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shell2 [2020/08/02 15:55]
dblume Added XML XPath tips for Roku ECP Apps list 		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 # at 3 in the morning on Mondays, delete files older than 30 days
 0 3 * * 1 find $HOME/.vim/backup/ -type f -mtime +30 -delete 0 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}'
 +0.855597
 </code> </code>
  
Line 370: Line 379:
 Alternatively, to see the RSS use of that process alone: Alternatively, to see the RSS use of that process alone:
 <code bash> <code bash>
-while true; do sync; cat /proc/$(pidof yourprocess)/status | grep VmRSS; sleep 1; done+PID=$(pidof yourprocess); while true; do sync; grep VmRSS /proc/$PID/status; sleep 1; done
 </code> </code>
 ====== Measuring Available Memory ====== ====== Measuring Available Memory ======
Line 551: Line 560:
   find lib -type f -name \*.so\* -exec sh -c 'objdump -p "$1" | grep "NEEDED.*libz"' - {} \; -print   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     NEEDED               libz.so.1
shell2.1596408953.txt.gz · Last modified: 2021/10/24 23:48 (external edit)

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