CSV data manipulation: Difference between revisions
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{{works with|bash}} |
{{works with|bash}} |
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Very simple solution using powerfull and ancient but strong linux command, I named "tr", and |
Very simple solution using powerfull and ancient but strong linux command, I named "tr" and "bc", and internal variable bash test capabilities : |
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<lang>cat csv | while read S; do |
<lang>cat csv | while read S; do |
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[ -z ${S##*C*} ] && echo $S,SUM || echo $S,`echo $S | tr ',' '+' | bc` |
[ -z ${S##*C*} ] && echo $S,SUM || echo $S,`echo $S | tr ',' '+' | bc` |
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Result : |
Result : |
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<lang> |
<lang>C1,C2,C3,C4,C5,SUM |
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1,5,9,13,17,45 |
1,5,9,13,17,45 |
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2,6,10,14,18,50 |
2,6,10,14,18,50 |
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4,8,12,16,20,60</lang> |
4,8,12,16,20,60</lang> |
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Other solution : |
Other solution (not from me) : |
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<lang> |
<lang>bash>exec 0<"$1" # open the input file on stdin |
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exec 1>"$1.new" # open an output file on stdout |
exec 1>"$1.new" # open an output file on stdout |
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{ |
{ |
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