Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: How to define multiple environment variables in a shell script?
Top Forums UNIX for Beginners Questions & Answers How to define multiple environment variables in a shell script? Post 303045906 by sea on Friday 17th of April 2020 04:11:02 PM
Old 04-17-2020
You're using find to search directories, nice.
But then you're using the variable without checking if it's has one , none or more results.

Further, I assume that you want the variable $user_name to actualy contain (just) the "<username>", and not the string "username + <username>".
This said, you might want to take care of that, afterwhich you might want to use something like this:
Code:
if [[ -n "$user_name" ]]
then    export NAME=$user_name
else    echo "<user_name> is empty"
        # If it is within a script:
        #exit 1
fi

As the string might become empty after removing the found string pattern from it's content ("username + <username>"), if it even finds anything - as in your current case.
This said, you might want to make sure where your find starts from.

I would also suggest to take care of multiple finds (tempfiles) within a a for loop.
This is my suggested handling for all dynamic (find, locate, *, ls, which, etc) variables.

Hope this helps
Last edited by sea; 04-17-2020 at 05:18 PM..
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

shell script help: sorting, incrementing environment variables and stuff

First: me == noob. Whats a good resource for shell script info cause I'm having trouble finding good info. I'm writing a shell script to automate the setup of a flash 'page flip'. My current code is below. the page flip takes an xml file of format <content> <pages... (1 Reply)
Discussion started by: secoif
1 Replies

2. Shell Programming and Scripting

problem accessing Multiple Variables from C Program to a Shell script

program name--test #!/bin/bash output1=`/home/user/a.c` output2=`/home/user/a.c` k=`$output1 + 1` m=`$output2 + 1` echo $k echo $m --------------------------------------------------------------------------- prgram name--a.c #include<stdio.h> int main() (1 Reply)
Discussion started by: sameworld1980
1 Replies

3. Emergency UNIX and Linux Support

Problem setting environment variables from script

Hi all! I know that environment variables can be set on the .bashrc file, but I need to set them from a sh script. I saw a lot of websites that teach this but it doesn't work for me. #!/bin/sh DEKTOP=$DESKTOP=:/home/rrodrigues/Desktop export DESKTOP if I do echo $DESKTOP returns me... (10 Replies)
Discussion started by: ruben.rodrigues
10 Replies

4. UNIX for Dummies Questions & Answers

Define variables with UNIX script

oopps! I Meant "Define Variables within a UNIX Script" What would be the best way to define a variable in a unix shell script so anyone who views this script doesn't know what value is assigned to that variable. some other location... a="/usr/lib/fileA" Unix script... sed... (5 Replies)
Discussion started by: macastor
5 Replies

5. Shell Programming and Scripting

environment variables in a sed script file

Hello Everyone I need to create a script file which must append some lines to a target text file, I'm using sed for windows, the script file look like this: { a\ STRINGTABLE DISCARDABLE\ BEGIN\ 5, 150 {a\ #define RC_SHELL, "%ID_SHELL%"\ #define RC_NAME, "%ID_NAME%"\ END } ... (1 Reply)
Discussion started by: edgarvm
1 Replies

6. Shell Programming and Scripting

Using Datastage environment variables in Unix script

Hi All, I am using ETL tool Datastage and is installed on Linux environment. Few environment variables are set in datastage. Now my requirement is to use those environment variables in a unix script. Is there any option I can do it? Sugeestions from people working on datastage and linux... (1 Reply)
Discussion started by: bghosh
1 Replies

7. Shell Programming and Scripting

Using a script to define variables and run multiple other scripts in succession.

I'm pretty new to scripting in Korn shell so please forgive me... What I'm trying to do is to create a script that calls multiple other ksh scripts and defines variables for text files. I need it to define my user defined variables (file paths, date & time stamps, etc that are currently in... (1 Reply)
Discussion started by: bluejwxn8
1 Replies

8. Shell Programming and Scripting

Sourcing .cshrc (C shell) environment variables to bash

I have tried with the following: csh -c 'source ~/.cshrc; exec bash' # works perfectly (cat ~/.cshrc; echo exec bash) | csh # not working And, using sed, I successfully retrieved the environment variables from ~/.cshrc sed -rn 's/setenv\s+(\S+)\s+(.*)$/export \1=\2/p' ~/.cshrc but now... (6 Replies)
Discussion started by: royalibrahim
6 Replies

9. Linux

How to store count of multiple queries in variables in a shell script?

how to store the count of queries in variables inside a filein shell script my output : filename ------- variable1=result from 1st query variable2=result from 2nd query . . . . (3 Replies)
Discussion started by: sanvel
3 Replies

10. Shell Programming and Scripting

How to define two digits variable in shell script?

Dear Shell script Experts, I am working on shell script which is defined here, qsub_seq.csh . The purpose of this script is to read few input files (with defined starting index and last index) and make processing faster over server. For some task, I had 1064 of input files, so I wrote another... (8 Replies)
Discussion started by: emily
8 Replies

LEARN ABOUT HPUX

finger

finger(1)						      General Commands Manual							 finger(1)

NAME

       finger - user information lookup program

SYNOPSIS

       [options] user_name ...

DESCRIPTION

       By default, lists for each user_name on the system:

	      o  Login name,
	      o  Full given name,
	      o  Terminal write status (if write permission is denied),
	      o  Idle time,
	      o  Login time,
	      o  User's home directory and login shell,
	      o  Any plan the user has placed in file in their home directory,
	      o  Project on which they are working from the file also in the home directory,
	      o  office location and phone number (if known),
	      o  last time the user received the mail, and last time the user read the mail.

       Idle time is in minutes if listed as a single integer, hours and minutes if a is present, or days and hours if a is present.  Account names
       as well as first and last names of users are accepted.

       can also be used to list users on a remote machine.  The format for user_name is user_name@host.  If user_name is not specified, the remote
       system (HP-UX or non-HP-UX) uses its default standard format for listing user information.

   Options
       recognizes the following options:

	      Suppress printing the user's home directory and shell.

	      Suppress printing the header that is normally printed
			in a short-format printout.

	      Suppress printing the
			file in a long-format printout.

	      Force ``idle'' output format.
			Similar to short format except that only the login name, terminal, login time, and idle time are printed.

	      Force long output format.

	      Match arguments only on user name.

	      Suppress printing of the
			files

	      Force quick output format.
			Similar to short format except that only the login name, terminal, and login time are printed.

	      Print the user's host name.

	      Force short output format.

	      Suppress printing the full name in a short-format printout.

WARNINGS

       Only the first line of the file is printed.

AUTHOR

       was developed by the University of California, Berkeley.

FILES

       who file
       last login file
       for users names, offices, ...
       plans
       projects
       mail directory

SEE ALSO

       chfn(1), who(1), utmpd(1M).

																	 finger(1)
All times are GMT -4. The time now is 04:58 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy