I am learning shell scripting for the first time. I use AT&T Korn Shell, Version AJM 93u+ 2012-08-01, compiled from source on NetBSD.
So far I have managed to set up what I think is a useful and pleasing shell prompt, which can be seen in the image attached to this post.
The prompt is a multi-line prompt, as follows:
Line 1 (reverse video) shows the TERM variable, together with TTY, SHELL, and the date and time as it was when the prompt was updated.
(The print -f statement formats this line so that the text is right-aligned and the reverse-video bar takes up the whole width of the terminal, even if it is resized. It uses the COLUMNS variable to achieve this.)
Line 2 shows the host I am connected to (obscured for security).
Line 3 shows the job number and current working directory.
Line 4 shows the user name and the prompt itself.
I have just one problem: unless I symlink /bin/ksh93 to /bin/sh (the default shell on NetBSD) I get errors about "bad substitution". I am certain my prompt is causing this problem, but I still don't know enough to say what is wrong. Would somebody be so kind as to look at my PS1 and tell me where I am going wrong, and where I can improve it? I have learned quite a bit about if...then and case statements while learning how to do this prompt, but I am still unclear about brackets, single quotes and double quotes.
The following is the relevant part of my .kshrc file. I have split the PS1 lines for readability but they are all on one line in the file.
I want to be able to run a script on one server, that will spawn another shell which runs some commands on another server..
I have seen some code that may help - but I cant get it working as below:
spawn /usr/bin/ksh
send "telnet x <port_no>\r"
expect "Enter command: "
send "LOGIN:x:x;... (2 Replies)
well i have this code here..and it works fine in kornshell..
#!/bin/ksh
home=c:/..../
input=$1
sed '1,3d' $input > $1.out
line=""
cat $1.out | while read a
do
line="$line $a"
done
echo $line > $1
rm $1.out
however...now i want it just in normal sh mode..how to convert this?... (21 Replies)
My client`s system is an AIX 4.2 and using the Kron shell. I was just wondering if it is possible to have the prompt autocompletion enabled on it without changing shell version.
By autocompletion, I mean to automatically complete the filenames or directories we type in using the Tab key. (2 Replies)
Hi All
I have writing a Korn Shell script to execute it on many of our servers. But some servers don't have Korn Shell installed, they use Borne Shell.
Some operations like calculation don't work :
cat ${file1} | tail -$((${num1}-${num2})) > ${file2}
Is it possible to activate Korn Shell... (3 Replies)
Hello,
I want to connect to Database through shell command line.
Here is my command from putty,
$ sqlplus -S ora/ora@ORA
But I am not able to connact to database.
If this command succed, what is the expected output on shell prompt?
Could you please let me know how to connact to... (3 Replies)
Can anybody help me with this small script , the script works fine and launches the IE from
c:\documents and settings \test\my documents>ksh prompt
$RunURL1.sh
this scitpt works and launches the ie from ksh , but when i schedule it to run the script then i get the error box saying command:1... (2 Replies)
Could some one tell me the difference btw Bourne shell and the Kshell? Which is more flexible and reliable in terms of portability and efficiency. When i type the following command ..
$ echo $SHELL
yields me
/bin/sh
Does this tells me that I am in Bourne shell. If yes, how can i get... (6 Replies)
I'm attempting to set up a two-line prompt using Korn.
This is what I've set up in .kshrc
PS1='$(print -n "`logname`@`hostname`:";if ] then; print -n "~${PWD#$HOME}"; else; print -n "$PWD";fi;print "\n$ ")'
And in .profile,
ENV="$HOME/.kshrc"; export ENV
The hosts that in use are... (10 Replies)
Discussion started by: capnpepper
10 Replies
LEARN ABOUT OPENSOLARIS
disown
disown(1) User Commands disown(1)NAME
disown - ksh93 built-in function to disassociate a job with the current shell
SYNOPSIS
disown [job ...]
DESCRIPTION
The ksh93 disown command prevents the current shell from sending a HUP signal to each of the specified jobs when the current shell termi-
nates a login session.
If job is omitted, disown sends the HUP signal to the most recently started or stopped background job.
OPERANDS
The following operands are supported:
job Specifies the job or jobs on which disown operates.
Specify job as one of the following:
number Refers to a process ID.
-number Refers to a process group ID.
%number Refers to a job number.
%string Refers to a job whose name begins with string.
%?string Refers to a job whose name contains string.
%+ or %% Refers to the current job.
%- Refers to the previous job.
EXIT STATUS
0 Successful completion.
>0 One or more specified jobs does not exist.
EXAMPLES
Example 1 Disowning a Job
The following example disowns job 1:
example% disown %1
AUTHORS
David Korn, dgk@research.att.com
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|Interface Stability |Uncommitted |
+-----------------------------+-----------------------------+
SEE ALSO bg(1), jobs(1), ksh93(1), wait(1), attributes(5)SunOS 5.11 18 Apr 2007 disown(1)
06-14-2014
