将2个基于datetime的csv文件与shell组合

嗨， 我有3个csv文件，如下所示

datetime，预测
2016-02-02 00:00:00, 23.34
2016-02-02 00:10:0029.23

时间戳，预测，v1，v2
2016-02-02 00:00:00, 68.56, 012, .23
2016-02-02 00:10:00,23.24,25,32

时间戳，预测[ma]，v1
2016-02-02 00:00:00, 56.32, 32
2016-02-02 00:10:0025.2156

我希望我的输出具有

时间，预测，预测1，预测2
2016-02-02 00:00:00, 23.34, 68.56, 56.32
2016-02-02 00:10:00,29.23,23.24,25.21

我已经创建了代码，将这些文件在xlsx中与python结合起来。现在我计划用shell进一步处理这些文件，我希望这些文件是csv格式的

我试过这样的代码

join-j2-o1.1,1.2,2.2请您尝试以下内容（这在大多数
awk
s中都应该有效）

输出如下

Time, Forecast, forecast1, forecast2
2016-02-02 00:00:00, 23.34, 68.56, 56.32
2016-02-02 00:10:00, 29.23, 23.24, 25.21

解释：现在添加上述代码的详细解释

awk '                                                ##Starting awk program here.
BEGIN{                                               ##Mentioning BEGIN section of awk which will execute before Input_file(s) getting read.
  FS=OFS=", "                                        ##Setting FS and OFS as ", " read man awk for FS and OFS too.
  print "Time, Forecast, forecast1, forecast2"       ##Printing headers for output.
}                                                    ##Closing BEGIN section here.
FNR==1{                                              ##Checking condition if this is first line of all Input_file(s).
  ++count                                            ##Increment variable count with 1 here.
  next                                               ##next will skip all further statements from here.
}                                                    ##Closing FNR==1 BLOCK here.
count==1{                                            ##Checking if count==1 then do following.
  a[$1]=$2                                           ##Creating an array a whose index $1 and value is $2.
  next                                               ##next will skip all further statements.
}                                                    ##Closing count==1 BLOCK here.
count==2{                                            ##Checking condition if count==2 then do following.
  a[$1]=a[$1] OFS $2                                 ##Concatenate value of a[$1] to its previous value which it got from file1.csv
  next                                               ##next will skip all further statements from here.
}                                                    ##Closing count==2 BLOCK here.
count==3{                                            ##Checking condition if count==3 then do following.
  print $1,a[$1],$2                                  ##Printing first field, a[$1] value  and $2 of current line for file3.csv
}'  file1.csv file2.csv file3.csv                    ##Mentioning all Input_file(s) names here.

awk '                                                ##Starting awk program here.
BEGIN{                                               ##Mentioning BEGIN section of awk which will execute before Input_file(s) getting read.
  FS=OFS=", "                                        ##Setting FS and OFS as ", " read man awk for FS and OFS too.
  print "Time, Forecast, forecast1, forecast2"       ##Printing headers for output.
}                                                    ##Closing BEGIN section here.
FNR==1{                                              ##Checking condition if this is first line of all Input_file(s).
  ++count                                            ##Increment variable count with 1 here.
  next                                               ##next will skip all further statements from here.
}                                                    ##Closing FNR==1 BLOCK here.
count==1{                                            ##Checking if count==1 then do following.
  a[$1]=$2                                           ##Creating an array a whose index $1 and value is $2.
  next                                               ##next will skip all further statements.
}                                                    ##Closing count==1 BLOCK here.
count==2{                                            ##Checking condition if count==2 then do following.
  a[$1]=a[$1] OFS $2                                 ##Concatenate value of a[$1] to its previous value which it got from file1.csv
  next                                               ##next will skip all further statements from here.
}                                                    ##Closing count==2 BLOCK here.
count==3{                                            ##Checking condition if count==3 then do following.
  print $1,a[$1],$2                                  ##Printing first field, a[$1] value  and $2 of current line for file3.csv
}'  file1.csv file2.csv file3.csv                    ##Mentioning all Input_file(s) names here.