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--- shell2 [2021/05/21 00:04]
127.0.0.1 external edit
+++ shell2 [2022/10/17 12:31] (current)
dblume [Protips for find]
@@ Line 292: / Line 292: @@
 # at 3 in the morning on Mondays, delete files older than 30 days
 3 * * 1 find $HOME/.vim/backup/ -type f -mtime +30 -delete
+</code>
+====== Calculate web server bandwidth ======
+Use ''awk'' to add up a column from Apache logs:
+<code>
+$ sudo cat /var/log/httpd/access_log | awk '{SUM+=$10}END{print SUM/1024/1024}'
+.855597
 </code>
@@ Line 551: / Line 560: @@
   find lib -type f -name \*.so\* -exec sh -c 'objdump -p "$1" | grep "NEEDED.*libz"' - {} \; -print
-Note that you can pass -print (or -and -print) after a -exec argument. Also, the " - " is just a placeholder for $0 (usually the command name, in this case "sh"), we want $1 to be {}. It outputs results like:
+Note that you can pass -print (or -and -print) after a -exec argument. You can also use -printf, ex., ''-printf %%"%%\t%f\n%%"%%''. Also, the " - " is just a placeholder for $0 (usually the command name, in this case "sh"), we want $1 to be {}. It outputs results like:
     NEEDED               libz.so.1