OpenForum RSS: �� bash

� �� BSDA �� (angra)

Mon, 01 Jun 2009 20:52:27 GMT

>|*) for �� . back-ticks �� (�� ~130� �� ).

��, �� , �� . �� while read � ��, �� . �� bc(�� ) � �� , �� (�� ).
�� .

� �� BSDA �� (Andrey Mitrofanov)

Mon, 01 Jun 2009 13:25:59 GMT

>�� bash �� , �� , ��
>�� bc, ��
>�� bc ��. �� :
>for s in 1;do for i in `cat text` ;do echo -n
>"$i"+;done;echo 0;done |bc

|*) for �� . back-ticks �� (�� ~130� �� ).
�ӣ "�� ": awk ��, �� bc �� ...

$ cat ./x6
#!/bin/bash

n=10
for((i=1;i<8;i++)); do
yes | head -$n |sed 's!y!10000000000001!' | (\
[B]{ echo "sum=0"; sed 's/.\+/sum+=\0/'; echo 'print sum," "'; } | /usr/bin/time bc[/B]

) 2>&1 |awk '{print '"$((${#n}-1))"'" "$1" "$2" "$4" "$5;exit}'
n="${n}0"
done
$ ./x6
1 100000000000010 0.00user 0:00.00elapsed 0%CPU
2 1000000000000100 0.00user 0:00.00elapsed 200%CPU
3 10000000000001000 0.00user 0:00.00elapsed 100%CPU
4 100000000000010000 0.03user 0:00.05elapsed 61%CPU
5 1000000000000100000 0.36user 0:00.63elapsed 57%CPU
6 10000000000001000000 3.8

�� bash (angra)

Sun, 31 May 2009 04:28:42 GMT

�� bash �� , �� , �� bc, �� bc ��. �� :
for s in 1;do for i in `cat text` ;do echo -n "$i"+;done;echo 0;done |bc

�� bash (anonymous)

Sat, 30 May 2009 02:01:56 GMT

>�� .

�� bc.

�� bash (Andrew)

Fri, 29 May 2009 19:57:18 GMT

>[�� ]
>sum=0
>for num in `cat ./total.bytes`; do
> sum=`echo $sum+$num | bc`
>done
>echo $sum
>$ ./count
>8510038836
>�� . �� , ��
>�� . � �� bc
>�� .

��.... �� bc, �� . � �� , �� man bc �� , �� .

�, ��, '��' �� :/ (Andrey Mitrofanov)

Thu, 28 May 2009 14:22:14 GMT

>bc <(echo 'sum=0;while((val=read())!=0){sum+=val}; sum')

�� Debian 4.0 "Etch" �� Debian 5.0 "Lenny" (bc 1.06-20 -> 1.06.94-3, bash 3.1dfsg-8 -> 3.2-4 � ��.) � �� . "=read())!=0" � Σ� ��, ��, �� "while read val; do" � bash-�: �� 0 �� . � � Lenny � �� ...

�� bash (krigs)

Sun, 24 May 2009 23:31:41 GMT

>[�� ]
>-1836137862
>311345785
>-1836137864
>-1444126085
>-710494993
>1436988654
>-1190184973
>
>�.� �� , � �� -�� -��
>�� ?

�� (http://house.hcn-strela.ru/BSDCert/BSDA-course/index.html) - �� :)

$ cat count
#!/bin/sh
sum=0
for num in `cat ./total.bytes`; do
sum=`echo $sum+$num | bc`
done
echo $sum
$ ./count
8510038836
�� . �� , �� . � �� bc �� .

�� bash (0dmin)

Tue, 03 Mar 2009 20:00:32 GMT

>>�, � �� bash ��, �� !�� sh ��
>�� sh � freebsd :))

�� POSIX Shell.

PS: � �� - �� _��!_ bash ��ף�� bash'�� sh :)

�� bash (vic)

Tue, 03 Mar 2009 15:12:22 GMT

� �� %d ��

OpenForum RSS: ������� ������ ����� �� bash

� ����������������� BSDA ������ ����� (angra)

� ����������������� BSDA ������ ����� (Andrey Mitrofanov)

������� ������ ����� �� bash (angra)

������� ������ ����� �� bash (anonymous)

������� ������ ����� �� bash (Andrew)

�, ������, '������' �� �������� :/ (Andrey Mitrofanov)

������� ������ ����� �� bash (krigs)

������� ������ ����� �� bash (0dmin)

������� ������ ����� �� bash (vic)