I want to determine on macOS which version of .NET runtimes I have installed. I'm using command dotnet --list-runtimes to print available versions.

Microsoft.AspNetCore.App 6.0.9 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.11 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.9 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.11 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

Would love to create an array with above versions like ["6.0.9, "6.0.11"] to be able to see if there's a version higher or equal than, for example, 6.0.11.

I have a code that looks like this:

if [[ -f "/usr/local/share/dotnet/dotnet" ]]
then
    IFS=' '
    declare sdks=$(dotnet --list-runtimes)
    for runtime in "${sdks}"
    do
        echo $runtime
        declare split=("")
        read -a split <<< $runtime
        echo ${split[1]}
    done
    IFS=''
else
    echo "ERROR: Unable do determine installet .NET SDK."
fi

Unfortunately echo ${split[1]} prints only once 6.0.9.

CodePudding user response：

Check:

$ array=( $(dotnet --list-runtimes | awk '{a[$2]=""}END{for (i in a) print i}') )
$ printf '%s\n' "${array[@]}"
6.0.9
6.0.11

CodePudding user response：

If you want to print unique versions then use:

dotnet --list-runtimes | awk '!seen[$2]  {print $2}'

If you want to create an array in bash 3.2 then use:

vers=()
while read -r v; do
   vers =("$v")
done < <(dotnet --list-runtimes | awk '!seen[$2]  {print $2}')

# check array content
declare -p vers

declare -a vers=([0]="6.0.9" [1]="6.0.11")

Breakdown:

• awk '!seen[$2] {print $2}': prints unique version numbers from field #2
• < <(...) is process substitution
• readarray populates given array vers using output of process substitution

CodePudding user response：

Here's a bash version:

#!/usr/bin/env bash

declare -a sdks
while read -r runtime; do
    set $runtime
    sdks =("$2")
done < <(dotnet --list-runtimes)

echo "${sdks[@]}"

CodePudding user response：

Does this work for your purposes?

dotnet --list-runtimes | cut -d ' ' -f 2 | sort | uniq | xargs
6.0.11 6.0.9

---

Update

As used in a loop:

> for version in $(dotnet --list-runtimes | cut -d ' ' -f 2 | sort | uniq | xargs); do echo $version; done
6.0.11
6.0.9