12-15-2010
Hi,
U1=`echo siva | tr '[a-z]' '[A-Z]'`
U2="${U1}V"
Assigning value to variable (U1, U2) as shown above is not working in the batch script. How to write the same in batch script ?
With Regards
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LEARN ABOUT DEBIAN
iob_write
iob_write(3) Library Functions Manual iob_write(3)
NAME
iob_write - send I/O batch through callback
SYNTAX
#include <iob.h>
typedef int64 (*io_write_callback)(int64 s,const void* buf,uint64 n);
int64 iob_write(int64 s,io_batch* b,io_write_callback cb);
DESCRIPTION
iob_write sends the (rest of) b through the callback cb, passing s as first argument. cb is expected to behave like io_trywrite(2).
This interface is intended to send an I/O batch through a filter, for example to encrypt or compress it. If you just want to send an I/O
batch to a socket, use iob_send instead.
iob_write returns the number of bytes written, 0 if there were no more bytes to be written in the batch, -1 for EAGAIN, or -3 for a perma-
nent error (for example "connection reset by peer").
The normal usage pattern is using io_wait to know when a descriptor is writable, and then calling iob_write until it returns 0, -1 or -3.
If it returns 0, terminate the loop (everything was written OK). If it returns -1, call io_wait again. If it returned -3, signal an
error.
NOTE
iob_write will continue to call your callback until it returns an error. So if you are in a state machine, for example a web server using
this for SSL support, make sure to write at most n bytes at a time (e.g. 64k) and the next time you are called return -1. Otherwise
iob_write might not return until the whole file is served.
SEE ALSO
iob_send(3)
iob_write(3)