Linux.com :: Bash script dynamic file naming

Author	Message
teh_raab Joined: Jan 05, 2009 Posts: 3 Other Topics	Posted Jan 05, 2009 at 12:04:55 PM Subject: Bash script dynamic file naming Hi All, This is my first post, im hoping someone can shed some light into this! I need to create a variable name on the fly then store information from a file to it e.g. -------------------------------------------------- #Get Details from ini file tmp=`cat "config.ini" \| grep NumberOfLoadables=` #Store info arr_Load${x}_Type${j}=`echo ${tmp#*=}` -------------------------------------------------- But, when i run the script i get an error like this.. [b]arr_Load1_Type1=osver_db.xml: command not found[/b] I think the problem is with how "arr_Load${x}_Type${j}" is being create! I need to have the two indexes in the variable name and dynamically. Does anyone have any ideas?
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thobbs Joined Oct 12, 2008 Posts: 238 Location:Texas! Other Topics	Posted: Jan 05, 2009 7:24:51 PM Subject: Re: Bash script dynamic file naming I'm pretty sure you can't dynamically name a variable. Are you trying to create a pseudo 2D array of arr_Load_Type variables? Why do you not just create an actual 2D array? See here: [url]http://tldp.org/LDP/abs/html/arrays.html[/url], especially the section on "nested arrays". [Modified by: thobbs on January 05, 2009 01:29 PM]
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blinky Joined Jan 08, 2009 Posts: 51 Other Topics	Posted: Jan 08, 2009 6:26:27 PM Subject: Re: Bash script dynamic file naming I put "NumberOfLoadables=abcde" into a config.ini Then tried tried: tmp=`grep "NumberOfLoadables=" config.ini` x=1 j=1 eval "arr_Load${x}_Type${j}=${tmp#*=}" echo $arr_Load1_Type1 and "echo $arr_Load1_Type1" prints abcde also eval echo "\$arr_Load${x}_Type${j}" prints abcde Not sure if that will help but I think you need to play with "eval" and use indirection to make it work (hope that makes sense). In a world without walls and fences, who needs Windows and Gates
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