From c0cfbe12e4089431a2cbc69ba7c6b919cc7d4054 Mon Sep 17 00:00:00 2001 From: Nicholas Marriott Date: Thu, 22 Mar 2012 11:11:57 +0000 Subject: Accept an argument to show-environment to show one variable, based on a diff from Kazuhiko Sakaguchi. --- cmd-show-environment.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) (limited to 'cmd-show-environment.c') diff --git a/cmd-show-environment.c b/cmd-show-environment.c index e84ff685..17960321 100644 --- a/cmd-show-environment.c +++ b/cmd-show-environment.c @@ -31,8 +31,8 @@ int cmd_show_environment_exec(struct cmd *, struct cmd_ctx *); const struct cmd_entry cmd_show_environment_entry = { "show-environment", "showenv", - "gt:", 0, 0, - "[-g] " CMD_TARGET_SESSION_USAGE, + "gt:", 0, 1, + "[-g] " CMD_TARGET_SESSION_USAGE " [name]", 0, NULL, NULL, @@ -55,6 +55,19 @@ cmd_show_environment_exec(struct cmd *self, struct cmd_ctx *ctx) env = &s->environ; } + if (args->argc != 0) { + envent = environ_find(env, args->argv[0]); + if (envent == NULL) { + ctx->error(ctx, "unknown variable: %s", args->argv[0]); + return (-1); + } + if (envent->value != NULL) + ctx->print(ctx, "%s=%s", envent->name, envent->value); + else + ctx->print(ctx, "-%s", envent->name); + return (0); + } + RB_FOREACH(envent, environ, env) { if (envent->value != NULL) ctx->print(ctx, "%s=%s", envent->name, envent->value); -- cgit v1.2.3