回答編集履歴
1
追記
answer
CHANGED
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@@ -3,4 +3,49 @@
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3
3
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```
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4
4
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cp hoge hoge.bak
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5
5
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awk -F " *[=,] *" '{delete n; printf "%s=%s", $1,$2; n[$2]=1; for(i=3;i<=NF;i++){n[$i]++; if(n[$i]<=1) printf ",%s",$i;} printf "\n"}' hoge.bak > hoge
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6
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+
```
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7
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+
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8
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+
# 追記
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9
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+
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10
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+
だいぶん話が違っていたことがわかってきたので、改めて。
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11
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+
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12
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+
hoge.txt
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13
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+
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14
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```
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15
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+
# aaaaa = t11111,t22222,t33333,t44444,t55555
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16
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aaaaa = t11111,t22222,t33333,t44444,t55555
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17
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bbbbb = t11111,t22222,t33333,t44444,t55555
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18
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+
ccccc = t11111,t22222,t33333,t44444,t11111,t22222,t99999
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19
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```
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20
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+
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21
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test.awk
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22
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```
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23
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BEGIN{
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24
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FS = " *[=,] *";
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25
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}
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26
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/^#/{
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27
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sub(/^# */, "", $1);
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28
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printf "%s=\n", $1;
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29
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next;
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30
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}
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31
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{
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32
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delete n;
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33
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printf "%s=%s", $1, $2;
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34
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n[$2]=1;
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35
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for(i=3; i<=NF; i++){
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36
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n[$i]++;
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37
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if(n[$i]<=1) printf ",%s", $i;
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38
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}
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39
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printf "\n";
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40
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}
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41
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```
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42
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+
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43
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実行
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44
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+
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45
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```
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46
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$ awk -f test.awk hoge.txt
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47
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aaaaa=
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48
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aaaaa=t11111,t22222,t33333,t44444,t55555
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49
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bbbbb=t11111,t22222,t33333,t44444,t55555
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50
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ccccc=t11111,t22222,t33333,t44444,t99999
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6
51
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```
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