What I want is printing the output the first line ( table head ) of ps aux and the grep result.
After search, I come up with following.
ps aux | tee >(head -1 > /dev/tty) | grep mongo
But I find the stdin of grep mongo is cut off.
Also, if I omit > /dev/tty, what will the stdout of head -1 ...
You could also use tee and head:
ps aux | tee >(head -n1) | grep syslog
Note however that as long as tee is unable to ignore SIGPIPE signals (see e.g. the discussion here) this approach needs a workaround to be reliable. The workaround is to ignore SIGPIPE signals, this can for example be done...
Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. In operation since before 1985, NTP is one of the oldest Internet protocols in use. NTP was originally designed by David L. Mills of the University of Delaware, who still oversees its development.
NTP is intended to synchronize all participating computers to within a few milliseconds of Coordinated Universal Time (UTC). It uses a modified version of Marzullo's algorithm to select accurate time servers and is designed to mitigate the effects...
The basic approach is to add black borders to your video to make it fit in one of DVD's allowed aspect ratios.
TLDR: skip down to In Conclusion.
A few definitions
First, though, I need to define a couple of different things:
An aspect ratio is simply the width of something divided by the hei...
I'm trying to patch an issue in puppetlabs-apt to enable the use of key fingerprints as identifiers to ensure that a certain key is present by its 40-digit key fingerprint.
I'm having difficulty checking that the key is present and I need a command which will output the following:
The 8-digit ...
