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golang_news
feeds.twtxt.net
 (4y ago)

Settermtitle
A simple command-line tool written in Go that sets the terminal title. Useful for naming your various Terminal windows as you work on multiple things at the same time and need a way to quickly and easily identify which Terminal is which

1 points posted by James Mills ⌘ Read more

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niplav.site
niplav.site
 (4y ago)

rereading the wikipedia page on ramanujan, we should absolutely clone him and von Neumann, and have them talk to each other. this is either going to destroy the world or usher in utopia, not sure which

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niplav.site
niplav.site
 (4y ago)

not the best move on the side of the red cross to call me and tell me it’s because of my blood donation — i nearly had a panic attack for the 10 seconds that they didn’t tell me it was all fine (why would you call me then‽ and why speak as if you’re going to tell me i’ll be dead in a month‽)

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xuu
txt.sour.is
 (4y ago)

@prologic@twtxt.net 

#!/bin/sh

# Validate environment
if ! command -v msgbus > /dev/null; then
    printf "missing msgbus command. Use:  go install git.mills.io/prologic/msgbus/cmd/msgbus@latest"
    exit 1
fi

if ! command -v salty > /dev/null; then
    printf "missing salty command. Use:  go install go.mills.io/salty/cmd/salty@latest"
    exit 1
fi

if ! command -v salty-keygen > /dev/null; then
    printf "missing salty-keygen command. Use:  go install go.mills.io/salty/cmd/salty-keygen@latest"
    exit 1
fi

if [ -z "$SALTY_IDENTITY" ]; then
    export SALTY_IDENTITY="$HOME/.config/salty/$USER.key"
fi

get_user () {
    user=$(grep user: "$SALTY_IDENTITY" | awk '{print $3}')
    if [ -z "$user" ]; then
        user="$USER"
    fi
    echo "$user"
}

stream () {
    if [ -z "$SALTY_IDENTITY" ]; then
        echo "SALTY_IDENTITY not set"
        exit 2
    fi

    jq -r '.payload' | base64 -d | salty -i "$SALTY_IDENTITY" -d
}

lookup () {
    if [ $# -lt 1 ]; then
    printf "Usage: %s nick@domain\n" "$(basename "$0")"
    exit 1
    fi

    user="$1"
    nick="$(echo "$user" | awk -F@ '{ print $1 }')"
    domain="$(echo "$user" | awk -F@ '{ print $2 }')"

    curl -qsSL "https://$domain/.well-known/salty/${nick}.json"
}

readmsgs () {
    topic="$1"

    if [ -z "$topic" ]; then
        topic=$(get_user)
    fi

    export SALTY_IDENTITY="$HOME/.config/salty/$topic.key"
    if [ ! -f "$SALTY_IDENTITY" ]; then
        echo "identity file missing for user $topic" >&2
        exit 1
    fi

    msgbus sub "$topic" "$0"
}

sendmsg () {
    if [ $# -lt 2 ]; then
        printf "Usage: %s nick@domain.tld <message>\n" "$(basename "$0")"
        exit 0
    fi

    if [ -z "$SALTY_IDENTITY" ]; then
        echo "SALTY_IDENTITY not set"
        exit 2
    fi

    user="$1"
    message="$2"

    salty_json="$(mktemp /tmp/salty.XXXXXX)"

    lookup "$user" > "$salty_json"

    endpoint="$(jq -r '.endpoint' < "$salty_json")"
    topic="$(jq -r '.topic' < "$salty_json")"
    key="$(jq -r '.key' < "$salty_json")"

    rm "$salty_json"

    message="[$(date +%FT%TZ)] <$(get_user)> $message"

    echo "$message" \
        | salty -i "$SALTY_IDENTITY" -r "$key" \
        | msgbus -u "$endpoint" pub "$topic"
}

make_user () {
    mkdir -p "$HOME/.config/salty"

    if [ $# -lt 1 ]; then
        user=$USER
    else
        user=$1
    fi

    identity_file="$HOME/.config/salty/$user.key"

    if [ -f "$identity_file" ]; then
        printf "user key exists!"
        exit 1
    fi

    # Check for msgbus env.. probably can make it fallback to looking for a config file?
    if [ -z "$MSGBUS_URI" ]; then
        printf "missing MSGBUS_URI in environment"
        exit 1
    fi


    salty-keygen -o "$identity_file"
    echo "# user: $user" >> "$identity_file"

    pubkey=$(grep key: "$identity_file" | awk '{print $4}')

    cat <<- EOF
Create this file in your webserver well-known folder. https://hostname.tld/.well-known/salty/$user.json

{
  "endpoint": "$MSGBUS_URI",
  "topic": "$user",
  "key": "$pubkey"
}

EOF
}

# check if streaming
if [ ! -t 1 ]; then
    stream
    exit 0
fi

# Show Help
if [ $# -lt 1 ]; then
    printf "Commands: send read lookup"
    exit 0
fi


CMD=$1
shift

case $CMD in
    send)
        sendmsg "$@"
    ;;
    read)
        readmsgs "$@"
    ;;
    lookup)
        lookup "$@"
    ;;
    make-user)
        make_user "$@"
    ;;
esac

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golang_news
feeds.twtxt.net
 (4y ago)

update-golang 0.24 - easily fetch and install new Golang releases
update-golang is a script to easily fetch and install new Golang releases with minimum system intrusion.

When you need to quickly boot up a Golang binary release into a system.

The script can automatically detect the latest Golang release.

This release updates the URL for retrieving Go release list.

Full details: https://github.com/udhos/update-golang 1 point … ⌘ Read more

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golang_news
feeds.twtxt.net
 (4y ago)

Event: Generics in Go 1.18 - Introduced using a practical example
Go 1.18 is about to be released (or it is already depending when you’re reading this). One of the big things in it are generics. Axel Wagner will introduce us to generics using a practical example. 1 points posted by Sascha Andres ⌘ Read more

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aquilax
aquilax.avtobiografia.com
 (4y ago)

Writing free software is like painting. You should do it if you feel like it, or if you, yourself, get something out of it. The moment you start to feel that you are owed something is the moment that you should stop doing it, because what you do from then on is probably not going to be any good. Is it even worth working on FOSS anymore? | Hacker News

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golang_news
feeds.twtxt.net
 (4y ago)

The Go 1.18 generics landscape
A fairly complete presentation about Go 1.18 generics including examples, planned changes for future releases, writing generics code, defining constraints, new library packages, and generics examples for generics Map() / Reduce() / Filter()  and a type-safe Set implementation. 1 points posted by FGM ⌘ Read more

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