Hi Guys,
I was just wondering if anybody can help me with this problem.
OK, how we can get a value back from PL/SQL Script (not stored procedure/function)
See the below example: (for example aaa.sh)
#!/bin/ksh
VALUE=`sqlplus -s user/password@test_id <<EOF
@xxx.sq
EOF`
echo $VALUE
... (7 Replies)
hi all
my system is linux red hat
i have a script that runs some object .
the object return some code to the system
i see the code by writing echo $?
i want to ask in the script if $? equals 14
how shell is do that in the script
thanks (3 Replies)
Hi All,
Can anyone please let me know the syntax / how to pick up the Return Code ( RC) from the mailx command and return it to SAS uisng 'system()' function and '${?}'.
I am in a process to send the mail automatically with an attachment to bulk users. I have used 'Mailx' and 'Unencode'... (0 Replies)
Hi, I have a question:
the script A run in the HostA call the script B on the HostB:
ex.. ksh:B
.......
........
........ remsh HostB ec........
......
......
the prog.B on the host B make more function but the last command is echo of srting : ex
ksk script B
....
...... (0 Replies)
I have two text files, each of then only containing ONE line and NO carraige return or white space at the end...how do I echo both of these text files to the screen without putting an extra line? I want to do this from the command line.
file1.txt:
this is file1.txt 1
file2.txt:
this is... (4 Replies)
Hi Guys,,
I am having a unix script which is running the DB2 Insert command.
For the insert command, there were no records to be updated.
SQL0100W No row was found for FETCH, UPDATE or DELETE; or the result of a
query is an empty table. SQLSTATE=02000
+ + echo 1
STAGE_RC=1
+ ]
... (6 Replies)
In a Ksh functions, when you have both echo and return respectively - what does it do. E.g.
Func B ()
{
.....
{
.....
echo $Varaible
}
Return 0
}
Func A ()
{
$Var1 = Func B()
....
....
} (6 Replies)
Hi,
I am wondering how I can check the return value of all commands in a pipe such as
gzip -dc file.gz | sort -u > output.txt
If I run this sequence in bash and check $?, I get the return status from sort. But I want to know if the initial gzip failed.
Similarly for longer pipe chains,... (6 Replies)
I want to try the unix pipe, the command is like this:
echo new | find .
the standard output of the echo should be "new", then I guess find command will use this output as input to find the file named "new". But the output is all the file names in my current dir, the last line is "echo: write... (5 Replies)
I have this code that sometimes return a false value and the code inside the if statement gets executed and error out. Any idea why? thanks.
So I set a debug and see what the value for $ScriptElapsedTime
Here is the value I got ScriptElapsedTime='03:20'. Base on this value the if... (10 Replies)
Discussion started by: nugent
10 Replies
LEARN ABOUT MINIX
pipe
PIPE(2) System Calls Manual PIPE(2)NAME
pipe - create an interprocess communication channel
SYNOPSIS
#include <unistd.h>
int pipe(int fildes[2])
DESCRIPTION
The pipe system call creates an I/O mechanism called a pipe. The file descriptors returned can be used in read and write operations. When
the pipe is written using the descriptor fildes[1] up to PIPE_MAX bytes of data are buffered before the writing process is suspended. A
read using the descriptor fildes[0] will pick up the data.
PIPE_MAX equals 7168 under Minix, but note that most systems use 4096.
It is assumed that after the pipe has been set up, two (or more) cooperating processes (created by subsequent fork calls) will pass data
through the pipe with read and write calls.
The shell has a syntax to set up a linear array of processes connected by pipes.
Read calls on an empty pipe (no buffered data) with only one end (all write file descriptors closed) returns an end-of-file.
The signal SIGPIPE is generated if a write on a pipe with only one end is attempted.
RETURN VALUE
The function value zero is returned if the pipe was created; -1 if an error occurred.
ERRORS
The pipe call will fail if:
[EMFILE] Too many descriptors are active.
[ENFILE] The system file table is full.
[ENOSPC] The pipe file system (usually the root file system) has no free inodes.
[EFAULT] The fildes buffer is in an invalid area of the process's address space.
SEE ALSO sh(1), read(2), write(2), fork(2).
NOTES
Writes may return ENOSPC errors if no pipe data can be buffered, because the pipe file system is full.
BUGS
Should more than PIPE_MAX bytes be necessary in any pipe among a loop of processes, deadlock will occur.
4th Berkeley Distribution August 26, 1985 PIPE(2)