"This Week" script: in bash, awk, or whatever.

[musher0]

Hello, puppy_apprentice and all.

(...)I don't have <nl> command in my Slacko 5.7 (...)

If anybody needs it:

nl (GNU coreutils) 8.25
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Scott Bartram and David MacKenzie.

The attached one is from my XenialPup-706. If it does not work on your
Pup, the latest original is in this pile! You'll have to compile it, though.

IHTH.

~~~~~

@fredx181:
Doing our best to get a smile out of you!
You're more than welcome to chip in if inspired, BTW.

@puppy_apprentice:

(...)I (...) have idea for console pim - THE OSMO KILLER

Go-go-go, puppy_apprentice!
With your creativity, OSMO's domination is sooo over!

BFN.

[puppy_apprentice]

I just can't get enough I'm starting to be addicted to bash.

Version with 2 random colors for headers:

Code: Select all

sn=$(echo -e "0\n15"); s=($sn); en=$(echo -e "9\n24"); e=($en); r=$((RANDOM%2)); l=$(cal | tail -n +3 | grep -wn --color=always "$(date +%-d)"); echo "${l:s[$r]:6}"; cal | head -n 2; echo -e "${l:e[$r]:3}${l:30} (${l:0:12})\n"

[musher0]

Hello, puppy_apprentice_"no_more"!

You lost me, there!
Please explain what you're doing, to us simple mortals?

Thanks.

[puppy_apprentice]

I think that you know all the bash magic like Mochi, but ok i will explain my tricks:

1)

Code: Select all

l=$(cal | tail -n +3 | grep -wn --color=always "$(date +%-d)")

this store in var l eg:

Code: Select all

X14X2Y1:Y218 19 20 21 22 23 24

where X1/X2 - starts/ends ANSI code for color green and Y1/Y2 starts/ends ANSI code for color light blue.

2)

Code: Select all

sn=$(echo -e "0\n15"); s=($sn); en=$(echo -e "9\n24"); e=($en); r=$((RANDOM%2));

looks better in that view:

Code: Select all

sn=$(echo -e "0\n15")
s=($sn)
en=$(echo -e "9\n24")
e=($en)
r=$((RANDOM%2));

make two arrays with colors coordinates in string stored in var l, s for starting coordinates and e - for ending coordinates:
for green: X1 = 0, X2 = 9
for l. blue: Y1 = 15, Y2 = 24

r store 0 or 1, so if we get 0 we get start/end X1/X2 coordinates for ANSI code for color green

3) that we can put there:

Code: Select all

echo "${l:s[$r]:6}"; cal | head -n 2; echo -e "${l:e[$r]:3}${l:30} (${l:0:12})\n"

[nosystemdthanks]

useful: https://explainshell.com/

but this example is too much for it.

[puppy_apprentice]

musher0 this code you can use in your scripts:

Code: Select all

#!/bin/sh
colors=$(echo -e "34\n35\n36\n37"); colmatrix=($colors); r=$((RANDOM%4)); echo -e "\e[${colmatrix[$r]}m Hello World! \e[0m"

[musher0]

@puppy_apprentice:

Your modesty is quite to be commended. But judging by your recent output,
I'd say that you're well on your way of surpassing at least this supposed
"Bash magic" master... (I.e. me.)

That's fine, and please go for it! I have serious reservations about the
traditional concept of "competition", but I'm all for "emulation".

My best wishes to you in this!

BFN.

[puppy_apprentice]

I was thinking about your ThisWeek.sh script in wich you use ANSI codes.

Ok. I have some experience with other programming languages but i'm not fluent in any.

I think that for example i won't write this kind of sed game:

https://aurelio.net/projects/sedsokoban/

Have a nice day/evening all.

[musher0]

Thanks for the feedback, puppy_apprentice.

~~~~~~~~~~~
@all:

If anyone is interested, I have made available the latest version of
coreutils, version 8-30, for PuppyLinux, here.

To anyone wondering: the link with this thread is that the GNU coreutilis
contain, among many others, three utilities used in various scripts in this
thread: cal (the full version), date and nl.

BFN.

[musher0]

Hello all.

In lieu of < nl > to number lines, one can use < cat -n >:

Code: Select all

>echo;cal | grep -v [[:alpha:]] | cat -n | grep --color=always "$(date '+%d')"

Also possible for this is the use of < grep -n >, as mentioned somewhere
above by puppy_apprentice IIRC:

Code: Select all

echo;cal | grep -v [[:alpha:]] | grep -n --color=always "$(date '+%d')" | tr ":" "\t";echo -e "\e[1A\e[1Cth wk:"

This is completed by a replacement, through < tr >, of the colon by a tab,
and then we insert for information the string "th wk:" between the week
number and the line of dates, through a couple of ANSI escape codes.

We can decorate it like so:

Code: Select all

echo;echo -e "\t      \e[33m\e[4m`date '+%b %Y'`\e[0m";cal | grep -v [[:alpha:]] | grep -n --color=always "$(date '+%d')" | tr ":" "\t";echo -e "\e[1A\e[1Cth wk:";echo -e "\t\e[33m`cal | grep -v [[:digit:]]`\e[0m"

Scrot attached.

BFN.

[fredx181]

If anyone is interested, I have made available the latest version of
coreutils, version 8-30, for PuppyLinux, here.

To anyone wondering: the link with this thread is that the GNU coreutilis
contain, among many others, three utilities used in various scripts in this
thread: cal (the full version), date and nl.

Hi musher0, I couldn't find 'cal' in your pet.
On my Debian stretch system none of codes here work unless I change 'cal' to 'busybox cal' (not a problem, btw, just curious about 'cal (the full version)'.
(on my system /usr/bin/cal is symlink to /usr/bin/ncal part of package bsdmainutils)

Fred

[musher0]

If anyone is interested, I have made available the latest version of
coreutils, version 8-30, for PuppyLinux, here.

To anyone wondering: the link with this thread is that the GNU coreutilis
contain, among many others, three utilities used in various scripts in this
thread: cal (the full version), date and nl.

Hi musher0, I couldn't find 'cal' in your pet.
On my Debian stretch system none of codes here work unless I change 'cal' to 'busybox cal' (not a problem, btw, just curious about 'cal (the full version)'.
(on my system /usr/bin/cal is symlink to /usr/bin/ncal part of package bsdmainutils)

Fred

By golly, you're right, Fred.
I mistook cat for cal...
Sorry about that. (Note to myself : must get new glasses...)

Back hunting. TWYL.

~~~~~~~~~~~
Edit, 5 minutes later --
cal is part if the utils-linux package, whose latest source is here.

Edit, an hour later --
I have compiled the latest utils-linux package, version 2.33, for
PuppyLinux. It is available through here.

Again thanks to Fredx181 for having a falcon's eye.

BFN.

[MochiMoppel]

Also possible for this is the use of < grep -n >, as mentioned somewhere
above by puppy_apprentice IIRC:

Code: Select all

echo;cal | grep -v [[:alpha:]] | grep -n --color=always "$(date '+%d')" | tr ":" "\t";echo -e "\e[1A\e[1Cth wk:"

There is more to learn from puppy_apprentice's code:
Reread how he fixed the date command to prepare for single digit dates and how he uses the -w option for the grep command, a clever trick. On the first day of the month grep will match only '1' but not '10' or '21'

[musher0]

Hi, MM.

I'm sure. But not now, please.

Back later.

[fredx181]

I have compiled the latest utils-linux package, version 2.33, for
PuppyLinux. It is available through here.

Thanks, the cal included works fine for me.

P.S. see screenshot , running just cal, note that 'busybox cal' is not translated, cal from utils-linux and ncal are in Dutch, as my system locale is set (and ncal looks very different)
(and translated, the week goes from monday to sunday)

Fred

[musher0]

@fredx181:
With the "real" < cal >, you have to say < cal -s > for the week to start
on Sunday.

[musher0]

@MochiMoppei and puppy_apprentice:
I studied it, but I really do not understand the random color part in
puppy_apprentice's script. Worse: I do not understand the need for it!

In particular, the part X1X2, etc. and the line of dates. How do you get
that XIX2, etc. part to appear? In an hex editor? I could not reproduce
it by any means I know.

Sorry.

~~~~~~~~~~
I did catch the need for < grep -wn $(date '+%d'>, however; not just
< grep -n >.

And MM, any reason why your syntax is different than mine for
< date '+%d' >? They give the same result.

BFN.

[fredx181]

@fredx181:
With the "real" < cal >, you have to say < cal -s > for the week to start
on Sunday.

Ah, ok, btw for me with LANG=en_US the week starts automatically on Sunday without the -s switch :

Code: Select all

root@live:~# LANG=en_US cal  # full cal
    November 2018   
Su Mo Tu We Th Fr Sa
             1  2  3
 4  5  6  7  8  9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30  

So somehow it seems to detect which locale.

Fred

[musher0]

Hi Fred.

Thanks for the feedback.

The authors must've improved it. In older versions that I've used, the -s
was needed if you wanted the week to start on Sunday.

As well, you may have noticed that the real cal highlights today's date,
whereas the busybox cal does not.

BFN.

[MochiMoppel]

And MM, any reason why your syntax is different than mine for
< date '+%d' >? They give the same result.

Exactly which syntax are you referring to?