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@@ -0,0 +1,214 @@
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+#!/usr/bin/env bash
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+# -*- coding: utf-8; mode: sh indent-tabs-mode: nil -*-
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+# SPDX-License-Identifier: AGPL-3.0-or-later
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+#
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+# Tools to install and maintain golang [1] binaries & packages.
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+#
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+# [1] https://golang.org/doc/devel/release#policy
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+#
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+# A simple *helloworld* test with user 'my_user' :
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+#
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+# sudo -H adduser my_user
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+# ./manage go.golang go1.17.3 my_user
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+# ./manage go.install github.com/go-training/helloworld@latest my_user
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+# ./manage go.bash my_user
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+# $ helloword
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+# Hello World!!
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+#
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+# Don't forget to remove 'my_user': sudo -H deluser --remove-home my_user
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+
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+# shellcheck source=utils/lib.sh
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+. /dev/null
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+
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+# shellcheck disable=SC2034
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+declare main_cmd
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+
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+# configure golang environment
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+# ----------------------------
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+
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+[[ -z "${GO_VERSION}" ]] && GO_VERSION="go1.17.3"
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+
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+GO_DL_URL="https://golang.org/dl"
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+
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+# implement go functions
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+# -----------------------
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+
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+go.help(){
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+ cat <<EOF
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+go.:
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+ ls : list golang binary archives (stable)
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+ golang : (re-) install golang binary in user's \$HOME/local folder
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+ install : install go package in user's \$HOME/go-apps folder
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+ bash : start bash interpreter with golang environment sourced
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+EOF
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+}
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+
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+go.ls(){
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+ python3 <<EOF
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+import sys, json, requests
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+resp = requests.get("${GO_DL_URL}/?mode=json&include=all")
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+for ver in json.loads(resp.text):
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+ if not ver['stable']:
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+ continue
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+ for f in ver['files']:
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+ if f['kind'] != 'archive' or not f['size'] or not f['sha256'] or len(f['os']) < 2:
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+ continue
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+ print(" %(version)-10s|%(os)-8s|%(arch)-8s|%(filename)-30s|%(size)-10s|%(sha256)s" % f)
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+EOF
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+}
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+
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+go.ver_info(){
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+
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+ # print informations about a golang distribution. To print filename
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+ # sha256 and size of the archive that fits to your OS and host:
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+ #
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+ # go.ver_info "${GO_VERSION}" archive "$(go.os)" "$(go.arch)" filename sha256 size
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+ #
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+ # usage: go.ver_info <go-vers> <kind> <os> <arch> [filename|sha256|size]
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+ #
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+ # kind: [archive|source|installer]
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+ # os: [darwin|freebsd|linux|windows]
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+ # arch: [amd64|arm64|386|armv6l|ppc64le|s390x]
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+
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+ python3 - "$@" <<EOF
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+import sys, json, requests
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+resp = requests.get("${GO_DL_URL}/?mode=json&include=all")
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+for ver in json.loads(resp.text):
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+ if ver['version'] != sys.argv[1]:
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+ continue
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+ for f in ver['files']:
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+ if (f['kind'] != sys.argv[2] or f['os'] != sys.argv[3] or f['arch'] != sys.argv[4]):
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+ continue
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+ for x in sys.argv[5:]:
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+ print(f[x])
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+ sys.exit(0)
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+sys.exit(42)
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+EOF
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+}
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+
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+go.os() {
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+ local OS
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+ case "$(command uname -a)xx" in
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+ Linux\ *) OS=linux ;;
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+ Darwin\ *) OS=darwin ;;
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+ FreeBSD\ *) OS=freebsd ;;
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+ CYGWIN* | MSYS* | MINGW*) OS=windows ;;
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+ *) die 42 "OS is unknown: $(command uname -a)" ;;
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+ esac
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+ echo "${OS}"
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+}
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+
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+go.arch() {
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+ local ARCH
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+ case "$(command uname -m)" in
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+ "x86_64") ARCH=amd64 ;;
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+ "aarch64") ARCH=arm64 ;;
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+ "armv6" | "armv7l") ARCH=armv6l ;;
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+ "armv8") ARCH=arm64 ;;
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+ .*386.*) ARCH=386 ;;
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+ ppc64*) ARCH=ppc64le ;;
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+ *) die 42 "ARCH is unknown: $(command uname -m)" ;;
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+ esac
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+ echo "${ARCH}"
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+}
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+
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+go.golang() {
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+
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+ # install golang binary in user's $HOME/local folder:
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+ #
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+ # go.golang ${GO_VERSION} ${SERVICE_USER}
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+ #
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+ # usage: go.golang <go-vers> [<username>]
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+
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+ local version fname sha size user userpr
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+ local buf=()
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+
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+ version="${1:-${GO_VERSION}}"
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+ user="${2:-${USERNAME}}"
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+ userpr=" ${_Yellow}|${user}|${_creset} "
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+
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+ rst_title "Install Go in ${user}'s HOME" section
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+
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+ mapfile -t buf < <(
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+ go.ver_info "${version}" archive "$(go.os)" "$(go.arch)" filename sha256 size
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+ )
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+
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+ if [ ${#buf[@]} -eq 0 ]; then
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+ die 42 "can't find info of golang version: ${version}"
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+ fi
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+ fname="${buf[0]}"
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+ sha="${buf[1]}"
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+ size="$(numfmt --to=iec "${buf[2]}")"
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+
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+ info_msg "Download go binary ${fname} (${size}B)"
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+ cache_download "${GO_DL_URL}/${fname}" "${fname}"
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+
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+ pushd "${CACHE}" &> /dev/null
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+ echo "${sha} ${fname}" > "${fname}.sha256"
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+ if ! sha256sum -c "${fname}.sha256" >/dev/null; then
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+ die 42 "downloaded file ${fname} checksum does not match"
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+ else
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+ info_msg "${fname} checksum OK"
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+ fi
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+ popd &> /dev/null
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+
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+ info_msg "install golang"
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+ tee_stderr 0.1 <<EOF | sudo -i -u "${user}" | prefix_stdout "${userpr}"
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+mkdir -p \$HOME/local
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+rm -rf \$HOME/local/go
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+tar -C \$HOME/local -xzf ${CACHE}/${fname}
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+echo "export GOPATH=\$HOME/go-apps" > \$HOME/.go_env
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+echo "export PATH=\$HOME/local/go/bin:\\\$GOPATH/bin:\\\$PATH" >> \$HOME/.go_env
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+EOF
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+ info_msg "test golang installation"
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+ sudo -i -u "${user}" <<EOF
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+source \$HOME/.go_env
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+command -v go
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+go version
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+EOF
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+}
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+
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+go.install() {
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+
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+ # install go package in user's $HOME/go-apps folder:
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+ #
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+ # go.install github.com/go-training/helloworld@lates ${SERVICE_USER}
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+ #
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+ # usage: go.install <package> [<username>]
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+
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+ local package user userpr
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+
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+ package="${1}"
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+ user="${2:-${USERNAME}}"
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+ userpr=" ${_Yellow}|${user}|${_creset} "
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+
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+ if [ -z "${package}" ]; then
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+ die 42 "${FUNCNAME[0]}() - missing argument: <package>"
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+ fi
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+ tee_stderr 0.1 <<EOF | sudo -i -u "${user}" | prefix_stdout "${userpr}"
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+source \$HOME/.go_env
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+go install -v ${package}
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+EOF
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+}
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+
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+go.bash() {
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+
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+ # start bash interpreter with golang environment sourced
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+ #
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+ # go.bash ${SERVICE_USER}
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+ #
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+ # usage: go.bash [<username>]
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+
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+ local user
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+ user="${1:-${USERNAME}}"
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+ sudo -i -u "${user}" bash --init-file "~${user}/.go_env"
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+}
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+
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+go.version(){
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+ local user
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+ user="${1:-${USERNAME}}"
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+ sudo -i -u "${user}" <<EOF
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+source \$HOME/.go_env
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+go version | cut -d' ' -f 3
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+EOF
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+}
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Markus Heiser