在我的lua函数中,我可以使用:
arg='wlp1s0',
然后东西工作!
我想将参数更改为
的输出exec ip route get 8.8.8.8 | awk 'NR==1 {print $5}'
如何让它工作,以便将arg设置为返回上述命令的字符串?
好的,这是完整的功能:
settings_table = {
{
name='fs_used_perc',
arg='/',
max=100,
bg_colour=0xffffff,
bg_alpha=0.2,
fg_colour=0xBA1B19,
fg_alpha=0.8,
x=180, y=25,
radius=30,
thickness=7,
start_angle=140,
end_angle=320
},
{
name='battery_percent',
arg='',
max=100,
bg_colour=0xffffff,
bg_alpha=0.2,
fg_colour=0x3399FF,
fg_alpha=0.8,
x=170, y=32,
radius=40,
thickness=7,
start_angle=130,
end_angle=320
},
{
name='memperc',
arg='',
max=100,
bg_colour=0xffffff,
bg_alpha=0.2,
fg_colour=0x24CE09,
fg_alpha=0.8,
x=160, y=42,
radius=50,
thickness=7,
start_angle=130,
end_angle=320
},
{
name='cpu',
arg='cpu0',
max=100,
bg_colour=0xffffff,
bg_alpha=0.2,
fg_colour=0xCECE09,
fg_alpha=0.8,
x=150, y=52,
radius=60,
thickness=7,
start_angle=124,
end_angle=320
},
{
name='upspeedf',
arg='wlp1s0',
max=100,
bg_colour=0xffffff,
bg_alpha=0.2,
fg_colour=0xCE4209,
fg_alpha=0.8,
x=143, y=60,
radius=70,
thickness=7,
start_angle=124,
end_angle=320
},
{
name='downspeedf',
arg='wlp1s0',
max=100,
bg_colour=0xffffff,
bg_alpha=0.2,
fg_colour=0x6209CE,
fg_alpha=0.8,
x=135, y=67,
radius=80,
thickness=7,
start_angle=125,
end_angle=320
},
}
-- Use these settings to define the origin and extent of your clock.
clock_r=65
-- "clock_x" and "clock_y" are the coordinates of the centre of the clock, in pixels, from the top left of the Conky window.
clock_x=100
clock_y=150
show_seconds=true
require 'cairo'
function rgb_to_r_g_b(colour,alpha)
return ((colour / 0x10000) % 0x100) / 255., ((colour / 0x100) % 0x100) / 255., (colour % 0x100) / 255., alpha
end
function draw_ring(cr,t,pt)
local w,h=conky_window.width,conky_window.height
local xc,yc,ring_r,ring_w,sa,ea=pt['x'],pt['y'],pt['radius'],pt['thickness'],pt['start_angle'],pt['end_angle']
local bgc, bga, fgc, fga=pt['bg_colour'], pt['bg_alpha'], pt['fg_colour'], pt['fg_alpha']
local angle_0=sa*(2*math.pi/360)-math.pi/2
local angle_f=ea*(2*math.pi/360)-math.pi/2
local t_arc=t*(angle_f-angle_0)
-- Draw background ring
cairo_arc(cr,xc,yc,ring_r,angle_0,angle_f)
cairo_set_source_rgba(cr,rgb_to_r_g_b(bgc,bga))
cairo_set_line_width(cr,ring_w)
cairo_stroke(cr)
-- Draw indicator ring
cairo_arc(cr,xc,yc,ring_r,angle_0,angle_0+t_arc)
cairo_set_source_rgba(cr,rgb_to_r_g_b(fgc,fga))
cairo_stroke(cr)
end
function conky_clock_rings()
local function setup_rings(cr,pt)
local str=''
local value=0
str=string.format('${%s %s}',pt['name'],pt['arg'])
str=conky_parse(str)
value=tonumber(str)
pct=value/pt['max']
draw_ring(cr,pct,pt)
end
-- Check that Conky has been running for at least 5s
if conky_window==nil then return end
local cs=cairo_xlib_surface_create(conky_window.display,conky_window.drawable,conky_window.visual, conky_window.width,conky_window.height)
local cr=cairo_create(cs)
local updates=conky_parse('${updates}')
update_num=tonumber(updates)
if update_num>5 then
for i in pairs(settings_table) do
setup_rings(cr,settings_table[i])
end
end
端
在name ='upspeedf'的条目中,有一个arg ='wlp1s0'。还有'downppedf'。
我想通过命令行的输出自动选择它,这为我提供了界面gateaay。
exec ip route get 8.8.8.8 | awk 'NR==1 {print $5}'
在函数conky_clock_rings()中调用该函数。我想这也应该被修改。这澄清了我的问题吗?
再次感谢您的所有时间和精力!
答案 0 :(得分:0)
您必须使用io
库。如果你想运行你的命令并将它传递给Lua,就像这样:
exec ip route get 8.8.8.8 | awk 'NR==1 {print $5}' | lua program.lua
使用类似的东西:
local input = io.read("*all")
如果你想从Lua内部调用你的管道,你可以这样做:
local input = io.popen("exec ip route get 8.8.8.8 | awk 'NR==1 {print $5}'"):read("*all")
编辑:
阅读完解释后,可以采用以下方法:
local network_interface = io.popen("exec ip route get 8.8.8.8 | awk 'NR==1 {print $5}'"):read("*l")
settings_table = {
...,
{
name='upspeedf',
arg=network_interface,
...
},
...
}