Tag Archives: bash

script

dmidecode to json using awk

dmidecode | awk '
BEGIN {
	printf "{"
	first_entry = 0
	is_array = 0
	array_first_entry = 0
}
{
	if ($0 ~ /^Handle/) {
		if (is_array) {
			printf "]"
			is_array = 0
		}
		if (first_entry) {
			printf "},"
		}
		first_entry = 1

		gsub(/,$/, "", $2);
		printf "\"%s\": {", $2

		getline line
		printf "\"_description\": \"%s\"", line

		gsub(/,$/, "", $5);
		printf ",\"_type\": \"%s\"", $5

		gsub(/,$/, "", $6);
		printf ",\"_bytes\": \"%s\"", $6
	} else if ($0 ~ /:/) {
		if (is_array) {
			printf "]"
			is_array = 0
		}
		gsub(/^[[:space:]]+/, "", $0)
		split($0, a, ": ");
		if (length(a) > 1) {
			gsub(/"/, "\\\"", a[2])
			gsub(/[[:space:]]+$/, "", a[2])
			printf ",\"%s\": \"%s\"", a[1], a[2]
		}
		else if (length(a) == 1) {
			gsub(/:$/, "", a[1])
			printf ",\"%s\": [", a[1]
			is_array = 1
			array_first_entry = 0
		}
	}
	else if (is_array && NF > 0) {
		if (array_first_entry) {
			printf ","
		}
		array_first_entry = 1
		gsub(/^[[:space:]]+/, "", $0)
		gsub(/"/, "\\\"", $0)
		printf "\"%s\"", $0
	}
}
END {
	if (is_array) {
		printf "]"
	}
	print "}}"
}'
howto

Unifi USG Radius default vlan

on USG

/config/scripts/post-config.d/radius_default_vlan.sh

#!/bin/bash
# radius_default_vlan.sh
# This script goes in /config/scripts/post-config.d


if [[ -z "$1" ]] ; then
	echo "* * * * * root /config/scripts/post-config.d/radius_default_vlan.sh cron" > /etc/cron.d/radius_default_vlan
	exit 0
fi



if grep -q "DEFAULT Auth-Type" "/etc/freeradius/users" ; then
	exit 0
fi

cat >> /etc/freeradius/users <<EOF

DEFAULT Auth-Type := Accept
	Tunnel-Type             = 13,
	Tunnel-Medium-Type      = 6,
	Tunnel-Private-Group-Id = 1

EOF

service freeradius restart

install

chmod +x /config/scripts/post-config.d/radius_default_vlan.sh
/config/scripts/post-config.d/radius_default_vlan.sh

remove

rm /etc/cron.d/radius_default_vlan
rm /config/scripts/post-config.d/radius_default_vlan.sh
snippet

WebDAV with cURL

Assuming the following Data:

  • Webdav URL: http://example.com/webdav
  • Username: user
  • Password: pass

Actions

Reading Files/Folders

curl 'http://example.com/webdav'

Creating new Folder

curl -X MKCOL 'http://example.com/webdav/new_folder'

Uploading File

curl -T '/path/to/local/file.txt' 'http://example.com/webdav/test/new_name.txt'

Renaming File

curl -X MOVE --header 'Destination:http://example.org/webdav/new.txt' 'http://example.com/webdav/old.txt'

Deleting Files/Folders

File:

curl -X DELETE 'http://example.com/webdav/test.txt'

Folder:

curl -X DELETE 'http://example.com/webdav/test'

List Files in a Folder

curl -i -X PROPFIND http://example.com/webdav/ --upload-file - -H "Depth: 1" <<end
<?xml version="1.0"?>
<a:propfind xmlns:a="DAV:">
<a:prop><a:resourcetype/></a:prop>
</a:propfind>
end

Continue reading WebDAV with cURL →

snippet

Mount disk image partition

View partition table of disk.img:

fdisk -lu disk.img

Disk disk.img: 1.3 GiB, 1361051648 bytes, 2658304 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x6f92008e

Device    Boot  Start     End Sectors  Size Id Type
disk.img1        8192  131071  122880   60M  c W95 FAT32 (LBA)
disk.img2      131072 2658303 2527232  1.2G 83 Linux

Mount partition by using start multiplied by sector size as offset

mount -o loop,offset=$((131072 * 512)) disk.img /mnt