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#!/usr/bin/expect
if {$argc == 1} {
set command [lindex $argv 0]
} else {
set command ""
}
set timeout 2
expect_after default {puts "\nFAIL"; exit 1}
spawn /bin/bash
expect "# "
send "id\r"
expect "uid=0(root) gid=0(root) groups=0(root)\r"
expect "# "
send "export FOO=bar\r"
expect "# "
#=============================================================================
#
# su --preserve-environment, as for regular su, environment is preserved
#
#=============================================================================
send "/bin/su $command -m myuser\r"
expect "$ "
send "id\n"
expect "uid=424242(myuser) gid=424242(myuser) groups=424242(myuser)\r"
expect "$ "
send_user "\n# FOO should be 'bar'"
send "\r"
expect "$ "
send "echo \"FOO=\\\"\$FOO\\\"\"\r"
expect "FOO=\"bar\"\r"
expect "$ "
send "exit\r"
expect "# "
puts "\nPASS"
exit 0
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