bash - How could I remove a row which three components of a row in one file is similar to another file? -

-

this question has answer here:

i have 2 files format of data , space character in them different. want compare these 2 files , if first 3 columns of each row in file1 similar file2, remove these rows file2 , save rest of file2 in file2.
example:

file1: 4775.00 5215.28 23.9655 7   2.54766  4568.06 5611.74 22.0619 56  2.36560   file2:  6944.69 5605.22 22.6416       44 2.31929 0.914626 1619.15 5597.93 23.7979       12 2.38169 0.684619 5986.66 5599.89 23.8822        6 2.99171 0.384949 4568.06 5611.74 22.0619       56 2.36560 0.973764 1365.00 5601.16 23.3325       15 3.78138 0.212834 1787.81 5209.01 23.4643        8 3.34705 0.486087 5287.90 5244.40 21.9990      104 5.28082 0.000269982 4775.00 5215.28 23.9655        7 2.54766 0.467107 9024.54 5235.34 21.0784      120 3.13061 0.0357055

cheers.

i'd forward when needed. meanwhile here's solution:

#!/usr/bin/awk -f  fnr == nr {     a[$1] = nr     b[$2] = nr     c[$3] = nr     next } $1 in {     t = a[$1]     if (b[$2] == t && c[$3] == t) {         next     } } {     r[++i] = $0 } end {     (j = 1; j <= i; ++j) {         print r[j] > argv[2]     } }

warning: directly modifies file required.

usage:

awk -f script.awk file1 file2

example result:

6944.69 5605.22 22.6416       44 2.31929 0.914626 1619.15 5597.93 23.7979       12 2.38169 0.684619 5986.66 5599.89 23.8822        6 2.99171 0.384949 1365.00 5601.16 23.3325       15 3.78138 0.212834 1787.81 5209.01 23.4643        8 3.34705 0.486087 5287.90 5244.40 21.9990      104 5.28082 0.000269982 9024.54 5235.34 21.0784      120 3.13061 0.0357055

if don't want have direct modification second file, don't use redirection on last part:

end {     (j = 1; j <= i; ++j) {         print r[j]     } }

Comments

Post a Comment

Popular posts from this blog

c# - How Configure Devart dotConnect for SQLite Code First? -

-
can configure following sample code ? when run following code, error : no entity framework provider found ado.net provider invariant name 'devart.data.sqlite' setting in machine.config <system.data> <dbproviderfactories> <add name="dotconnect sqlite" invariant="devart.data.sqlite" description="devart dotconnect sqlite" type="devart.data.sqlite.sqliteproviderfactory, devart.data.sqlite, version=4.6.287.0, culture=neutral, publickeytoken=09af7300eec23701" /> </dbproviderfactories> </system.data> after add below block code in app.config <?xml version="1.0"?> <configuration>   <configsections> <!-- more information on entity framework configuration, visit http://go.microsoft.com/fwlink/?linkid=237468 --> <section name="entityframework" type="system.data.entity.internal.configfile.entityframeworksection, entit...
Read more

java - Copying object fields -

-
what best way of copying classes when need have 2 independent variables? have simple class: public class myclass { boolean = false; string b= "not empty"; } do need make method : assign(myclass data ) { a= data.a; b= data.b; } is there automatic method copy (duplicate) objects in java? do need make method : pretty close. instead of making method, should make constructor. such constructors called copy constructor , , create them this: myclass(myclass data) { = data.a; b = data.b; } and create copy of instance, use constructor this: myclass obj1 = new myclass(); myclass obj2 = new myclass(obj1); copy constructor can tedious : using copy constructor create deep-copy can tedious, when class has mutable fields. in case, assignment create copy of reference, , not object itself. have create copy of fields (if want deep copy). can go recursive. a better way create deep copy serialize , deserialize object. why not use clone()? ...
Read more

c++ - Clear the memory after returning a vector in a function -

-
i have function processes , stores lot of data in , returns results vector of class. amount of data stored in function tremendous , want clear storage memory of function after finished job. necessary (does function automatically clear memory) or should clear memory function? update: vector<customers> process(char* const *filename, vector<int> id) { vector<customers> list_of_customers; (perform actions) return list_of_customers; } variables defined locally within function automatically released @ end of function scope. destructors objects called, should free memory allocated objects (if objects coded correctly). example of such object std::vector . anything you've allocated new must have corresponding delete release storage. try avoid doing own allocation , use raii instead, i.e. containers or smart pointers.
Read more