Imi cer suze pt. problemele avute cu e-mailurile trimise anterior.
Banuiesc ca subiectul e 'expirat' .... totusi mailul trimis era (=20
sperand sa il mai ajute cu ceva pe cel care a intrebat ):
Solutii ar mai fi : ls -lt *.jpg | awk '{x +=3D $5}END{print "Tot size: =
", x}'
Daca se doreste doar scripting , intradevar solutia=20
echo $(find . -type f -name ".*jpg" -printf "%s+")0 | bc
este cea mai rapida. Dar pt. numar mare de fisiere, poate ar fi bine sa =
scrii 10 randuri in C. Nu se compara din punct de vedere al vitezei.
[EMAIL PROTECTED]:~/testsize/testfiles> ls -lt *.lic | wc -l
4207
[EMAIL PROTECTED]:~/testsize/testfiles> time ./msize
Tot. size =3D 8313713 bytes
real 0m0.015s
user 0m0.000s
sys 0m0.020s
[EMAIL PROTECTED]:~/testsize/testfiles> time ls -lt *.lic | awk '{x +=3D =
$5}END{print "Tot size: ", x}'
Tot size: 8313713
real 0m0.068s
user 0m0.060s
sys 0m0.020s
[EMAIL PROTECTED]:~/testsize/testfiles> time echo $(find . -type f -name =
"*.lic" -printf "%s+")0 | bc
8313713
real 0m0.042s
user 0m0.010s
sys 0m0.020s
[EMAIL PROTECTED]:~/testsize/testfiles>
Functia in C care vine utilizata :
int getSize(char* root, char* ptn)
{
DIR *dp;
struct dirent* den;
struct stat fstat;
int rsize=3D0,dsize=3D0;
dp=3Dopendir(root);
if (dp !=3DNULL) {
while ( den =3D readdir(dp) ) {
stat ( den->d_name,&fstat);
if ( S_ISDIR (fstat.st_mode) && !strstr(den->d_name,".") =
) rsize +=3D getSize(den->d_name,ptn);
else if ( !fnmatch(ptn,den->d_name,FNM_PATHNAME) ) rsize =
+=3D fstat.st_size; }
closedir (dp) ;
return rsize;
}
else return 0;
}
Mihai Maties wrote:
>On Thursday 27 May 2004 19:33, Adrian Popescu wrote:
> =20
>
>>On Thursday 27 May 2004 17:45, Dan Uscatu wrote:
>> =20
>>
>>>problema: sa se calculeze suma dimensiunilor tuturor fisierelor de un
>>>anumit tip (de exemplu .jpg) din directorul curent.
>>> =20
>>>
>>stat -c %s *.jpg | awk '{x=3Dx+$1} END {print x}'
>> =20
>>
>
>Orice solutie bazata pe faptul ca te astepti ca bash-ul sa-ti faca =
"expand" la=20
>* din linia de comanda are un mare inconvenient: daca ai multe fisiere =
atunci=20
>primesti un foarte frumos: "argument list too long".
>
>Bottom line(s):
>- solutia de mai sus e ok, in cazul in care ai putine fisiere (cu nume =
nu=20
>foarte lungi)
>- daca ai in vedere ca fisierele ar putea fi si in subdirectoare, =
gasirea=20
>lungimii lor este recomandat a fi facuta cu find
>- parsarea output-ului lui "ls-lR" e iarasi destul de consumatoare de =
timp in=20
>cazul unui numar mare de fisiere
>
>Deci solutia optima ar fi:
>
>echo $(find . -type f -name ".*jpg" -printf "%s+")0 | bc
>
>
>Mihai
>
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>
>
> =20
>
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