| # Verify behavior of printenv. | |
| # Copyright (C) 2009-2025 Free Software Foundation, Inc. | |
| # This program is free software: you can redistribute it and/or modify | |
| # it under the terms of the GNU General Public License as published by | |
| # the Free Software Foundation, either version 3 of the License, or | |
| # (at your option) any later version. | |
| # This program is distributed in the hope that it will be useful, | |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| # GNU General Public License for more details. | |
| # You should have received a copy of the GNU General Public License | |
| # along with this program. If not, see <https://www.gnu.org/licenses/>. | |
| . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src | |
| print_ver_ printenv | |
| # Without arguments, printenv behaves like env. Some shells provide | |
| # printenv as a builtin, so we must invoke it via "env". | |
| # But beware of $_, set by many shells to the last command run. | |
| # Also, filter out LD_PRELOAD, which is set when running under valgrind. | |
| # Note the apparently redundant "env env": this is to ensure to get | |
| # env's output the same way as that of printenv and works around a bug | |
| # on aarch64 at least where libc's execvp reverses the order of the | |
| # output. | |
| env -- env | grep -Ev '^(_|LD_PRELOAD)=' > exp || framework_failure_ | |
| env -- printenv | grep -Ev '^(_|LD_PRELOAD)=' > out || fail=1 | |
| compare exp out || fail=1 | |
| # POSIX is clear that environ may, but need not be, sorted. | |
| # Environment variable values may contain newlines, which cannot be | |
| # observed by merely inspecting output from printenv. | |
| if env -- printenv | grep '^ENV_TEST' >/dev/null ; then | |
| skip_ "environment has potential interference from ENV_TEST*" | |
| fi | |
| # Printing a single variable's value. | |
| returns_ 1 env -- printenv ENV_TEST > out || fail=1 | |
| compare /dev/null out || fail=1 | |
| echo a > exp || framework_failure_ | |
| ENV_TEST=a env -- printenv ENV_TEST > out || fail=1 | |
| compare exp out || fail=1 | |
| # Printing multiple variables. Order follows command line. | |
| ENV_TEST1=a ENV_TEST2=b env -- printenv ENV_TEST2 ENV_TEST1 ENV_TEST2 > out \ | |
| || fail=1 | |
| ENV_TEST1=a ENV_TEST2=b env -- printenv ENV_TEST1 ENV_TEST2 >> out || fail=1 | |
| cat <<EOF > exp || framework_failure_ | |
| b | |
| a | |
| b | |
| a | |
| b | |
| EOF | |
| compare exp out || fail=1 | |
| # Exit status reflects missing variable, but remaining arguments processed. | |
| export ENV_TEST1=a | |
| returns_ 1 env -- printenv ENV_TEST2 ENV_TEST1 > out || fail=1 | |
| returns_ 1 env -- printenv ENV_TEST1 ENV_TEST2 >> out || fail=1 | |
| unset ENV_TEST1 | |
| cat <<EOF > exp || framework_failure_ | |
| a | |
| a | |
| EOF | |
| compare exp out || fail=1 | |
| # Non-standard environment variable name. Shells won't create it, but | |
| # env can, and printenv must be able to deal with it. | |
| echo b > exp || framework_failure_ | |
| env -- -a=b printenv -- -a > out || fail=1 | |
| compare exp out || fail=1 | |
| # Silently reject invalid env-var names. | |
| # Bug present through coreutils 8.0. | |
| returns_ 1 env a=b=c printenv a=b > out || fail=1 | |
| compare /dev/null out || fail=1 | |
| Exit $fail | |