Top new questions this week:
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I have several utility programs that do not have their own directory and are just a single executable. Typically I put the binary in /usr/local/bin. A problem I have is how to manage preference ...
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As I know crontab has those fields, starting by left to right.
1 minutes 0-59
2 hours 0-23
3 days of month 0-31
4 month 1-12
5 day of the week 0-6
6 command
I want to run foo command ...
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I use awk a fair bit for parsing logs; I have never seen anything like this:
I have six file containing a number of lines; I want the ones containing "100", and to choose which columns to ...
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While building a tool that reads command output I realized that some Linux utilities output Unicode characters when I didn't really expect them to do so. For instance, find uses ‘ (as opposed to the ...
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I own 8GB RAM Dell XPS13 9343, the amount of RAM is biggest pain of this computer, it's soldered on mainboard. Despite CPU supports more even resoldering bigger one with firmware modification is not ...
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Problem: NFS can be slow, when starting binaries (e.g. /usr/bin) over NFS, such as in a network booted system. RAM buffer cache might not be sufficient to avoid slowness.
Idea: it seems we should be ...
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I have a huge log file (about 6GB) from a simulation. Among the millions of lines in that file, there are two lines that are frequently repeating for a given time:
...
Max value of omega = 3.0355
Time ...
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Greatest hits from previous weeks:
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I check service status with systemctl status service-name.
By default, I see few rows only, so I add -n50 to see more.
Sometimes, I want to see full log, from start. It could have 1000s of rows.
Now,...
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Replacing strings in files based on certain search criteria is a very common task. How can I
replace string foo with bar in all files in the current directory?
do the same recursively for sub ...
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I have a string:
one_two_three_four_five
I need to save in a variable A value two and in variable B value fourfrom the above string
I am using ksh.
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I have a folder with some directories and some files (some are hidden, beginning with dot).
for d in *; do
echo $d
done
will loop through all files, but I want to loop only through directories. How ...
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Does anyone know where file access logs are stored, so I can run a tail -f command in order to see who is accessing a particular file.
I have XAMPP, which is an Apache server installed on my machine, ...
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How can I delete all lines in a file using vi?
At moment I do that using something like this to remove all lines in a file:
echo > test.txt
How can I delete all lines using vi?
Note:
Using dd ...
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Which command should I use to remove a user from a group in Debian?
When adding a user to a group, it can be done with:
usermod -a -G group user
However, I could not find a similar command (...
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Can you answer these questions?
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We know in Linux there is /opt directory.
we can install a whole software under it.
but how about a software's configure file?
I compile varnish and installed it into /opt/varnish, but /opt/varnish, I ...
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Consider an industrial computer (say "embedded system"),
equipped with a linux server OS (no desktop)
running just a SINGLE application process (a single non-root user)
attached to an high ...
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I have a particular reference video I am following but I am not sure what steps to execute if I am to install Linux mint with /boot partition.
See reference video: https://www.youtube.com/watch?v=...
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