Sponsored Content
Top Forums Shell Programming and Scripting dynamic variable value assignmnet Post 302542520 by kshji on Thursday 28th of July 2011 01:03:51 AM
Old 07-28-2011
Here is example, need eval - parse line twice
Code:
varname="$1"
value="$2"

eval $varname=\""$value"\"
echo "$varname"
eval echo "\"$varname:\$$varname"\"

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Dynamic Variable Declatation

Evening all, Have been trying to create the following environment variable: ${MD_SYSTEM}_ZZ_EMAIL_SUPPORT="myname@domain.com" However when the script that contains the above is executed it returns: ksh: MDQA_ZZ_EMAIL_SUPPORT=myname@domain.com: not found Is what I'm trying to do... (2 Replies)
Discussion started by: Cameron
2 Replies

2. UNIX for Dummies Questions & Answers

Dynamic variable values

Bit of a newbie :D with regard to unix scripting and need some advice. Hopefully someone can help with the following: I have a predefined set of variables as follows: AAA_IP_ADD=1.1.1.1 BBB_IP_ADD=2.2.2.2 I have a funnction call which retrieves a value into $SUPPLIER which would be... (3 Replies)
Discussion started by: ronnie_uk
3 Replies

3. Shell Programming and Scripting

Dynamic variable assignment

Hi All, I have the below scenario: A file test.cfg with three fields>> DATA1 DATA2 DATA3 In the script I need to assign each of the fields to variables. The number of fields will not be constant (this case we have three). Im trying to do something like this: NUM=1 OUT_DAT_NO=3 ... (4 Replies)
Discussion started by: deepakgang
4 Replies

4. Shell Programming and Scripting

dynamic variable name

I found one post in another site with a solution for my problem the below solution should explain what I want. #!/bin/sh first="one" second="two" third="three" myvar="first" echo ${!myvar} But this gives error 'bad substitution' System info SunOS sundev2 5.9... (3 Replies)
Discussion started by: johnbach
3 Replies

5. Shell Programming and Scripting

Dynamic variable assignment

Hi all, I’m very new to UNIX programming. I have a question on dynamic variable 1. I’m having delimited file (only one row). First of all, I want to count number of columns based on delimiter. Then I want to create number of variables equal to number of fields. Say number of... (5 Replies)
Discussion started by: mkarthykeyan
5 Replies

6. Shell Programming and Scripting

Help with Dynamic variable

I need some variable help TEMP1=Jane TEMP2=Sue X=1 eval USER=TEMP${X} echo $USER This gives output USER1 I would like to get Jane I have tried eval USER='TEMP${X}' eval USER="TEMP${X}" eval USER=`TEMP${X}` (3 Replies)
Discussion started by: Jotne
3 Replies

7. Shell Programming and Scripting

Dynamic file name in variable

Hi guys. i have a requirment as below. I have a scripts which perform for loop for i in /backup/logs -- it will give all the logs file SC_RIO_RWVM_20120413064217303.LOG SC_RIO_RWXM_20120413064225493.LOG SC_RIO_RXXM_20120413064233273.LOG ... do open script.sh ---- in this file... (3 Replies)
Discussion started by: guddu_12
3 Replies

8. Shell Programming and Scripting

Passing dynamic variable within another variable.

I have a small program which needs to pass variable dynamically to form the name of a second variable whose value wil be passed on to a third variable. ***************** Program Start ****************** LOC1=/loc1 PAT1IN=/loc2 PAT2IN=/loc3 if ; then for fpattern in `cat... (5 Replies)
Discussion started by: Cyril Jos
5 Replies

9. Shell Programming and Scripting

Dynamic variable assignment

My Code : -------------------------------------------- #!/bin/bash for i in `echo server1 server2` do eval ${i}_name = "apache" echo ${i}_name done -------------------------------------------- Current output : >./test.sh ./test.sh: line 5: server1_name: command not found... (3 Replies)
Discussion started by: sameermohite
3 Replies

10. Shell Programming and Scripting

Dynamic variable name in bash

Hello, I'm trying to build a small script to store a command into a dynamic variable, and I have trouble assigning the variable. #!/bin/bash declare -a var1array=("value1" "value2" "value3") var1arraylength=${#var1array} for (( i=1; i<${var1arraylength}+1; i++ )); do mkdir... (7 Replies)
Discussion started by: alex2005
7 Replies
nice(1) 							   User Commands							   nice(1)

NAME
nice - invoke a command with an altered scheduling priority SYNOPSIS
/usr/bin/nice [-increment | -n increment] command [argument]... /usr/xpg4/bin/nice [-increment | -n increment] command [argument]... csh Builtin nice [-increment | +increment] [command] DESCRIPTION
The nice utility invokes command, requesting that it be run with a different system scheduling priority. The priocntl(1) command is a more general interface to scheduler functions. The invoking process (generally the user's shell) must be in a scheduling class that supports nice. If the C shell (see csh(1)) is used, the full path of the command must be specified. Otherwise, the csh built-in version of nice will be invoked. See csh Builtin below. /usr/bin/nice If nice executes commands with arguments, it uses the default shell /usr/bin/sh (see sh(1)). /usr/xpg4/bin/nice If nice executes commands with arguments, it uses /usr/xpg4/bin/sh (see ksh(1)). csh Builtin nice is also a csh built-in command with behavior different from the utility versions. See csh(1) for description. OPTIONS
The following options are supported: -increment | -n increment increment is a positive or negative decimal integer that has the same effect on the execution of the utility as if the utility had called the nice() function with the numeric value of the increment option-argument. See nice(2). nice() errors, other than EINVAL, are ignored. If not specified, an increment of 10 is assumed. The super-user may run commands with priority higher than normal by using a negative increment such as -10. A negative increment assigned by an unprivileged user is ignored. OPERANDS
The following operands are supported: command The name of a command that is to be invoked. If command names any of the special built-in utilities (see shell_builtins(1)), the results are undefined. argument Any string to be supplied as an argument when invoking command. ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of nice: LANG, LC_ALL, LC_CTYPE, LC_MES- SAGES, PATH, and NLSPATH. EXIT STATUS
If command is invoked, the exit status of nice will be the exit status of command. Otherwise, nice will exit with one of the following val- ues: 1-125 An error occurred. 126 command was found but could not be invoked. 127 command could not be found. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: /usr/bin/nice +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ /usr/xpg4/bin/nice +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWxcu4 | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), ksh(1), nohup(1), priocntl(1), sh(1), shell_builtins(1), nice(2), attributes(5), environ(5), standards(5) SunOS 5.11 23 Jan 2004 nice(1)
All times are GMT -4. The time now is 10:37 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy