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 DEBIAN
fgetty
FGETTY(8) System Administrator's Manual FGETTY(8)NAME
fgetty - a small getty for linux
SYNOPSIS
fgetty tty [--noclear] [--long-hostname]
DESCRIPTION
The command fgetty is normally invoked by init(8), opens a tty port, prompts for a login name and invokes the /bin/login command.
OPTIONS --noclear makes fgetty not clear the screen before displaying the login prompt.
--long-hostname makes fgetty display the full hostname in the login prompt.
FILES
/etc/issue printed before the login prompt
/etc/inittab init(8) configuration file
/var/run/utmp the system status file
ISSUE ESCAPES
The issue-file (/etc/issue or the file may contain certain escape codes to display the system name, date and time etc. All escape codes
consist of a backslash () immediately followed by one of the letters explained below.
d the current date. (eg: 2002-01-19)
s the system name, the name of the operating system. (eg: Linux)
l the name of the current tty line. (eg: tty3)
m the architecture identifier of the machine (eg: i586)
n the nodename of the machine, also known as the hostname. (eg: sirius)
o the domainname of the machine. (eg: (none))
r the release number of the OS. (eg: 2.4.3-i)
t the current time. (eg: 14:51:51)
u the number of current users logged in. (eg: 4)
U the string "1 user" or "<n> users", where <n> is the number of current users logged in. (eg: 4 users)
v Insert the version of the OS. (eg: #2 Fre Jan 18 23:05:45 CET 2002)
ENVIRONMENT VARIABLES
HOST is set to your hostname
TERM is set to linux
TTY is set to the current tty line
RETURN VALUES
1 could not chown/chmod tty device
3 could not open tty device
4 not a typewriter
5 vhangup failed
6 could not open tty (can't happen)
7 dup failed
8 could not exec login
9 read returned an unexpected error
10 unprintable character in login name
11 login name too long (>40)
13 user name started with a dash
23 received SIGQUIT
AUTHOR
Felix von Leitner <felix-fgetty@fefe.de>
Homepage: http://www.fefe.de/fgetty/
fgetty 2002-01-19 FGETTY(8)
06-14-2014
