file deletion in a directory with some conditions .

[aki]

Hi All,

I describe the problem as below.

A directory( path known) , contains 0 to any number of files .
The file names are with following structure :

OMCID_NETYPE_NE NAME_NAMEOFTHEA PPLIEDFILE_APPL YDATE_trans.csv
For example :

4_TC_TC_48_NoST Configuration_1 971-1-1_trans.csv

where
OMCID =4
NETYPE= TC
NENAME= TC_48
NAMEOFTHEAPPLIE DFILE=NoSTConfi guration
APPLYDATE=1971-1-1


i have to perform delete operation on the file with matching three
fields .
OMCID , NETYPE, NENAME (All three known )

Could somebody try to answer the problem . or how to proceed

Regards
Aki

[Ian Collins]

Re: file deletion in a directory with some conditions .

aki wrote:

Hi All,
>

Please don't multi-post on Usenet. The answer is the same here is it
was on c.l.c.

--
Ian Collins.

[Ioannis Gyftos]

Re: file deletion in a directory with some conditions .

On Jul 31, 12:50 pm, aki <akhileshrawat. ..@gmail.comwro te:

Hi All,
>
  I describe the problem as below.
>
A directory( path known) , contains  0 to any number of files .
The file names are  with following structure :
>
OMCID_NETYPE_NE NAME_NAMEOFTHEA PPLIEDFILE_APPL YDATE_trans.csv
For example :
>
4_TC_TC_48_NoST Configuration_1 971-1-1_trans.csv
>
where
 OMCID =4
NETYPE= TC
NENAME= TC_48
NAMEOFTHEAPPLIE DFILE=NoSTConfi guration
APPLYDATE=1971-1-1
>
i have to perform delete operation on the file with matching  three
fields .
OMCID , NETYPE, NENAME (All three known )
>
Could somebody try to answer the problem . or how to proceed
>
Regards
Aki

If you do not want to reinvent the wheel, on a UNIX system you could
use something like that...

#!/bin/bash
#(I haven't actually tested)
function_foo() {
ls | awk -F _ -v var1=$1 -v var2=$2 -v var3=$3 '$1 == var1 && $2 ==
var2 && $3 == var3 {print($0)}' | xargs rm
}

[aki]

Re: file deletion in a directory with some conditions .

On Jul 31, 4:48 pm, Michael DOUBEZ <michael.dou... @free.frwrote:

aki a écrit :
>

Hi All,

>

I describe the problem as below.

>

A directory( path known) , contains 0 to any number of files .
The file names are with following structure :

>

OMCID_NETYPE_NE NAME_NAMEOFTHEA PPLIEDFILE_APPL YDATE_trans.csv
[snip]
i have to perform delete operation on the file with matching three
fields .
OMCID , NETYPE, NENAME (All three known )

>

Could somebody try to answer the problem . or how to proceed

>
Iterate over the elements of the directory and match the beginning of
the filename with "<OMCID>_<NETYP E>_<NENAME>" to locate and delete the
files.
>
Practically
* iterating in a directory with Boost:http://www.boost.org/doc/libs/1_35_0...ample/simple_l...
* for matching:
std::string filename="4_TC_ TC_48";
if(it->leaf().compare (0,filename.siz e(),filename)== 0)
{ //file to delete
>
}
>
Generally:
* You'd rather use
rm -f /path/4_TC_TC_48_*_tr ans.csv
DEL /F C:\path\4_TC_TC _48_*_trans.csv
* Show what you have done up to now before asking advices
>
--
Michael

thanks Michael for answering .
i feel i was short on providing all required information .
My apologies for that .
Well i want to write a C++ code for solving above problem under
solaris .
One way of doing which seems very normal is
*iterating in a directory for all files
* matching the file to be deletes
* perform delete operation on the file
as you told .
But from coding point of view ,
can i do it without sing boost .
Also can you elaborate , i am newbie in c++ ;)

thanks
Aki

[aki]

Re: file deletion in a directory with some conditions .

On Aug 1, 12:23 pm, Michael DOUBEZ <michael.dou... @free.frwrote:

aki a écrit :
>

*iterating in a directory for all files
* matching the file to be deletes
* perform delete operation on the file
as you told .
But from coding point of view ,
can i do it without sing boost .

>
C++ language doesn't deal with filesystem issues.
You can use the dirent.h header (look for opendir and scandir functions).
>
Otherwise, you can still use
system("rm -f /path/4_TC_TC_48_*_tr ans.csv");
:)
>
--
Michael

Thanks for input.
Well for system command path cannot be a variable , i tested it.
as this will not work
system("rm -f /path/OMCID_NETYPE_NE NAME_*_trans.cs v");

because OMCID , NETYPE, NENAME are variables.

Well , i think scandir will work for my case .

my job will be done if i get a builtin unix function
which can do this operation
eg.
string1="4_TC_T C_48"
string2= "4_TC_TC_48_NoS TConfiguration_ 1971-1-1_trans.csv"
fun(string1 , string2);
return value should be 4_TC_TC_48 i.e. all consecutive matching
character
Any inputs please.
regards
Aki

[James Kanze]

Re: file deletion in a directory with some conditions .

On Aug 1, 6:20 pm, aki <akhileshrawat. ..@gmail.comwro te:

On Aug 1, 12:23 pm, Michael DOUBEZ <michael.dou... @free.frwrote:

[...]

Well for system command path cannot be a variable,

Of course it can be. It can be an expression, just like any
other function argument.

i tested it. as this will not work
system("rm -f /path/OMCID_NETYPE_NE NAME_*_trans.cs v");

because OMCID , NETYPE, NENAME are variables.

So you need a different expression. Something like:

system( ("rm -f /path/" + OMCIDE + '_' + NETYPE + '_' +
NENAME + "_*_trans.swv") .c_str() ) ;

--
James Kanze (GABI Software) email:james.kan ze@gmail.com
Conseils en informatique orientée objet/
Beratung in objektorientier ter Datenverarbeitu ng
9 place Sémard, 78210 St.-Cyr-l'École, France, +33 (0)1 30 23 00 34

[aki]

Re: file deletion in a directory with some conditions .

On Aug 1, 11:17 pm, James Kanze <james.ka...@gm ail.comwrote:

On Aug 1, 6:20 pm, aki <akhileshrawat. ..@gmail.comwro te:
>

On Aug 1, 12:23 pm, Michael DOUBEZ <michael.dou... @free.frwrote:

>
[...]
>

Well for system command path cannot be a variable,

>
Of course it can be. It can be an expression, just like any
other function argument.
>

i tested it. as this will not work
system("rm -f /path/OMCID_NETYPE_NE NAME_*_trans.cs v");
because OMCID , NETYPE, NENAME are variables.

>
So you need a different expression. Something like:
>
system( ("rm -f /path/" + OMCIDE + '_' + NETYPE + '_' +
NENAME + "_*_trans.swv") .c_str() ) ;
>

Hello ,

i tried with this as following , but not working :(
string omcid;
string netype ;
string nename ;
//some stuff to get values inside the string variables

TrDebug<<"omcid "<<omcid<<e ndl; // here i printed the value it is
coming correct
TrDebug<<"netyp e"<<netype<<end l;// here also
TrDebug<<"nenam e"<<nename<<end l; // here also
system( ("rm -f /path/" + omcid + '_' + netype + '_' + nename +
"_*_trans.csv") .c_str() ) ;


thanks
Aki

--
James Kanze (GABI Software) email:james.ka. ..@gmail.com
Conseils en informatique orientée objet/
Beratung in objektorientier ter Datenverarbeitu ng
9 place Sémard, 78210 St.-Cyr-l'École, France, +33 (0)1 30 23 00 34

[James Kanze]

Re: file deletion in a directory with some conditions .

On Aug 4, 2:07 pm, aki <akhileshrawat. ..@gmail.comwro te:

On Aug 1, 11:17 pm, James Kanze <james.ka...@gm ail.comwrote:

On Aug 1, 6:20 pm, aki <akhileshrawat. ..@gmail.comwro te:

On Aug 1, 12:23 pm, Michael DOUBEZ <michael.dou... @free.frwrote:

[...]

Well for system command path cannot be a variable,

Of course it can be. It can be an expression, just like any
other function argument.

i tested it. as this will not work
system("rm -f /path/OMCID_NETYPE_NE NAME_*_trans.cs v");
because OMCID , NETYPE, NENAME are variables.

So you need a different expression. Something like:

system( ("rm -f /path/" + OMCIDE + '_' + NETYPE + '_' +
NENAME + "_*_trans.swv") .c_str() ) ;

i tried with this as following , but not working :(
string omcid;
string netype ;
string nename ;
//some stuff to get values inside the string variables

TrDebug<<"omcid "<<omcid<<e ndl; // here i printed the value it is
coming correct
TrDebug<<"netyp e"<<netype<<end l;// here also
TrDebug<<"nenam e"<<nename<<end l; // here also
system( ("rm -f /path/" + omcid + '_' + netype + '_' + nename +
"_*_trans.csv") .c_str() ) ;

And how is it not working? It should compile (as long as one of
the first two operands in the sequence of +'s is a string, which
seems to be the case). What does system() return? Otherwise:
try redirecting the output of rm (both standard out and standard
error) to a file, and see what it contains.

--
James Kanze (GABI Software) email:james.kan ze@gmail.com
Conseils en informatique orientée objet/
Beratung in objektorientier ter Datenverarbeitu ng
9 place Sémard, 78210 St.-Cyr-l'École, France, +33 (0)1 30 23 00 34

[aki]

Re: file deletion in a directory with some conditions .

On Aug 4, 6:15 pm, James Kanze <james.ka...@gm ail.comwrote:

On Aug 4, 2:07 pm, aki <akhileshrawat. ..@gmail.comwro te:
>
>
>

On Aug 1, 11:17 pm, James Kanze <james.ka...@gm ail.comwrote:

On Aug 1, 6:20 pm, aki <akhileshrawat. ..@gmail.comwro te:
On Aug 1, 12:23 pm, Michael DOUBEZ <michael.dou... @free.frwrote:
[...]
Well for system command path cannot be a variable,
Of course it can be. It can be an expression, just like any
other function argument.
i tested it. as this will not work
system("rm -f /path/OMCID_NETYPE_NE NAME_*_trans.cs v");
because OMCID , NETYPE, NENAME are variables.
So you need a different expression. Something like:
system( ("rm -f /path/" + OMCIDE + '_' + NETYPE + '_' +
NENAME + "_*_trans.swv") .c_str() ) ;

i tried with this as following , but not working :(
string omcid;
string netype ;
string nename ;
//some stuff to get values inside the string variables
TrDebug<<"omcid "<<omcid<<e ndl; // here i printed the value it is
coming correct
TrDebug<<"netyp e"<<netype<<end l;// here also
TrDebug<<"nenam e"<<nename<<end l; // here also
system( ("rm -f /path/" + omcid + '_' + netype + '_' + nename +
"_*_trans.csv") .c_str() ) ;

>
And how is it not working? It should compile (as long as one of
the first two operands in the sequence of +'s is a string, which
seems to be the case). What does system() return? Otherwise:
try redirecting the output of rm (both standard out and standard
error) to a file, and see what it contains.
>

hii ,

i cross checked again ...
path was not correct ..
corrected and now its working fine...;)

Thanks all of u ...for your valuable feedback...

regards
aki

--
James Kanze (GABI Software) email:james.ka. ..@gmail.com
Conseils en informatique orientée objet/
Beratung in objektorientier ter Datenverarbeitu ng
9 place Sémard, 78210 St.-Cyr-l'École, France, +33 (0)1 30 23 00 34