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Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网 - 专注C++内核技术
...r/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/head -v -n 8 /proc/meminfo
2.008 head 12108 6578 0 /usr/bin/head -v -n 2 /proc/stat /proc/version /p...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
...r/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/head -v -n 8 /proc/meminfo
2.008 head 12108 6578 0 /usr/bin/head -v -n 2 /proc/stat /proc/version /p...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...r/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/head -v -n 8 /proc/meminfo
2.008 head 12108 6578 0 /usr/bin/head -v -n 2 /proc/stat /proc/version /p...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
...r/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/head -v -n 8 /proc/meminfo
2.008 head 12108 6578 0 /usr/bin/head -v -n 2 /proc/stat /proc/version /p...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...r/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/head -v -n 8 /proc/meminfo
2.008 head 12108 6578 0 /usr/bin/head -v -n 2 /proc/stat /proc/version /p...
How to listen for changes to a MongoDB collection?
...> true)
loop do
if doc = cursor.next_document
puts doc
else
sleep 1
end
end
PHP
$mongo = new Mongo();
$db = $mongo->selectDB('my_db')
$coll = $db->selectCollection('my_collection');
$cursor = $coll->find()->tailable(true);
while (true) {
if ($cursor->hasNext())...
OS X Bash, 'watch' command
...basic functionality with the shell loop:
while :; do clear; your_command; sleep 2; done
That will loop forever, clear the screen, run your command, and wait two seconds - the basic watch your_command implementation.
You can take this a step further and create a watch.sh script that can accept yo...
Really weird eclipse keyboard behavior/bug?
.... They worked in other applications. Option-Arrows worked fine to move a selection around. Arrows worked in the keyboard preferences window. Switching to another application and back didn't work. Restarting eclipse made no difference. Switching keyboard schemes from Emacs -> Default -> E...
How to get process ID of background process?
...rdinal number of background process as seen from jobs):
$ echo $$
3748
$ sleep 100 &
[1] 192
$ echo $!
192
$ kill %1
[1]+ Terminated sleep 100
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Ruby sleep or delay less than a second?
...t 1/24th of a second between sending the commands. What is the best way to sleep for less than a second?
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