Shell Programming and Scripting

-k val1n -k val2n -k val3n

set str = "/5/6/7"
-k 5n -k 6n -k 7n

 set str = "/7/8/9/23"
-k 7n -k 8n -k 9n -k 23n

~/unix.com$ echo '/7/8/9/23' | awk -F\/ '{i=1;while(i++<NF)s=s"-k "$i"n "}END{print s}'

echo "/5/6/7" | awk -F "/" '{for (i=1;i<=NF;i++){if (i==1){continue}printf " -k " $i "n"}}'

echo "/5/6/7" | awk -F "/" '{for (i=1;i<=NF;i++){if (i==1){continue}printf " -k " $i "n"}}'

5/6/7

/5/6/7

$ echo "5/6/7" | sed -e 's;^;/;' -e 's;/\([^/]*\);-k \1n ;g'
-k 5n -k 6n -k 7n

$ echo "5/6/7" | awk -F/ '{OFS="n -k "; $1="-k "$1; print $0"n"} '
-k 5n -k 6n -k 7n