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Full Discussion: Logrotate.d for every httpd instance for loop?
Top Forums Shell Programming and Scripting Logrotate.d for every httpd instance for loop? Post 302968166 by Don Cragun on Friday 4th of March 2016 04:28:09 PM
Old 03-04-2016
Quote:
Originally Posted by xgringo
Maybe from this you can tell what I'm attempting at. I'm trying to get a list of all the jvm's running on webservers and then create a logrotated file for each one. However if the file already exist in /etc/logrotated/ I don't want to over write it, want to skip the existing. Then inside the file I'm trying to replace for each one the hostname inside the file.

Code:
ls -d /apps/apahce/*httpd* >/usr/local/scripts/jvmlist.txt 
jvmlist=`/usr/local/scripts/jvmlist.txt`
clear
for name in $jvmlist
  do
     
	if [ ! -f /etc/logrotated/$name cp /usr/local/scripts/examplescript.txt ]; then cp /usr/local/scripts/examplescript.txt /usr/local/scripts/stage/$name
	 
	cd /usr/local/scripts/stage/
	
	sed -i 's/examplehost/$name/g' /usr/local/scripts/stage/$name

There are several problems here:
  1. A for loop requires a do and a done. You have no done.
  2. An if statement requires a then and a fi. You have no fi.
  3. Shell variables are not expanded inside single quotes. And, since $name will expand to a string containing slash characters (/), you can't use slash as the separator in the sed substitute command. Use double quotes instead of single quotes around your sed program and use vertical bar (AKA pipe symbol) or some other character that won't appear in any expansion of $name instead of slash.
  4. Your for loop will execute once (with $name expanding to the name of the file that contains the names you want to process); not once for each file you want to process (with $name expanding to the name of a file you want to process). And, there is no need for a temporary file here. And, if you're going to define a variable specifying the name of your temporary file, define that variable before you have the name hardcoded into other commands and use the variable name consistently.
  5. Do you really have a directory named /apps/apahce? Or should it be /apps/apache?
  6. The three arguments /etc/logrotated/$name cp /usr/local/scripts/examplescript.txt cannot match the name of a regular file because the test -f (AKA [ -f ... ] command in your if statement expects one operand; not three.
Making lots and lots of wild assumptions, maybe something more like:
Code:
ls -d /apps/apache/*httpd* | while read -r name
do	if [ ! -f "/usr/local/scripts/stage$name" ]
	then	sed 's|examplehost|$name|g' /usr/local/scripts/examplescript.txt > "/usr/local/scripts/stage$name"
	fi
done

 

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