Hi,
can someone explain how this aliases work:
I mean, I know what it does, but I don't know how
- what is \!:$ and \!:1
- how do it used the && and ||
- what it does with status variable?
thanks
Last edited by Corona688; 04-15-2015 at 01:14 PM..
How can I redirect all stdout and stderr messages from a command to /dev/null (or to a file if need be) except messages that start with the word 'foo'? Messages that start with 'foo' need to be displayed in real time (i.e., when they are sent to stdout/stderr by the command). Thanks. (5 Replies)
Hello all,
I am currently try to learn the linux operating system as well as some bash programming. I have come across some online course work which has been very helpful, I have been working through some assignments and since I have no teacher to ask I have come to you experts.
So the... (6 Replies)
i write a shell program and i execute that after i made a bin directiry in my home directory(i didnt give any permissions)
now i change to other directory.then i execute it bit it is saying " no such a file or directory"
can any one help me please (2 Replies)
hi and sorry for crossposting...
I have data, the first column is the date ("2011 02 03 12 45") and follow I have the measurements . What I would like to do is:
to read the data line by line and write the data of "today" in a new file and "yesterday" as well in another file, separated by... (2 Replies)
Hello,
I am processing data. In the first column there is the date ("2011 02 03 12 45") separated by space and follow I have the measurements.I have several days in one file. What I would like to do is:
to read the data line by line and write the data of "today" in a new file and "yesterday" as... (13 Replies)
Hello,
I am new to shell scripting. I have a question I would greatly appreciate any suggestions on. I am writing a ksh script that will launch bin files. The files are owned root and the application runs under root. The application administrators do not get root access. The script is intended... (1 Reply)
1. Create a directory script (project_dir.sh)
· Write a script in your home directory to create a subdirectory called “PROJECT<99>” within your home directory on the Ubantu/Linux server. <99> is your project number (e.g. 01,02,03, ... 15).
· The script must test whether... (1 Reply)
My professor has given me a couple of functions that I am to use to accomplish the task of replacing spaces in file and/or directory names with hyphens.
(i.e. A B/C D/E F and you want to rename that to A B/C D/E-F would be an example of changing the file and leaving the directories)
These are... (1 Reply)
Hello,
I am new to Linux and studying to become a Unix System Admin. I am taking a course in which I was practicing creating a bash script to ping a particular IP address. The script can be found below:
#/bin/bash
echo "Enter the IP address"
read ip
if
then
ping -c 1 $ip
if ;... (3 Replies)
Discussion started by: shah9250
3 Replies
LEARN ABOUT OSF1
aliases
aliases(4) Kernel Interfaces Manual aliases(4)NAME
aliases - Contains alias definitions for the sendmail program
SYNOPSIS
/var/adm/sendmail/aliases
DESCRIPTION
By default, the aliases file contains the required aliases for the sendmail program. Do not delete these defaults because they are needed
by the system. This file describes user ID aliases used by the sendmail command. It is formatted as a series of lines in the form: name:
name_1, name_2, name_3,..
The name is the name that needs an alias, and the name_n are the aliases for that name. Lines beginning with white space are continuation
lines. Lines beginning with a # (number sign) are comments.
You can define an alias only on local names. Duplicate addresses are removed and no message is sent to any person more than once. For
example, if name_1 defines an alias that is name_2 and name_2 defines an alias that is name_1, sendmail does not send the same message back
and forth. Local and valid recipients who have a .forward file in their home directory have messages forwarded to the list of users
defined in that file.
This is only the raw data file; the actual information that defines the aliases is placed into a binary format in the files /var/adm/send-
mail/aliases.dir and /var/adm/sendmail/aliases.pag using the newaliases command. For the change to take effect, the newaliases command
must be executed each time the aliases file is changed.
The sendmail program also supports sending messages to programs or appending a message to a file. See the sendmail(8) reference page for
further information.
Special Aliases
Directs error messages that occur when sending to aliasname back to address.
RESTRICTIONS
Aliases for sendmail use the dbm(3) database format for faster lookups. A single alias cannot exceed 1,000 characters. To work around this
restriction, you can chain together aliases. For example: alias-list: ali1, ali2, ali3 ali1: name 1, name 2 ... ali2: name n, name n + 1
FILES
Binary aliases file. Binary aliases file.
RELATED INFORMATION
Commands: newaliases(1), forward(4), local.users(4), sendmail(8) delim off
aliases(4)