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Top Forums Shell Programming and Scripting Simple unix variables in script Post 302416775 by jenix4545 on Tuesday 27th of April 2010 04:52:02 PM
Old 04-27-2010
I'm trying to figure it out still. I know this isn't the best way to complete the task. Any tips are appreciated.
basically fnom is a log file that I want to rotate in a specific way. when the script is run, the log file will become fnom.1 and every older version is iterated by 1.

After I get the user input for the file location and name this is my script.
Code:
touch ${fnom}.{1..20}
mv ${fnom} ${fnom.1}

mv ${fnom}.20 ${fnom}.21
mv ${fnom}.19 ${fnom}.20
mv ${fnom}.18 ${fnom}.19
mv ${fnom}.17 ${fnom}.18
mv ${fnom}.16 ${fnom}.17
mv ${fnom}.15 ${fnom}.16
mv ${fnom}.14 ${fnom}.15
mv ${fnom}.13 ${fnom}.14
mv ${fnom}.12 ${fnom}.13
mv ${fnom}.11 ${fnom}.12
mv ${fnom}.10 ${fnom}.11
mv ${fnom}.9 ${fnom}.10
mv ${fnom}.8 ${fnom}.9
mv ${fnom}.7 ${fnom}.8
mv ${fnom}.6 ${fnom}.7
mv ${fnom}.5 ${fnom}.6
mv ${fnom}.4 ${fnom}.5
mv ${fnom}.3 ${fnom}.4
mv ${fnom}.2 ${fnom}.3
mv ${fnom}.1 ${fnom}.2

echo "COMPLETE"

here is the error I am getting

Code:
 line 28: ${fnom.1}: bad substitution
mv: cannot stat `foo.1': No such file or directory

If the dir only had a file named foo ... then after the script runs foo.(3-20) exist but foo.1 and foo.2 do not.

Last edited by Scott; 04-27-2010 at 06:38 PM.. Reason: Code tags, please...
 

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source(n)						       Tcl Built-In Commands							 source(n)

__________________________________________________________________________________________________________________________________________________

NAME
source - Evaluate a file or resource as a Tcl script SYNOPSIS
source fileName source -encoding encodingName fileName | _________________________________________________________________ DESCRIPTION
This command takes the contents of the specified file or resource and passes it to the Tcl interpreter as a text script. The return value from source is the return value of the last command executed in the script. If an error occurs in evaluating the contents of the script then the source command will return that error. If a return command is invoked from within the script then the remainder of the file will be skipped and the source command will return normally with the result from the return command. The end-of-file character for files is "32" (^Z) for all platforms. The source command will read files up to this character. This restriction does not exist for the read or gets commands, allowing for files containing code and data segments (scripted documents). If you require a "^Z" in code for string comparison, you can use "32" or "u001a", which will be safely substituted by the Tcl interpreter into "^Z". The -encoding option is used to specify the encoding of the data stored in fileName. When the -encoding option is omitted, the system | encoding is assumed. EXAMPLE
Run the script in the file foo.tcl and then the script in the file bar.tcl: source foo.tcl source bar.tcl Alternatively: foreach scriptFile {foo.tcl bar.tcl} { source $scriptFile } SEE ALSO
file(n), cd(n), encoding(n), info(n) KEYWORDS
file, script Tcl source(n)
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