Hi,
I have small script written in korn shell. When it is called from different script, its dumping core, but no core dump when we run it standalone.
And its not dumping core if we run the script using "/bin/sh" instead of "ksh"
Can some body please help me how to resolve this issue.
... (9 Replies)
Unix gurus,
I have a piece of code as below.
] && INST="${ORACLE_SID}" || INST="${TWO_TASK}"
I know that the above code can be used in lieu of an IF construct. I also know that the above code can be extended for the "true" condition to include more than one command (as below):
... (8 Replies)
Hi everyone,
I`ll try to be most clear I can explaining my help request.
I have 2 folders
Folder A-->This folder receives files through FTP constantly
Folder B-->The files from Folder A are unzipped and then processed in Folder B
Sometimes Folder A doesn`t contain all... (2 Replies)
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
Hi,
Could anyone please shed some light on the following script lines and what is it doing as it was written by an ex-administrator?
cat $AMS/version|read a b verno d
DBVer=$(/usr/bin/printf "%7s" $verno)
I checked that the cat $AMS/version command returns following output:
... (10 Replies)
While going through a script, i came across few syntax which I am not aware of what they exactly means.
@ cnt = 1
@ num_all = `echo $var`
What is the significance of "@" here. What is it called? (3 Replies)
I want to be able to take a file name and then use sedto paste that text into the file.
I believe I know how to do the latter portion of pasting into the file at the location I want, but I do not know how to "copy" the file name to the "clipboard" for pasting.
Ideally I want to be able to... (1 Reply)
Hi Guys,
From past some days, I am getting an error in /var/adm/messages which is as shown below.
XXXXX02:/# cat /var/adm/messages |tail
Sep 16 15:28:14 XXXX02 EV_AGENT: Agent Main --Estream construct failed. Err: EMULSocket::recv()
Sep 16 15:31:49 XXXX02 EV_AGENT: Agent main --... (2 Replies)
How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address
and column 3 contains “cc” e-mail address to include with same email.
Sample input file, email.txt
Below is an sample code where... (2 Replies)
Hello.
System : opensuse leap 42.3
I have a bash script that build a text file.
I would like the last command doing :
print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt
where :
print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies
LEARN ABOUT POSIX
stderr
STDIN(P) POSIX Programmer's Manual STDIN(P)
NAME
stderr, stdin, stdout - standard I/O streams
SYNOPSIS
#include <stdio.h>
extern FILE *stderr, *stdin, *stdout;
DESCRIPTION
A file with associated buffering is called a stream and is declared to be a pointer to a defined type FILE. The fopen() function shall cre-
ate certain descriptive data for a stream and return a pointer to designate the stream in all further transactions. Normally, there are
three open streams with constant pointers declared in the <stdio.h> header and associated with the standard open files.
At program start-up, three streams shall be predefined and need not be opened explicitly: standard input (for reading conventional input),
standard output (for writing conventional output), and standard error (for writing diagnostic output). When opened, the standard error
stream is not fully buffered; the standard input and standard output streams are fully buffered if and only if the stream can be determined
not to refer to an interactive device.
The following symbolic values in <unistd.h> define the file descriptors that shall be associated with the C-language stdin, stdout, and
stderr when the application is started:
STDIN_FILENO
Standard input value, stdin. Its value is 0.
STDOUT_FILENO
Standard output value, stdout. Its value is 1.
STDERR_FILENO
Standard error value, stderr. Its value is 2.
The stderr stream is expected to be open for reading and writing.
RETURN VALUE
None.
ERRORS
No errors are defined.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
fclose() , feof() , ferror() , fileno() , fopen() , fread() , fseek() , getc() , gets() , popen() , printf() , putc() , puts() , read() ,
scanf() , setbuf() , setvbuf() , tmpfile() , ungetc() , vprintf() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdio.h>,
<unistd.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE
and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
IEEE /The Open Group 2003 STDIN(P)