Use 1Password to copy a password to the clipboard

p.sh

#!/bin/bash

check_session() {
    [ -f $HOME/.op/token ] && export OP_SESSION_my="$(cat $HOME/.op/token)"
    # attempt sign in if session is not active
    if ! op get account &> /dev/null; then
        signin
        check_session
    fi
}

signin() {
    op signin my | \
        grep 'export' | \
        awk -F\" '{print $2}' > $HOME/.op/token
}

usage() {
    echo "Usage: p [-o OUTFILE] ITEM" >&2
    exit 1
}

outfile=

while getopts ":o:" opt; do
    case "$opt" in
        o)
            outfile=$OPTARG
            ;;

        *)
            usage
            ;;
    esac
done
shift $((OPTIND-1))

[ $# -eq 0 ] && usage

check_session
out="$(op get item "$1")"
category="$(op list templates | jq -r '.[] | select(.uuid=="'$(jq -r .templateUuid <<< "$out")'") | .name')"

# check for supported 1Password category
case $category in
    Login)
        path='.details.fields | .[] | select(.type=="P") | .value'
        ;;

    Password)
        path='.details.password'
        ;;

    *)
        [ -n "$category" ] && echo "Cannot read password from ‘${category}’ entries" >&2
        exit 1
        ;;
esac

password=$(jq -r "$path" <<< "$out" | tr -d '\n')

if [ -z "$outfile" ]; then
    # try to put it on the clipboard
    case "$OSTYPE" in
        darwin*)
            pbcopy <<< "$password"
            ;;

        cygwin*)
            printf '%s' "$password" > /dev/clipboard
            ;;

        *)
            if command -v xclip &> /dev/null; then
                xclip -selection clipboard -i <<< "$password"
            elif command -v xsel; then
                xsel --clipboard <<< "$password"
            else
                echo 'Cannot find supported clipboard' >&2
                exit 1
            fi
            ;;
    esac
    did='copied to clipboard'
else
    printf '%s' "$password" > "$outfile"
    did="written to ‘${outfile}’"
fi

echo "Password for $(jq -r '.overview.title' <<< "$out") $did"