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sort a list of comma separated numbers: sort_csn

Terminal - sort a list of comma separated numbers: sort_csn
sort_csn () { echo "${1}" | sed -e "s/,/\n/g"| sort -nu | awk '{printf("%s,",$0)} END {printf("\n")}' | sed -e "s/,$//"; }
2011-01-26 15:18:08
User: mpb
Functions: awk echo sed sort
0
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

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives

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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).

Comment by flatcap 240 weeks ago

That's good fu! Tnx :-)

Comment by mpb 240 weeks ago

Your point of view

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