10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
i've got the following output file:
170724_1600 | SYSTEM | 449 | 282 | 167 | 62
170724_1600 | CCS_SCP_DATA | 200 | 88 | 112 | 44
170724_1600 | CCS_SCP_SUBS_I | 2001 | 1751 | 250 | 87
170724_1600 | UIS_CDR_INDEX | 2001 | 1 | 2000 | 0
170724_1600 | LCP_INDEX | 200 | 5 | 195 | 2... (4 Replies)
Discussion started by: nms
4 Replies
2. Shell Programming and Scripting
Hello All,
I'm writing a Bash Script and in it I execute a piped command within a Function I wrote and I can't seem to redirect the
stderr from the 1st pipe to stdout..?
I'm setting the output to an Array "COMMAND_OUTPUT" and splitting on newlines using this --> "( $(...) )". By putting... (6 Replies)
Discussion started by: mrm5102
6 Replies
3. Programming
Hi,
Mentioned in Stevens & Rago "Advanced Programming in the UNIX"
I don't understand why must flush all line-buffered output streams when (a)an unbuffered or (b)a line-buffered stream require data from kernel? (2 Replies)
Discussion started by: Edward114
2 Replies
4. Shell Programming and Scripting
I have a command that gives me the output below:
JAVA_HOME = C:/jdk1.5.0_11
Broker Performance Report for server 'app1'
RMI_URL = rmis://
Parameter Kintana ItgDS DashboardDS
---------------------------- ------- ----- -----------
Connections count 41 ... (4 Replies)
Discussion started by: bwiebe
4 Replies
5. Shell Programming and Scripting
Hello,
We have an oracle database running on a Linux host (RHEL5)...I'm trying to run Oracle dbv (database verify utility) and capture its output to a file using the following syntax but the standart output does NOT get redirected to the file...
dbv blocksize=32768 ... (2 Replies)
Discussion started by: luft
2 Replies
6. Shell Programming and Scripting
Hi all, I'd like to capture the output from the 'top' command to monitor my CPU and Mem utilisation.Currently my command isecho date
`top -b -n1 | grep -e Cpu -e Mem` I get the output in 3 separate lines.Tue Feb 24 15:00:03
Cpu(s): 3.4% us, 8.5% sy .. ..
Mem: 1011480k total, 226928k used, ....... (4 Replies)
Discussion started by: new2ss
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7. Shell Programming and Scripting
Hi,
I'm new to ksh - unix platform. I'm writing a small script which will search my current directory and will search for file names which it takes input from the users.
Here is the code I'm having.
1 #!/bin/ksh
2 echo "enter a file name to be searched in the current dir : "
3 read... (1 Reply)
Discussion started by: avik
1 Replies
8. UNIX Desktop Questions & Answers
ie: man cat
....
- u The output is not buffered (3 Replies)
Discussion started by: Xcislav
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9. UNIX for Dummies Questions & Answers
Hi
I have a C++ program that generates a lot of log information on the console, I need this output (printed using printf function) to go to a file since I will use crontab to schedule the job.
I know I can do this:
myprog > myfile
but I don't know how to enter this in crontab.
I use... (3 Replies)
Discussion started by: GMMike
3 Replies
10. Shell Programming and Scripting
I have the following line in my script:
$sftpcmd $rmthost <<COMMANDS>> $sftplog 2>&1
For some reason this is not capturing the errors from sftp, they go to the file attached to the cron entry
ie
mm hh dd MM * /myscript > cron.out
any idea why?
digital unix 4.0d (6 Replies)
Discussion started by: MizzGail
6 Replies
setbuf(3s) setbuf(3s)
Name
setbuf, setbuffer, setlinebuf, setvbuf - assign buffering to a stream
Syntax
#include <stdio.h>
void setbuf(stream, buf)
FILE *stream;
char *buf;
void setbuffer(stream, buf, size)
FILE *stream;
char *buf;
int size;
void setlinebuf(stream)
FILE *stream;
int setvbuf(stream, buf, type, size)
FILE *stream;
char *buf;
int type; size_t size;
Description
The three types of buffering available are unbuffered, block buffered, and line buffered. When an output stream is unbuffered, information
appears on the destination file or terminal as soon as written; when it is block buffered many characters are saved up and written as a
block; when it is line buffered characters are saved up until a new line is encountered or input is read from stdin. The routine may be
used to force the block out early. Normally all files are block buffered. For further information, see A buffer is obtained from upon the
first or on the file. If the standard stream stdout refers to a terminal it is line buffered. The standard stream stderr is always
unbuffered.
The routine is used after a stream has been opened but before it is read or written. The character array buf is used instead of an auto-
matically allocated buffer. If buf is the constant pointer NULL, input/output will be completely unbuffered. A manifest constant BUFSIZ
tells how big an array is needed:
char buf[BUFSIZ];
The routine, an alternate form of is used after a stream has been opened but before it is read or written. The character array buf whose
size is determined by the size argument is used instead of an automatically allocated buffer. If buf is the constant pointer NULL,
input/output will be completely unbuffered.
The routine is used to change stdout or stderr from block buffered or unbuffered to line buffered. Unlike and it can be used at any time
that the file descriptor is active.
The routine may be used after a stream has been opened but before it is read or written. Type determines how stream will be buffered.
Legal values for type, defined in stdio.h are:
_IOFBF causes input/output to be fully buffered.
_IOLBF causes output to be line buffered; the buffer will be flushed when a new line is written, the buffer is full, or input is
requested.
_IONBF causes input/output to be completely unbuffered.
If buf is not the NULL pointer, the array it points to will be used for buffering, instead of an automatically allocated buffer. The size
specifies the size of the buffer to be used. The constant BUFSIZ in <stdio.h> is suggested as a good buffer size. If input/output is
unbuffered, buf and size are ignored.
By default, output to a terminal is line buffered and all other input/output is fully buffered.
A file can be changed from unbuffered or line buffered to block buffered by using For further information, see A file can be changed from
block buffered or line buffered to unbuffered by using followed by with a buffer argument of NULL.
Restrictions
The standard error stream should be line buffered by default.
The and functions are not portable to non 4.2 BSD versions of UNIX.
See Also
malloc(3), fclose(3s), fopen(3s), fread(3s), getc(3s), printf(3s), putc(3s), puts(3s).
setbuf(3s)