commit 8380cc51e12ea38e5cc609bfd9226905e5a3036a
from: Benjamin Stürz <benni@stuerz.xyz>
date: Mon May 01 13:22:32 2023 UTC

Print Header & -n option

commit - 3103dec457d1a69422047e1eef4aae1c7d0cfc1c
commit + 8380cc51e12ea38e5cc609bfd9226905e5a3036a
blob - 6a3a8644b63bd2bb87b113f059ae3d9ea066e81d
blob + 5f5517620940cc53d22dab6a586393a78b4a344a
--- lsblk.8
+++ lsblk.8
@@ -11,11 +11,11 @@
 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-.TH LSBLK 8 lsblk-@VERSION@ 2023-04-30
+.TH LSBLK 8 lsblk-@VERSION@ 2023-05-01
 .SH NAME
 lsblk \- list block devices
 .SH SYNOPSIS
-.B lsblk [-V]
+.B lsblk [-Vn]
 .SH DESCRIPTION
 The
 .B lsblk
@@ -24,5 +24,8 @@ utility can be used to examine block devices attached 
 .TP
 .B \-V
 prints version information to stdout, then exits.
+.TP
+.B \-n
+don't print the header.
 .SH SEE ALSO
 .BR disklabel (8)
blob - a80183d89544445d1fe6e1614124fda08509c3e6
blob + 5cdd6db7b9dda8c564aafc9dd261b220f9e4049c
--- lsblk.c
+++ lsblk.c
@@ -24,6 +24,7 @@
 #include <sys/mount.h>
 #include <sys/dkio.h>
 #include <inttypes.h>
+#include <stdbool.h>
 #include <string.h>
 #include <stdarg.h>
 #include <stdint.h>
@@ -117,7 +118,7 @@ static void printsize (uint64_t sz)
 
 static int usage (void)
 {
-    fputs ("Usage: lsblk [-V]\n", stderr);
+    fputs ("Usage: lsblk [-Vn]\n", stderr);
     return 1;
 }
 
@@ -136,18 +137,23 @@ static char *stripdisk (char *n)
 
 int main (int argc, char *argv[])
 {
+    int option;
+    bool header = true;
+
     if (unveil ("/dev", "r") == -1)
         die ("unveil(/dev)");
 
     if (unveil (NULL, NULL) == -1)
         die ("unveil()");
 
-    int option;
-    while ((option = getopt (argc, argv, ":V")) != -1) {
+    while ((option = getopt (argc, argv, ":Vn")) != -1) {
         switch (option) {
         case 'V':
             puts ("lsblk-" VERSION);
             return 0;
+        case 'n':
+            header = false;
+            break;
         default:
             return usage ();
         }
@@ -166,6 +172,9 @@ int main (int argc, char *argv[])
     if (n_mounts == 0)
         die ("getmntinfo()");
 
+    if (header)
+        puts ("NAME   SIZE TYPE     MOUNTPOINT");
+
     for (char *disk; (disk = strsep (&names, ",")) != NULL;) {
         struct disklabel label;
         char *colon, *name = NULL;