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Month: February 2021

Show if a file is a link in Nautilus File Manager (but not whence [target])

Published by jweisber on 2021-02-24

Recently I discovered the following two ways to show if a file is a link in Nautilus List View. Sadly I have not been able to find a way for list view to show the link target, which Nautilus used to do. (For an individual file, one can determine it via File >> Properties .)

  1.  In list view , each file has an icon on far left, and a link superimposes onto that icon a “badge” that is a curvy arrow. The trouble is that this is faint, which is why I never noticed it before!  After a long time of trying to change the default badge for a link to something more noticeable, I gave up. I can do it for an individual file, but not for the class of all files having a link.
  2. FInally I figured out how to  denote all files that are actually links  in the list view, via the unix “permissions”  which include a leading ℓ if it is a link.  I think this is how:
    edit>>preferences>>list columns pane: I now place checks next to:
    Name
    Size
    Date  Mod
    Group
    Owner
    Permissions
  3. Sadly, I have not found a way for the list view to automatically show the link target (i.e. the name of the file that each link is attached to), as it used to. That is, I cannot create a column showing this information in the list view. As noted above, for an individual file, one can determine it via File >> Properties .)

pgplot is in multiple locations! caution!

Published by jweisber on 2021-02-12

We have been moving from centos6 (32bit OS) to centos7 (64bit OS)

One of the big things I had to do was make sure that pgplot and cpgplot would work on centos7

I now see (as I had already vaguely thought) that there are multiple pgplots in multiple places.So user beware!

As of 2021 Feb 12, we have (on thuban2 disk system) a
/var/share/astro/ which was used by centos6
/var/share/astro_centos7/ is to be used by centos7 after we upgrade the desktops to centos7. Note that at that time, /var/share/astro_centos7/ will look to the desktops as if it is the “default” /usr/share/astro/ thanks to Bruce’s wizardry. 

/var/share/astro:

As of right now, I have found pgplot in the following 3 directories:under /var/share/astro/:

[jweisber@thuban2 astro]$ pwd
/var/share/astro
[jweisber@thuban2 astro]$ find ./src/pgplot | wc
795 8745 77769

[jweisber@thuban2 astro]$ pwd
/var/share/astro
find ./psrhome/src/pgplot | wc
796 796 30909 mostly from 1990s

[jweisber@thuban2 astro]$ pwd
/var/share/astro
[jweisber@thuban2 astro]$ find ./psrhome/pgplot |wc
33 33 873 from 2016 by Yuping, some executables and libs

See also one 32 bit pgplot dirs and/or files under /var/share/astro/: (whereas astro_centos7 below has heaps)

[jweisber@thuban2 astro]$ pwd
/var/share/astro
[jweisber@thuban2 astro]$ find ./psrhome/psrchive-Carleton-install -ls  | grep pgplot_32bits | wc
32 352 4042 (2015 yuping files in ./psrhome/psrchive-Carleton-install/pgplot_32bits/)

/var/share/astro_centos7:

I have also found pgplot in the following 3 directories under /var/share/astro_centos7/:[jweisber@thuban2 astro_centos7]$ pwd
/var/share/astro_centos7
[jweisber@thuban2 astro_centos7]$ find ./src/pgplot | wc
795 795 24504 (files mostly from 1990s)
(apparently identical to standard old /var/share/astro/)

/:[jweisber@thuban2 astro_centos7]$ pwd
/var/share/astro_centos7
[jweisber@thuban2 astro_centos7]$ find ./psrhome/src/pgplot  | wc
798 798 30977 (files mostly from 2021 Feb [a few days ago!])

[jweisber@thuban2 astro_centos7]$ pwd
/var/share/astro_centos7
[jweisber@thuban2 astro_centos7]$find ./psrhome/pgplot |wc
284 284 7421 from 2021 mainly .o files dated Feb (recently) probably what I got running on phasshare, though rather skinny in number of files!

See also a ton of various 32 bit pgplot dirs and/or files under /var/share/astro_centos7:
First under ./psrhome32:
[jweisber@thuban2 astro_centos7]$ find ./psrhome32 -ls | grep pgplot | less
–A few files under ./psrhome32/pgplot_32bits/ , mostly dated Nov 8-9 2020 (which is the date many of them were copied to the   64 bit virtual  test machine “phasshare”)
–Pretty many under ./psrhome32/src/tempo2/, also dated 2020 Nov for same reasons as stated above.
—./psrhome32/src/pgplot/ which has tons of mostly 1990s files and a few from Nov 8
—./psrhome32/pgplot/  A bunch of almost entirely .o files, mostly dated Nov 8 for reasons given above
–the famous ./psrhome32/src/psrchive/packages/pgplot.csh which we eventually used in order to successfully build (pgplot make and other scripts and especially cpgplot make and other scripts) on phasshare, also dated Nov 8

Now under ./psrhome/psrchive-Carleton-install/pgplot_32bits/:
[jweisber@thuban2 astro_centos7]$ find . -ls | grep 32bits | less
./psrhome/psrchive-Carleton-install/pgplot_32bits/  has lots of files owned by Yuping  from 2015.

Yuck! They’re proliferated all over /var/share/astro_centos7!