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Author Archives: jeffrin
Show elapsed (round-trip) time of packets.
$fping -e www.gnu.org www.gnu.org is alive (301 ms) $fping -e www.gnu.org www.gnu.org is alive (302 ms) $fping -e www.rajagiritech.edu.in www.rajagiritech.edu.in is alive (62.2 ms) $fping www.gnu.org www.gnu.org is alive $ping www.gnu.org PING wildebeest.gnu.org (208.118.235.148) 56(84) bytes of data. 64 bytes from wildebeest.gnu.org (208.118.235.148): icmp_seq=1 ttl=49 time=302 ms 64 bytes from wildebeest.gnu.org (208.118.235.148): icmp_seq=2 ttl=49 time=301 …
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INTRODUCTION TO CONTROL GROUPS (CGROUPS)
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/resource_management_guide/ch01
What’s Next for Containers? User Namespaces
https://rhelblog.redhat.com/2015/07/07/whats-next-for-containers-user-namespaces/
What’s a Linux container?
https://www.redhat.com/en/topics/containers/whats-a-linux-container
Extracting the second word from a string variable
https://unix.stackexchange.com/questions/174037/extracting-the-second-word-from-a-string-variable
pstree command usage example with process id as first argument
ABOUT pstree pstree is a Linux command that shows the running processes as a tree. It is used as a more visual alternative to the ps command. The root of the tree is either init or the process with the given pid. It can also be installed in other Unix systems. TYPICAL COMMANDLINE SESSION [bash] …
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How do I get the parent process ID of a given child process?
https://askubuntu.com/questions/153976/how-do-i-get-the-parent-process-id-of-a-given-child-process https://superuser.com/questions/150117/how-to-get-parent-pid-of-a-given-process-in-gnu-linux-from-command-line/544696#544696
perf: Linux profiling with performance counters
https://perf.wiki.kernel.org/index.php/Tutorial#Attaching_to_a_running_process
A bit field is a data structure used in computer programming
https://en.wikipedia.org/wiki/Bit_field