sort_csn () { echo "${1}" | sed -e "s/,/\n/g"| sort -nu | awk '{printf("%s,",$0)} END {printf("\n")}' | sed -e "s/,$//"; }

sort a list of comma separated numbers: sort_csn

"sort_csn" is a function to sort a comma separated list of numbers. Define the the function with this: sort_csn () { echo "${1}" | sed -e "s/,/\n/g"| sort -nu | awk '{printf("%s,",$0)} END {printf("\n")}' | sed -e "s/,$//"; } Use the function like this: sort_csn 443,22,80,8200,1533,21,1723,1352,25 21,22,25,80,443,1352,1533,1723,8200 One example where this is useful is when port scanning with nmap and getting a list of open ports in random order. If you use Nessus, you may need to create a scan policy for that set of specific ports and it is clearer to read with the port numbers in ascending order (left to right). Caveat: no spaces in the comma separated list (just number1,number2,number3,etc). A variation of this to sort a comma separated list of strings: sort_css () { echo "${1}" | sed -e "s/,/\n/g"| sort -u | awk '{printf("%s,",$0)} END {printf("\n")}' | sed -e "s/,$//"; } usage: sort_css apples,pears,grapes,melons,oranges apples,grapes,melons,oranges,pears
Sample Output
$ sort_csn () { echo "${1}" | sed -e "s/,/\n/g"| sort -nu | awk '{printf("%s,",$0)} END {printf("\n")}' | sed -e "s/,$//"; }
$ sort_csn 443,22,80,8200,1533,21,1723,1352,25
21,22,25,80,443,1352,1533,1723,8200

0
By: mpb
2011-01-26 15:18:08

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What Others Think

Wow, that's a lot of code. How about simplifying it to this :-) sort_csn () { echo $1 | tr , '\n' | sort -nu | paste -s -d,; } tr 'translates' the commas into newlines, then sort, then paste -s (serial) with -d, (comma delimiters).
flatcap · 381 weeks and 6 days ago
That's good fu! Tnx :-)
mpb · 381 weeks and 6 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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