95 lines
2.7 KiB
Diff
95 lines
2.7 KiB
Diff
commit 8b7978b114e5df89218daa9b4b48cc0e918ba917
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Author: Sourabh Jain <sourabhjain@linux.ibm.com>
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Date: Mon Feb 4 16:15:14 2019 +0530
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lparstat: introduce the help command line option to print lparstat usage
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This patch adds a function to print the usage of lparstat. Also,
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a new element is added to structure option to handle long command
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line argument for help.
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Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
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Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
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diff --git a/man/lparstat.8 b/man/lparstat.8
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index 9721580..467f570 100644
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--- a/man/lparstat.8
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+++ b/man/lparstat.8
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@@ -9,8 +9,9 @@
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.SH NAME
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lparstat \- Reports logical partition ( LPAR ) related information and statistics.
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.SH SYNOPSIS
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-.B /usr/sbin/lparstat
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-[ -i ] [ interval [ count ] ]
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+.B /usr/sbin/lparstat [ options ]
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+.HP
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+.B /usr/sbin/lparstat <interval> [ count ]
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.SH DESCRIPTION
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The \fIlparstat\fR command provides a report of LPAR related information and utilization statistics. This command provides a display of current LPAR related parameters and Hypervisor information, as well as utilization statistics for the LPAR.
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@@ -202,6 +203,17 @@ Desired Variable Capacity Weight
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The variable memory capacity weight of the LPAR.
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.TP
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.SH
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+.TP
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+\fB\-h, --help\fR
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+Display the usage of lparstat.
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+.RS
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+.SH
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+.TP
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+\fB\-V, --version\fR
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+Display the lparstat version information.
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+.RS
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+.SH
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+.TP
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interval
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The
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.B interval
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diff --git a/src/lparstat.c b/src/lparstat.c
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index c9b86fd..1abe54d 100644
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--- a/src/lparstat.c
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+++ b/src/lparstat.c
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@@ -655,8 +655,20 @@ void print_default_output(int interval, int count)
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} while (--count > 0);
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}
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+static void usage(void)
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+{
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+ printf("Usage: lparstat [ options ]\n\tlparstat <interval> [ count ]\n\n"
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+ "options:\n"
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+ "\t-h, --help Show this message and exit.\n"
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+ "\t-V, --version \tDisplay lparstat version information.\n"
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+ "\t-i Lists details on the LPAR configuration.\n"
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+ "interval The interval parameter specifies the amount of time between each report.\n"
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+ "count The count parameter specifies how many reports will be displayed.\n");
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+}
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+
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static struct option long_opts[] = {
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{"version", no_argument, NULL, 'V'},
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+ {"help", no_argument, NULL, 'h'},
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{0, 0, 0, 0},
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};
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@@ -672,7 +684,7 @@ int main(int argc, char *argv[])
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exit(1);
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}
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- while ((c = getopt_long(argc, argv, "iV",
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+ while ((c = getopt_long(argc, argv, "iVh",
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long_opts, &opt_index)) != -1) {
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switch(c) {
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case 'i':
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@@ -681,7 +693,12 @@ int main(int argc, char *argv[])
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case 'V':
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printf("lparstat - %s\n", VERSION);
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return 0;
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+ case 'h':
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+ usage();
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+ return 0;
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case '?':
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+ usage();
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+ return 1;
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default:
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break;
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}
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