[PATCH 1/8] Parse option value from nmcli output

[Coiby Xu]

The nmcli output has the format of "OPTION_NAME:    VALUE", e.g.
   IP4.ROUTE[4]:                           dst = 192.168.43.0/24, nh = 0.0.0.0, mt = 600
   IP4.DNS[1]:                             192.168.43.1
   802-3-ethernet.s390-options:            layer2=1,portname=z-104,portno=0
   802-3-ethernet.s390-subchannels:        --

Signed-off-by: Coiby Xu <coxu(a)redhat.com&gt;
---
 kdump-lib.sh | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/kdump-lib.sh b/kdump-lib.sh
index 21271cf..333591c 100755
--- a/kdump-lib.sh
+++ b/kdump-lib.sh
@@ -372,6 +372,30 @@ get_hwaddr()
     fi
 }
 
+
+# Parse option value from the output of nmcli connection/device show
+# 
+# The output has the format of "OPTION_NAME:    VALUE", e.g.
+#   IP4.ROUTE[4]:                           dst = 192.168.43.0/24, nh = 0.0.0.0, mt =
600
+#   IP4.DNS[1]:                             192.168.43.1
+#   802-3-ethernet.s390-options:            layer2=1,portname=z-104,portno=0
+#   802-3-ethernet.s390-subchannels:        --
+#
+# Use -F (interept patterns as fixed string) for grep.
+get_nmcli_value_by_option()
+{
+    local _nmcli_out=$1
+    local _option=$2
+
+    local val=$(grep -F $_option <<< "$_nmcli_out" | sed
"s/.*:\s*//g")
+
+    if [ "$val" = "--" ]; then
+        val=""
+    fi
+
+    echo -n "$val"
+}
+
 get_ifcfg_by_device()
 {
     grep -E -i -l "^[[:space:]]*DEVICE=\"*${1}\"*[[:space:]]*$" \
-- 
2.30.1