Visualize the blog schedule using a terminal.
I have tried to use
calendar and gcal, but these applications weren’t suitable for this task. There is also a khal, which is excellent, but only pal allow keeping things simple in this specific use case.Install pal calendar with events.
$ sudo apt install pal
In this example, the repository that contains blog posts is stored in /srv/golb_oper/_posts/ directory.
$ ls -1 /srv/golb_oper/_posts/ [...] /srv/golb_oper/_posts/2020-01-01-how-to-protect-system-against-accidental-shutdown.html /srv/golb_oper/_posts/2020-01-06-how-to-supress-message-of-the-day.html /srv/golb_oper/_posts/2020-01-09-how-to-display-lwn-news-using-message-of-the-day-framework.html /srv/golb_oper/_posts/2020-01-13-how-to-stop-requests-with-empty-or-incorrect-host-header.html /srv/golb_oper/_posts/2020-01-15-how-to-use-yum-without-downloading-or-updating-metadata.html /srv/golb_oper/_posts/2020-01-17-how-to-serve-single-file-using-nginx.html /srv/golb_oper/_posts/2020-01-20-how-to-manage-and-display-system-news.html /srv/golb_oper/_posts/2020-01-22-how-to-mark-which-backend-server-is-used.html /srv/golb_oper/_posts/2020-01-27-how-to-access-onedrive-on-debian.htm [...]
Create a dedicated pal directory.
$ mkdir pal
Change the working directory.
$ cd pal
Create blog-pal.conf configuration file. I have removed settings that don’t have any impact on this use case.
##-------------------------------------------------------------------- ## pal.conf file ## Type "man pal" for more information about this file. ## ## Comments begin with # ## ## The latest copy of a 'template' pal.conf file can be found in ## /etc/pal.conf. It describes every setting that can be changed in ## pal.conf. ## ##-------------------------------------------------------------------- file dynamic-blog.pal (red) ##-------------------------------------------------------------------- ## Make weeks begin on monday week_start_monday ##-------------------------------------------------------------------- ## Display week numbers in output show_weeknum ##-------------------------------------------------------------------- ## Don't use columns when displaying the calendar #no_columns ##-------------------------------------------------------------------- ## Show lists of events in a more compact form (no spaces between ## days) compact_list ##-------------------------------------------------------------------- ## Date format used when compact_list is used ## Default: %m/%d/%Y ## ## The default writes the date in the American format. Users in other ## countries might prefer using %d/%m/%Y compact_date_fmt %d/%m/%Y ##-------------------------------------------------------------------- ## If you get tired of always using -r, you can set the default value ## for -r here. Note: Remember that this will affect what is ## displayed when -d and -s are used too. ## Default: 0 ## ## Use the same thing thing after default_range that you use with -r. ## For example, if you always want to use '-r 1-2', use 'default_range ## 1-2'. This value can be overridden by using -r at run-time. default_range 1-30
(Re)Generate a calendar.
$ posts_dir=/srv/golb_oper/_posts; \
echo "[] sleeplessbeastie.eu" > ~/pal/dynamic-blog.pal; \
ls ${posts_dir}/*.html | \
xargs -I {} basename {} | \
awk -F- '{cmd="grep ^title: '${posts_dir}'/"$0" | cut -d: -f2"; cmd | getline title; close(cmd);print $1 $2 $3 title}' >> ~/pal/dynamic-blog.pal
The calendar is just a plain text file, which is advantageous as it can be quickly modified or regenerated.
$ cat dynamic-blog.pal [] sleeplessbeastie.eu 20101129 How to access CLI on Linksys SRW switch 20101129 How to use ImageMagick effects with Coppermine 20101201 Nginx and Gandi SSL certificate 20101201 Nginx proxy and real IP address 20101202 HTTPS Everywhere 20101203 Linux-like environment for Windows 20101203 Ruby and RMagick - Quote with Polaroid-like effect 20101203 Zen Photo and Nginx – rewrite rules 20101204 Hide posts from selected category on main WordPress page [...]
Display calendar schedule and posts that will be published in the next 30 days.
$ pal -f ~/pal/blog-pal.conf -c 16
Mo Tu We Th Fr Sa Su | Mo Tu We Th Fr Sa Su
Dec [23] 24 [25] 26 27 28 29 |Apr [13] 14 [15] 16 17 18 19
Jan [30] @31@ [01] 02 03 04 05 | 16 [20] 21 [22] 23 24 25 26
1 [06] 07 08 [09] 10 11 12 |May [27] 28 [29] 30 01 02 03
2 [13] 14 [15] 16 [17] 18 19 | 18 [04] 05 [06] 07 08 09 10
3 [20] 21 [22] 23 24 25 26 | 19 [11] 12 [13] 14 [15] 16 17
Feb [27] 28 29 30 31 01 02 | 20 [18] 19 20 21 22 23 24
5 [03] 04 [05] 06 07 08 09 | 21 [25] 26 27 28 29 30 31
6 [10] 11 [12] 13 14 15 16 |Jun [01] 02 [03] 04 [05] 06 07
7 [17] 18 19 20 21 22 23 | 23 [08] 09 10 11 12 13 14
Mar [24] 25 [26] 27 28 [29] 01 | 24 [15] 16 17 18 19 20 21
9 [02] 03 [04] 05 [06] 07 08 | 25 [22] 23 24 25 26 27 28
10 [09] 10 [11] 12 13 14 15 |Jul 29 30 01 02 03 04 05
11 [16] 17 [18] 19 20 21 22 | 27 06 07 08 09 [10] 11 12
12 23 24 25 26 27 28 29 | 28 13 14 15 16 [17] 18 19
Apr [30] 31 01 02 03 04 05 | 29 20 21 22 23 24 25 26
14 [06] 07 [08] 09 10 11 12 |Aug 27 28 29 30 31 01 02
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* 06/01/2020 sleeplessbeastie.eu: How to suppress message of the day
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* 27/01/2020 sleeplessbeastie.eu: How to access OneDrive on Debian
Display calendar schedule only.
$ pal -f ~/pal/blog-pal.conf -c 28 -r 0
Mo Tu We Th Fr Sa Su | Mo Tu We Th Fr Sa Su
Dec [23] 24 [25] 26 27 28 29 |Jul 06 07 08 09 [10] 11 12
Jan [30] @31@ [01] 02 03 04 05 | 28 13 14 15 16 [17] 18 19
1 [06] 07 08 [09] 10 11 12 | 29 20 21 22 23 24 25 26
2 [13] 14 [15] 16 [17] 18 19 |Aug 27 28 29 30 31 01 02
3 [20] 21 [22] 23 24 25 26 | 31 03 04 05 06 07 08 09
Feb [27] 28 29 30 31 01 02 | 32 10 11 12 13 14 15 16
5 [03] 04 [05] 06 07 08 09 | 33 17 18 19 20 21 22 23
6 [10] 11 [12] 13 14 15 16 | 34 24 25 26 27 28 29 30
7 [17] 18 19 20 21 22 23 |Sep 31 01 02 03 04 05 06
Mar [24] 25 [26] 27 28 [29] 01 | 36 07 08 09 10 11 12 13
9 [02] 03 [04] 05 [06] 07 08 | 37 14 15 16 17 18 19 20
10 [09] 10 [11] 12 13 14 15 | 38 21 22 23 24 25 26 27
11 [16] 17 [18] 19 20 21 22 |Oct 28 29 30 01 02 03 04
12 23 24 25 26 27 28 29 | 40 05 06 07 08 09 10 11
Apr [30] 31 01 02 03 04 05 | 41 12 13 14 15 16 17 18
14 [06] 07 [08] 09 10 11 12 | 42 19 20 21 22 23 24 25
15 [13] 14 [15] 16 17 18 19 |Nov 26 27 28 29 30 31 01
16 [20] 21 [22] 23 24 25 26 | 44 02 03 04 05 06 07 08
May [27] 28 [29] 30 01 02 03 | 45 09 10 11 12 13 14 15
18 [04] 05 [06] 07 08 09 10 | 46 16 17 18 19 20 21 22
19 [11] 12 [13] 14 [15] 16 17 | 47 23 24 25 26 27 28 29
20 [18] 19 20 21 22 23 24 |Dec 30 01 02 03 04 05 06
21 [25] 26 27 28 29 30 31 | 49 07 08 09 10 11 12 13
Jun [01] 02 [03] 04 [05] 06 07 | 50 14 15 16 17 18 19 [20]
23 [08] 09 10 11 12 13 14 | 51 21 22 23 24 25 26 27
24 [15] 16 17 18 19 20 21 |Jan 28 29 30 31 01 02 03
25 [22] 23 24 25 26 27 28 | 1 04 05 06 07 08 09 10
Jul 29 30 01 02 03 04 05 | 2 11 12 13 14 15 16 17
Display posts that will be published in a week after 20/May/2020.
$ pal -f ~/pal/blog-pal.conf -c 0 -d 20200520 -r 7
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This allows me to keep an eye on a blog schedule and plan content ahead of time without leaving the terminal.