid complex and hard to read quoting if you use AWK's variable passing. You can also make use of the Output Field Separator. Also, you have extra curly braces that you don't need.

awk -v "var=$var" 'BEGIN{OFS="/"}
  {split($2,a,"-"); a[1]=toupper(a[1])
  if ($1=="aa") {print var, $1, a[1], $2 " " var, "bb", a[1]} 
    else {print var, $1, a[1], $2 " " var, "aa", a[1]}}'