Sponsored Content
Full Discussion: Variable names
Top Forums Shell Programming and Scripting Variable names Post 26324 by Bab00shka on Thursday 15th of August 2002 07:31:37 AM
Old 08-15-2002
Variable names

Hi

I have several variables called

var1, var2, var3, var4 and so on.

I would like to examine the contents of the variables using a loop

and a variable called num which equals a figure

eg

num=3

I wanted to do something like

echo $var$num

to display the contents of var3

I probably need to use quotes or eval or something but I'm not quite sure how - can anyone help please?

Thanks
HelenSmilie
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Variable assignment for file names.

I am trying to process error files in selected directories. I can count the files that are there and export the contents to a file for either emailing or printing. The next step is to move the files to a processed directory with the name changed to .fixed as the last extension. for file in... (2 Replies)
Discussion started by: jagannatha
2 Replies

2. UNIX for Dummies Questions & Answers

Variable names

Hi, I have a variable v_iteration which can equal any 3 digit number eg 001 or 926 I would like to dynamically make a new variable name up using this 3 digit number eg v_another_variable_001=fred v_another_variable_926=joe The following are examples of what I have tried ... (2 Replies)
Discussion started by: Bab00shka
2 Replies

3. Shell Programming and Scripting

awk computed variable names

Is there a way to do make-style computed variable names in awk? e.g. in make foo = bar bar = wocket I can get "wocket" with $($(foo)) Alternatively can you list all defined variables in awk? thanks (4 Replies)
Discussion started by: craig06y
4 Replies

4. UNIX for Dummies Questions & Answers

Variable Names With Numbers

Hi Everyone, I was just curious if you are allowed to begin a variable name with a number. For example, I would really like to have the variable 8DAY_AVERAGE. But my shell script only seems to allow EIGHTDAY_AVERAGE. Is there a way I can get the former to work? I am using bash. Thanks a lot! ... (1 Reply)
Discussion started by: msb65
1 Replies

5. Shell Programming and Scripting

Variable names within array call

I am trying to write a piece of code that will call a value from an array. There are multiple arrays that I need to call data from. Only one array needs to be used based on the step within the program. The arrays have the names "cue_0", "cue_1", and so on. I can't figure out how to call a value... (2 Replies)
Discussion started by: vockleya
2 Replies

6. Shell Programming and Scripting

File Names in a Variable in a loop

Hi All , I am having confusion in a shell script. Please guide me. I need to get multiple files (number of files vary time to time, file names are separated by '|') using FTP get from the remote server. Actually, i call the FTP function in a loop. At the last step, i need to move all the get... (3 Replies)
Discussion started by: spkandy
3 Replies

7. UNIX for Dummies Questions & Answers

Incrementing Variable Names

Hi, I am using BASH. I have encountered a situation where the following is necessary (but I am not sure how to do it): #Define multiple arrays, whose names only differ by a number: ARRAY_1=(1 2 3) ARRAY_2=(4 5 6) ARRAY_3=(7 8 9) #Define ARRAY_AMOUNT, the number of arrays. In this case... (1 Reply)
Discussion started by: msb65
1 Replies

8. Shell Programming and Scripting

[SHELL: /bin/sh] For loop using variable variable names

Simple enough problem I think, I just can't seem to get it right. The below doesn't work as intended, it's just a function defined in a much larger script: CheckValues() { for field in \ Group_ID \ Group_Title \ Rule_ID \ Rule_Severity \ ... (2 Replies)
Discussion started by: Vryali
2 Replies

9. Shell Programming and Scripting

TCSH scripts that use the same variable names

If I run two different TCSH scripts simultaneously that use identical variable names will this cause any problems? (1 Reply)
Discussion started by: thibodc
1 Replies

10. Shell Programming and Scripting

Indexing Variable Names

Hi All I think I might have bitten off more than I can chew here and I'm hoping some of you guys with advanced pattern matching skills can help me. What I want to do is index the occurrence of variable names within a library of scripts that I have. Don't ask why, I'm just sad like that... ... (3 Replies)
Discussion started by: bbq
3 Replies
CONFGET(1)						    BSD General Commands Manual 						CONFGET(1)

NAME
confget -- read a variable from a configuration file SYNOPSIS
confget [-cSx] [-N | -n] [-f filename] [-m pattern] [-P postfix] [-p prefix] [-s section] [-t type] varname... confget [-] [-N | -n] [-f filename] [-m pattern] [-P postfix] [-p prefix] [-s section] [-t type] -L pattern... confget [-] [-N | -n] [-f filename] [-m pattern] [-P postfix] [-p prefix] [-s section] [-t type] -l confget [-hTV] DESCRIPTION
The confget utility examines a INI-style configuration file and retrieves the value of the specified variables from the specified section. Its intended use is to let shell scripts use the same INI-style configuration files as other programs, to avoid duplication of data. The confget utility may retrieve the values of one or more variables, list all the variables in a specified section, list only those whose names or values match a specified pattern (shell glob or regular expression), or check if a variable is present in the file at all. It has a ``shell-quoting'' output mode that quotes the variable values in a way suitable for passing them directly to a Bourne-style shell. Options: -c Check-only mode; exit with a code of 0 if any of the variables are present in the configuration file, and 1 if there are none. -f filename Specify the configuration file to read from, or ``-'' (a single dash) for standard input. -h Display program usage information and exit. -L Variable list mode; display the names and values of all variables in the specified section with names matching one or more specified patterns. -l List mode; display the names and values of all variables in the specified section. -m pattern Only display variables with if their values match the specified pattern. -N Always display the variable name along with the value. -n Never display the variable name, only the value. -P postfix Display this string after the variable name as a postfix. -p prefix Display this string before the variable name as a prefix. -S Quote the variable values so that the ``var=value'' lines may be passed directly to the Bourne shell. -s section Specify the configuration section to read. If this option is not specified, confget will use the first section found in the configuration file. However, if the configuration file contains variable definitions before a section header, confget will only examine them instead. -T List the available configuration file types that may be selected by the -t option. -t type Specify the configuration file type. -V Display program version information and exit. -x Treat the patterns as regular expressions instead of shell glob patterns. ENVIRONMENT
Not taken into consideration. EXIT STATUS
If the -c option is specified, the confget utility will exit with a status of 0 if any of the specified variables exist in the config file and 1 if none of them are present. In normal operation, no matter whether any variables were found in the configuration file or not, the confget utility exits with a status of 0 upon normal completion. If any errors should occur while accessing or parsing the configuration file, the confget utility will display a diagnostic message on the standard error stream and exit with a status of 1. EXAMPLES
Retrieve the variable machine_id from the system section of a configuration file: confget -f h.conf -s system machine_id Retrieve the page_id variable from an HTTP GET request, but only if it is a valid number: confget -f- -t http_get -x -m '^+$' page_id Retrieve the variable hostname from the db section, but only if it ends in ``.ringlet.net'': confget -f h.conf -s db -m '*.ringlet.net' hostname Display the names and values of all variables in the system section with names beginning with ``mach'' or ending in ``name'', appending a ``cfg_'' at the start of each variable name: confget -f h.conf -s system -p 'cfg_' -L 'mach*' '*name' Display the names and values of all variables in the system section: confget -f h.conf -s system -l Safely read the contents of the db section: eval `confget -f h.conf -s db -p db_ -S -l` SEE ALSO
For another way to parse INI files, see the Config::IniFiles(3) Perl module. STANDARDS
No standards documentation was harmed in the process of creating confget. BUGS
Please report any bugs in confget to the author. AUTHOR
The confget utility was conceived and written by Peter Pentchev <roam@ringlet.net> in 2008. BSD
October 25, 2008 BSD
All times are GMT -4. The time now is 08:25 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy