What is the actual full form of DHCP Dynamic Host Configuration Protocol or Dynamic Host Control Protocol Answer Dynamic Host Configuration Protocol check out more info here
want to sort my log file on this timestamp 2019-06-29T12:39:23.428Z using sort command but confused as there are multiple delimeter
This is the format of timestamp on which 2019-06-29T12:39:23.428Z I want to sort. But the year is delimited by – and the time is delimited by : and both year and time are separated my T’. Tried this. Answer You can manually pick out each field to sort with -k from man: So something like this shoul…
How to run a command on file in directory recursively creating a new file in each directory being visited (Bash)?
I have a directory with a few sub-directories. I’d like to create a copy of each results.csv file in the same directory named results_cleaned.csv where certain lines will be removed. Each sub-directory is known to contain only a single file, results.csv. Running this on a single directory works: However…
Copy Gitlab repositories to another Gitlab server through filesystem
I had a gitlab server of 7.6.2 version with some repositories. Now this server was upgraded by newest Ubuntu and it has an empty gitlab server of version 12.0.1. I also have a HDD backup from old gitlab server. I need to move all repositories from old gitlab server to the new one. I tried to copy .git reposit…
/proc/meminfo not updating when reading from ssh script
I have the following script in bash: I have my host PC and a target PC which I am copying to. Before I run this script I have already scp’d a big file into /tmp on the target. When I run this script it copies the file /tmp/big ok, but when it enters the loop to sync the flash and
Recover informations from CSV files with my awk script
I have this CSV files : I create a little script that allow me to recover the informations from my csv and to place them like this : My script is : But the result is : Or I want : Can you tell me why my script doesn’t works and why floats are not taken into account ? Thank
What is the difference between closing [close(3)] and clearing [fd_clr(3)] a file descriptor?
I am having problems with an automated software testing, which is blaming use of freed resource when I use fd_clr(3) after using close(3) in a fd. Is there something wrong with doing this? Answer FD_CLR() only changes a local fd_set, which is a C data structure to store info about a list of file descriptors. …
Indirect expansion returns variable name instead of value
I am trying to set up some variables using indirect expansion. According to the documentation I’ve read, the set up should be simple: I should be getting “12345”. Instead, the output is “varname”. If I remove the exclamation point, I end up with “qa_ci”, not “12…
Where to find the max resolution for a touchscreen monitor in Linux?
The application that I’m writing has a thread that is constantly polling a /dev/input/eventX location for touch events since the Linux kernel I am running has limited support for touchscreens. Because of this limited support, QT5 does not receive any touch events, and I have to parse the raw event data …
How to get values for ipi_ifindex for sendmsg()?
Using sendmsg() it is possible to specify from which interface a datagram will be sent, if a value is set for in_pktinfo.ipi_ifindex. If the packet is a response to a datagram received with recvmsg() I can get the interface value from there. If I just know that the interface if ‘eth0’ or ‘en…