|
| cat A
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|
a
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b
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c
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|
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| cat A |\
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xargs -n 1 ksh -c 'echo \{`cat A`\}' |\
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xargs |\
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sed -e 's; ;,;g' \
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-e 's;^;echo ;g' \
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-e 's;\},;}\\ ;g' |\
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ksh |unfold `wc -l A` |\
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xargs -n1 -I{} ksh -c 'echo {} |\
|
|
unfold 1 |sort -u |xargs' |sort -u
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|
|
|
a
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|
a b
|
|
a b c
|
|
a c
|
|
b
|
|
b c
|
|
c
|