Assuming you are only adding one line at a time, and that the log file isn’t huge, then something like this should do it……
$path = "c:\Something.log" $file = Get-Content $path -ReadCount 0 Set-Content $path -Value ($file | Select-Object -First ($file.count-1)) Matt From: [email protected] [mailto:[email protected]] On Behalf Of Stephen Leuthold Sent: 22 December 2014 17:12 To: [email protected] Subject: Re: [mssms] OT: Powershell Rolling/Rotating log file If you want to go off of line count you could Get-Content file.log -tail 720 to get the latest 720 lines, save to a temp file, and overwrite the file.log with the temp file. Probably a more efficient way to do it though. Maybe save to a variable instead. -Stephen On Dec 22, 2014, at 10:14 AM, Beardsley, James <[email protected]<mailto:[email protected]>> wrote: Yeah, the director wants an actual log file. I mentioned the event log because that would be my preference as well but he differed in opinion. From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Gilmanov, Nile Sent: Monday, December 22, 2014 11:03 AM To: <[email protected]<mailto:[email protected]>> Subject: Re: [mssms] OT: Powershell Rolling/Rotating log file Have you considered logging to the event log system. E.g application log? Rotation can be configured by OS itself, size etc? Sent from my iPhone On Dec 22, 2014, at 10:59 AM, "Beardsley, James" <[email protected]<mailto:[email protected]>> wrote: I’ve been searching the web and I’m not having any luck finding an answer so hoping someone has come across this before. I’m looking for a way to add logging to my posh script that will only keep 30 days. I’ve found some functions (like this<http://blogs.msdn.com/b/rslaten/archive/2014/07/28/logging-in-cmtrace-format-from-powershell.aspx>) that’ll archive a log like SCCM does after 30 days (ie: rename to .lo_ and create a new .log) but I’d like to have the logging function continue using the same log file but just delete the older lines from the bottom and continue adding to the top so it’s a continuous 30 days at all times. Or maybe it’d be easier to measure by the number of lines. My script runs every hour and logs one line to a log file each time. So a months worth of logging should be around 720 lines if my math is correct and it could delete lines over 720 and continue adding to the top. Is that even possible? Thanks, James ________________________________ Confidentiality Notice: This e-mail is intended only for the addressee named above. It contains information that is privileged, confidential or otherwise protected from use and disclosure. If you are not the intended recipient, you are hereby notified that any review, disclosure, copying, or dissemination of this transmission, or taking of any action in reliance on its contents, or other use is strictly prohibited. If you have received this transmission in error, please reply to the sender listed above immediately and permanently delete this message from your inbox. Thank you for your cooperation. ________________________________ Confidentiality Notice: This e-mail is intended only for the addressee named above. It contains information that is privileged, confidential or otherwise protected from use and disclosure. If you are not the intended recipient, you are hereby notified that any review, disclosure, copying, or dissemination of this transmission, or taking of any action in reliance on its contents, or other use is strictly prohibited. If you have received this transmission in error, please reply to the sender listed above immediately and permanently delete this message from your inbox. Thank you for your cooperation. --------------------------------------------------------------------------------------- Information in this message is sent in confidence and is intended only for the use of the individual or entity to whom it is addressed. If you are not the intended recipient, any use, distribution or copying of the information is strictly forbidden. Please notify the sender immediately by return email or telephone 01823 721400. If you received this email in error please delete it and any copies of it from your system. Viridor Waste Management Limited Registered Office: Peninsula House, Rydon Lane, Exeter EX2 7HR Registered in England No. 575069 ---------------------------------------------------------------------------------------
