40 lines
810 B
Lua
40 lines
810 B
Lua
local component = require "component"
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local sides = require "sides"
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local tA = {...}
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if #tA < 3 then
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io.stderr:write("usage: addalias <address> <side> <hostname>")
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return
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end
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local alines = {}
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local f = io.open("/etc/talias","rb")
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if f then
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for line in f:lines() do
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local lt = {}
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for word in line:gmatch("%S+") do
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lt[#lt+1] = word
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end
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alines[string.format("%s\t%s",table.remove(lt,1), table.remove(lt,1))] = lt
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end
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f:close()
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end
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local addr = component.get(tA[1])
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local side = tonumber(tA[2]) or sides[tA[2]]
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local aname = string.format("%s\t%s",addr,side)
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alines[aname] = alines[aname] or {}
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alines[aname][#alines[aname]+1] = tA[3]
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local f = io.open("/etc/talias","wb")
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for k,v in pairs(alines) do
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f:write(k)
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for _,w in ipairs(v) do
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f:write("\t"..w)
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end
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f:write("\n")
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end
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f:close()
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