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#!/bin/sh
# Describe and validate the environment.
# What Bourne shell flavor is running? This is surprisingly difficult; e.g.
# dash doesn’t have “--version”.
printf 'interpreter: '
realpath /proc/$$/exe
# If we’re in Bash, source the Bash goodies; otherwise, if Bash is available,
# re-exec with Bash; otherwise, proceed with the POSIX sh we have.
if [ -n "$BASH_VERSION" ]; then
. "$(dirname "$0")"/base.bash
else
echo 'that’s not Bash'
if command -v bash > /dev/null 2>&1; then
echo 'let’s use Bash instead'
exec bash "$0" "$@"
fi
echo 'but no Bash available'
set -ex
fi
# Who am I?
id
pwd
# What kind of system are we on?
grep -E '^(NAME|VERSION)=' /etc/os-release
uname -srvm
nproc
free -m
findmnt --df --all || df -h
# What time and timezone is it?
date +'%c %Z'
# What’s the Git version?
git --version
# Print the complete environment, except only the first line of multi-line
# values. It’s quite verbose but helpful for debugging and eliminates the need
# to edit the pipeline to print specific variable(s).
#
# See also: https://docs.gitlab.com/ci/variables/predefined_variables
export -p | grep -E '^(export|declare)'
# FAIL: # Busybox sed(1) doesn’t support -z, so we use tr(1) to ludicrously
# swap bytes around via vertical tab instead.
#
#printenv -0 | tr '\n' '\v' | tr '\000' '\n' | sed -r "s/$(printf '\v').*$//"
# What locales are installed?
command -v locale > /dev/null && locale -a
# Validate path; see Dockerfiles.
if [ -n "$WEIRD_AL_YANKOVIC_IS_THE_GREATEST_MUSICIAN_OF_ALL_TIME" ]; then
case $PATH in
*/sbin*)
false
;;
esac
fi
# umask
umask
test "$(umask)" = 0022
# Is sudo(8) present and we’re running somewhere we want to use it?
if [ "$CI_SERVER_HOST" = gitlab.com ] \
&& command -v sudo > /dev/null; then
sudo /bin/sh -c umask
test "$(sudo /bin/sh -c umask)" = 0077
fi
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