cfg/bin/gen-shell-banner.sh

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#!/bin/bash
set -euo pipefail
function kv() {
printf "$(boxchar 78) %15s: %-64s $(boxchar 78)\n" "$@"
}
function boxchar() {
printf "\x1b(0\x$1\x1b(B"
}
## Redirect stdout into shell-banner.txt
exec >${HOME}/.local/shell-banner.txt
## Start output
printf "$(boxchar 6c)%083s$(boxchar 6b)\n" | sed "s/ /$(printf "$(boxchar 71)")/g"
## Check whether config repos needs update
kv "Config" "$(${HOME}/bin/check_config)"
## Check for latest Go version
if ( ping -c 1 -q 8.8.8.8 >/dev/null ); then
GO_VER=$(curl -sSLf -m 2 'https://lv.luzifer.io/catalog-api/golang/latest.txt?p=version')
if [ -e "${HOME}/.gimme/envs/go${GO_VER}.env" ]; then
kv "Go-Version" "Up-to-date (${GO_VER})"
else
kv "Go-Version" "Outdated (latest would be ${GO_VER})"
fi
else
kv "Go-Version" "Unknown, network unreachable"
fi
## Log generation time
kv "Updated" "$(date +"%Y-%m-%d %H:%M")"
## End output
printf "$(boxchar 6d)%083s$(boxchar 6a)\n" | sed "s/ /$(printf "$(boxchar 71)")/g"
echo # Add an extra blank line