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When ‘--help’ is given, just run ‘man’ to show the manual page

Browse source 
I.e. do what git does.  I'm too lazy to keep the builtin help text up
to date :-)

Also add ‘--help’ to various commands that lacked it
(e.g. nix-collect-garbage).
This commit is contained in:
Eelco Dolstra 2012-10-03 16:37:06 -04:00
parent 9c41c66c5b
commit a562d544d8
25 changed files with 51 additions and 329 deletions
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11
scripts/nix-copy-closure.in
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@ -37,8 +37,11 @@ my @storePaths = ();
while (@ARGV) {
my $arg = shift @ARGV;
if ($arg eq "--sign") {
if ($arg eq "--help") {
exec "man nix-copy-closure" or die;
}
elsif ($arg eq "--sign") {
$sign = 1;
}
elsif ($arg eq "--gzip") {
@ -92,7 +95,7 @@ else { # Copy FROM the remote machine.
my $extraOpts = $includeOutputs ? "--include-outputs" : "";
my $pid = open(READ,
"set -f; ssh @sshOpts $sshHost nix-store --query --requisites $extraOpts @storePaths|") or die;
while (<READ>) {
chomp;
die "bad: $_" unless /^\//;
@ -106,7 +109,7 @@ else { # Copy FROM the remote machine.
print STDERR "copying ", scalar @missing, " missing paths from ‘$sshHost’...\n";
$compressor = "| $compressor" if $compressor ne "";
$decompressor = "$decompressor |" if $decompressor ne "";
$progressViewer = "$progressViewer |" if $progressViewer ne "";
$progressViewer = "$progressViewer |" if $progressViewer ne "";
unless ($dryRun) {
my $extraOpts = $sign ? "--sign" : "";
system("set -f; ssh $sshHost @sshOpts 'nix-store --export $extraOpts @missing $compressor' | $progressViewer $decompressor $Nix::Config::binDir/nix-store --import > /dev/null") == 0