To create a custom error message, you may need to test for the error situation and catch it before the system does. Someone else may have a trick to catch system errors and redirect the output. For example,
You can wrap the test in a function (see example 1 below) within an existing script or you can create a separate script (see example 2 below). In the latter case, you can call the script (i.e. mycd) instead of the cd function. Don't forget to set the execute bit on the file.
Example 1. Function:
Example 2. Separate Script:
As for the word count, perhaps if you explain the problem (what do you need to see) rather than the solution (that is not working) we can provide a better way. Word counts of directory listings seems strange to me, but there may be a valid reason.
Hello all,
I would like a message to be displayed on the shell when someone opens up the terminal - something like a welcome msg with date and time. I know how to do this by running the shell commands but dont know how to display it when a user opens up the terminal?
Thanks in advance (27 Replies)
Can anyone point me to the right direction on how to write a simple script that will display a message on any terminal when implemented?
Basically I need it so the script runs at a certain time, say April 30, 2010 and that the message will be displayed to me no matter which terminal I am logged... (2 Replies)
Hi guys,
I have a script that call another, the other displays de message and I can print directly to the flat file, but in one command I am searchig that this message can be displayed in the screen and in the flat file in one command.
I am doing something like this:
var=$(./Example.sh)... (2 Replies)
Hi i'm new to the forum and was hoping someone could help me with the following query.
I do alot of testing and have hundreds of log files output. I have a script (someone else wrote) which finds all the passed and failed logs and puts a number in a column onto a webpage:
e.g:
Pass ... (4 Replies)
Hello
i have to perform a sftp from server "A" to server "B"(remote server).
when i execute the sftp command it prompts for password.
right now we haven't establish the ssh key exchange so we have to dispaly a error message if it prompts for password.
how can i perform it please help (0 Replies)
I have a ksh script (script1) that calls another ksh script (script2). If script2.ksh hangs or takes too long to execute I want script1.ksh to kill the call to script2.ksh and instead just display "Script2 can't run right now". Could someone help me with coding this? (1 Reply)
Hi All,
Would like to ask on how to refrain the message file not exists from display out.
if ; then
When it execute, the OS will throw the error file does not exists
ls: 0653-341 The file COL_*/*.CTL does not exist.
Thanks. (3 Replies)
I'm have a script that I am creating and I want the dmesg command to only show output for the current day and the day before. What would be the command to make this work?
Thanks (8 Replies)
Hi All,
I am working with a XML file.
Below is part for the file.
<Emp:Profile>
<Emp:Description>Admin</Emp:Description>
<Emp:Id>12347</Emp:Id>
</Emp:Profile>
<Emp:Profile>
... (7 Replies)
In the below bash function multiple variants are input and stored in a variable $variant, and each is written to an out file at c:/Users/cmccabe/Desktop/Python27/out.txt stored on a separate line.
# enter variant
phox2b() {
printf "\n\n"
printf "What is the id of the patient getting... (0 Replies)
Discussion started by: cmccabe
0 Replies
LEARN ABOUT OSF1
uac
uac(1) General Commands Manual uac(1)NAME
uac - Unaligned Access Message Control
SYNOPSIS
uac p | s [value]
uac p | s [keyword]
OPTIONS
The following options are used with the uac command: Sets or displays the current option setting for the parent process Sets or displays
the current option setting for the system
The following keywords are used with the p option: Reset the current option settings to the default for the parent process Do not print the
unaligned access warning message for the parent process Do not fix the unaligned access for the parent process Deliver a SIGBUS signal to
the parent process
The following keywords are used with the s option: Reset the current option settings to the default for the system Do not print the
unaligned access warning message for the system
Usually, the parent process is the shell.
DESCRIPTION
Most complex instruction set computers (CISC) can access unaligned data but only at a significantly reduced speed. Most reduced instruc-
tion set computers (RISC) do not attempt to handle unaligned accesses. Instead, they generate an unaligned access trap and let the operat-
ing system handle the fault.
The default action for the operating system when an unaligned access fault occurs is to fix the unaligned access fault and then display a
warning message informing the user process that an unaligned access fault has occurred. The warning message has the following form:
"Unaligned access pid=nnn <prog_name> va=virtual_addr pc=pc_addr". If you want to change the code to prevent the unaligned access faults
from occurring in the future, the warning message gives you the information you need to locate the code causing a fault. (See the Program-
mer's Guide for details on the causes and effects of misaligned data.)
In addition, the default action for the operating system is to not deliver a SIGBUS signal to the parent process when an unaligned access
fault occurs.
These defaults are satisfactory for most users, but some users require a different behavior and want to specify their own Unaligned Access
Control (UAC).
The uac command enables or disables the display of "Unaligned access" messages. The command sets or displays the UAC_NOPRINT, UAC_NOFIX,
and UAC_SIGBUS options, as defined in setsysinfo(2).
If value is not specified, the current option setting is displayed. You can specify value as either 0 (zero) or 1 (one). If value is 0
(zero), the option is turned on and messages are not displayed. If value is 1 (one), the option is turned off and messages are displayed.
Keywords can be used singly, or in any combination. However, the reset keyword overrides any other keywords it is used with.
RESTRICTIONS
You must be superuser to set the system option.
EXAMPLES
Both of the following commands disable messages for the parent process: # uac p 0
# uac p noprint Both of the following commands enable messages for the system: # uac s 1
# uac s reset The following command disables fixing of an unaligned access fault, disables printing a message for an unaligned
access fault to the parent process, and enables delivery of a SIGBUS signal to the parent process: # uac p nofix noprint sigbus
SEE ALSO getsysinfo(2), setsysinfo(2)
Programmer's Guide
uac(1)