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Hi,

If you're wanting to print the separate fields of a CSV out one per line, then something like this would work:


$ cat test.csv...

Hello,

OK, here's a quick hacked-together version of a script that more-or-less does what crond would do. As Neo has mentioned however, this is not the best idea, as you're kind of needlessly...

Hi,

In that case, you'd really be into the territory of literally re-inventing crontab. For example, you could define an input file format that consisted of runtimes and their associated...

Hi,

Using the approach from my script, you would just tweak the runtime variable accordingly. For instance, in the provided example:


runtime=`/usr/bin/date -d '2019-08-09 14:22:00' +%s`

...

Hello,

Yes, that's correct - this error means that the user myuser is not allowed to run the su command via sudo. That's not unusual, and in fact is generally good practice. If you let regular...

Hi,

As Neo has said, the most likely explanation here is that myuser has a valid shell set in /etc/passwd, whereas webuser does not.

Witness the following example:


# finger -l unixforum...

Hi,

The sed command can take care of this for you:


$ cat test.txt
,001E:001F,,,02EE,0FED:0FEF,
$ sed -i 's/^,//g;s/,$//g' test.txt
$ cat test.txt
001E:001F,,,02EE,0FED:0FEF


The...

Hi,

In theory, this should be fairly straightforward. If you want to delete all files created from 2017 and beyond (i.e. also files from 2016, 2015, etc - anything older than 2017), then you...

Hi,

There's a few ways to approach this, but using the find command as you're starting to do will certainly do the trick. However, as things stand, your find command isn't actually going to do...

Hi,

Yes, the issue here is most likely to be zenity, as you say. zenity is a utility for displaying dialog boxes in an X Windows graphical environment. If you're running this server headless...

Hi,

OK, two things to try here:

1. Use the full path in your command - so /usr/bin/stress (assuming that's where it's installed on your system, naturally) rather than just stress
2. Remove the...

Hello,

I'm not 100% clear on what you might mean here, but I see two possibilities. A script will normally exit either when the last command it contains is executed, or when an exit statement is...

Hi,

If you are really, truly needing to provide some way for your end users in a production environment to add or subtract numbers at the command line, there's no sense in re-inventing the wheel...

Hi,

Functionally-speaking, you're absolutely correct of course - you couldn't with a straight face call an iPad a UNIX workstation. But kernel-wise at least I believe iOS is UNIX underneath, as...

Hi,

Whilst there's no question that Linux is the dominant OS in the UNIX(ish) family, I don't personally think that the BSDs are going to go away any time soon.

For example, looking at...

Hi,

That's a very open-ended question without a clear answer. As always, it depends almost entirely on what exactly you're going to be doing, on your workload, on the OS your guests will be...

Hi,

If you are administering this UNIX sytem remotely, and you issued an init 0 command, then (unless something went wrong to stop the process) the system will be shut down. It won't be rebooting...

Hi,

Taking these in turn:

1. grep -l basically just prints the names of files that match the pattern you're searching for, rather than printing the matching lines in the files themselves. For...

Hi,

Port 514 is the port for the syslog service, as you seem to have already determined. However, in those instances where a local logging service is configured to listen for incoming connections...

Hi,

There's no easy way to do what you want to do with find, or at least not based on a simple -type test. As you've previously been advised, an empty file is defined as a file containing 0 lines...

Hi,

Basically, yes.

However, there is one more thing that may be worth checking. If your Solaris system has accounting enabled, then you might be able to run lastcomm to see the commands...

Hello,

I would imagine that under normal circumstances the kernel would choose to allocate memory from the free pool first, before flushing out buffers, cache or anything else. It all depends...

Hi,

Taking your questions in turn:

1. Buffers and cache are essentially types of memory that, whilst they are in use, could be freed up if the system required memory for some other purpose. ...

Hi,

That's good, that you at least have something that can take over while you do a re-build. In terms of repairing this - I'm not myself aware of a way of doing that, sadly. The problem is that...

Hi,

I just tried this in vim, and the following command worked for me:


1,$ s/\.\*/[0-9][0-9]/g


This turned the following string:


blah blah .*:.*:.* blah blah


into this:

...