diff options
Diffstat (limited to 'perl/lib/Sys/Guestfs.pm')
| -rw-r--r-- | perl/lib/Sys/Guestfs.pm | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/perl/lib/Sys/Guestfs.pm b/perl/lib/Sys/Guestfs.pm index 5aac2e91..001fa880 100644 --- a/perl/lib/Sys/Guestfs.pm +++ b/perl/lib/Sys/Guestfs.pm @@ -405,6 +405,13 @@ The first element is the name of the program to run. Subsequent elements are parameters. The list must be non-empty (ie. must contain a program name). +The return value is anything printed to I<stdout> by +the command. + +If the command returns a non-zero exit status, then +this function returns an error message. The error message +string is the content of I<stderr> from the command. + The C<$PATH> environment variable will contain at least C</usr/bin> and C</bin>. If you require a program from another location, you should provide the full path in the @@ -416,11 +423,19 @@ correct places. It is the caller's responsibility to ensure all filesystems that are needed are mounted at the right locations. +Because of the message protocol, there is a transfer limit +of somewhere between 2MB and 4MB. To transfer large files you should use +FTP. + =item @lines = $h->command_lines (\@arguments); This is the same as C<$h-E<gt>command>, but splits the result into a list of lines. +Because of the message protocol, there is a transfer limit +of somewhere between 2MB and 4MB. To transfer large files you should use +FTP. + =item $h->config ($qemuparam, $qemuvalue); This can be used to add arbitrary qemu command line parameters |