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Operating Systems Solaris about log errors
# 1  
Old 06-22-2010
about log errors
How would you truncate a log file that is growing too large if you don't have space to compress it or to move it somewhere else? How would you do it?
# 2  
Old 06-22-2010
GNU sed has an inline editing function to perform on files.

delete reasonable amount of the file from the start using 'sed'

Code:
sed -i '1,1000d' filename

this will delete first 1,000 lines from file without need of a temp file.
# 3  
Old 06-22-2010
If you don't want to keep the contents:
Code:
: > file.log

If you want to keep the contents:
Code:
 perl -e 'open $fh,"<file.log"; \
@bla=<$fh>; close "file.log"; unlink "file.log"; open $fh,"|gzip -9c"; \
print $fh @bla; close $fh;' > file.gz

Change file.log to the correct name where needed.
Last edited by pludi; 06-22-2010 at 04:10 AM.. Reason: corrected formatting
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