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LibC/Shell: Add unsetenv(), and unset builtin calling it in Shell.

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This commit is contained in:
Robin Burchell 2019-05-16 14:22:12 +02:00 • committed by Andreas Kling
parent b2dd12daac
commit abb7455163
3 changed files with 45 additions and 2 deletions
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15
Shell/main.cpp
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@ -80,6 +80,17 @@ static int sh_export(int argc, char** argv)
return 0;
}
static int sh_unset(int argc, char** argv)
{
if (argc != 2) {
fprintf(stderr, "usage: unset variable\n");
return 1;
}
unsetenv(argv[1]);
return 0;
}
static int sh_cd(int argc, char** argv)
{
char pathbuf[PATH_MAX];
@ -167,6 +178,10 @@ static bool handle_builtin(int argc, char** argv, int& retval)
retval = sh_export(argc, argv);
return true;
}
if (!strcmp(argv[0], "unset")) {
retval = sh_unset(argc, argv);
return true;
}
if (!strcmp(argv[0], "history")) {
retval = sh_history(argc, argv);
return true;