Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Problem in understanding export uses
Top Forums Shell Programming and Scripting Problem in understanding export uses Post 302668767 by PikK45 on Tuesday 10th of July 2012 02:45:50 AM
Old 07-10-2012
Your script has errors. Please see jlliagre's post for the corretion.

And after correction,

uname -n ===> Gives you the hostname of the system you are working on. So,
Code:
HOST:=`uname -n`

will contain that hostname.

Now,
Code:
PS1=$(HOST:=`uname -n`)"$ "

means, you are adding an additional symbol $ to the end of the hostname and storing it in the variable PS1

Did this help?
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Beginner export problem

Me dumb. Can't get this to work... #!/bin/sh export JAVA_HOME_BAK=${JAVA_HOME} or #!/bin/sh export JAVA_HOME_BAK=/usr/java or #!/bin/sh export JAVA_HOME_BAK=$JAVA_HOME or #!/bin/sh export JAVA_HOME_BAK $JAVA_HOME etc.... none work. Either i get: "JAVA_HOME_BAK=/usr/java: is not... (1 Reply)
Discussion started by: xplodersuv
1 Replies

2. UNIX for Dummies Questions & Answers

problem with EXPORT

hi, :) I created a main script called "Paymain.prg" ( /proj/paymain.prg) In this script i created two variables as follows MASTER=/HOME/emaster.dbf TRAN=/HOME/etran.dbf Aftre that i exported that two variables EXPORT MASTER TRAN But when i use these two variable in another script calld... (3 Replies)
Discussion started by: ravi raj kumar
3 Replies

3. Shell Programming and Scripting

egrep understanding problem

Hi, Can anyone please let me know the meaning of this line,i am not able to understand the egrep part(egrep '^{1,2}).This will search for this combination in beginning but what does the values in {}signifies here. /bin/echo $WhenToRun | egrep '^{1,2}:$' >/dev/null (1 Reply)
Discussion started by: namishtiwari
1 Replies

4. Shell Programming and Scripting

Problem in scheduling an Export of a table

Hi, I am facing a problem while scheduling an export of a table using cron job. I have written a simple export command inside a shell script test.sh like echo started exp schemaname/temp1234 file= /test/d.dmp tables=per_st log= /test/d.log echo ended I tried scheduling it through... (6 Replies)
Discussion started by: beautifulmind
6 Replies

5. UNIX for Dummies Questions & Answers

Problem with export command

hello all, I know this is a silly question but i have no answer. I have a shell script temp.ksh export value="mynh" echo $value but when i execute the temp.ksh "mynh" is printed but when i give echo $value in the shell after the program is executed, nothing is printed. ... (3 Replies)
Discussion started by: anijan
3 Replies

6. Red Hat

Understanding local access to NFS export

Hello, I've inherited an NFS setup that allows external servers to write to an NFS share on a Centos box. Here is an example line from /etc/exports (there are four entries that only are different based on server IP adress). /exports/foobar... (4 Replies)
Discussion started by: KickstartUF
4 Replies

7. UNIX for Dummies Questions & Answers

Problem understanding Paths

If I don't explain my issue well enough, I apologize ahead of time, extreme newbie here to scripting. I'm currently learning scripting from books and have moved on to the text Wicked Cool Shell Scripts by Dave Taylor, but there are still basic concepts that I'm having trouble understanding. ... (10 Replies)
Discussion started by: Chasman78
10 Replies

8. Shell Programming and Scripting

Problem on understanding the regexp command

Hi all, I'm not clear of this regexp command: regexp {(\S+)\/+$} $String match GetString From my observation and testing, if $String is abc/def/gh $GetString will be abc/def I don't understand how the /gh in $String got eliminated. Please help. Thanks (2 Replies)
Discussion started by: mar85
2 Replies

9. Shell Programming and Scripting

Problem in understanding debugging

Hi i was going through the script debugging technique. below example was given in the book. 1 #!/bin/sh 2 3 Failed() { 4 if ; then 5 echo "Failed. Exiting." ; exit 1 ; 6 fi 7 echo "Done." 8 } 9 10 echo "Deleting old backups,... (11 Replies)
Discussion started by: scriptor
11 Replies

10. Shell Programming and Scripting

Problem with (Understanding) function

I have this code #!/bin/bash LZ () { RETVAL="\n$(date +%Y-%m-%d_%H-%M-%S) --- " return RETVAL } echo -e $LZ"Test" sleep 3 echo -e $LZ"Test" which I want to use to make logentrys on my NAS. I expect of this code that there would be output like 2017-03-07_11-00-00 --- Test (4 Replies)
Discussion started by: matrois
4 Replies

LEARN ABOUT CENTOS

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
All times are GMT -4. The time now is 04:24 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy