BASH/C2/Logical-Operators/Khasi

Time	Narration
00:01	Paralok baieid, ngi pdiangsngewbha ia phi sha ka Spoken tutorial halor ka Logical Operators haBash.
00:07	Ha kane ka jinghikai, ngin pule shaphang ki jingpyndonkam jong
00:10	Logical NOTda kaba pyndonkam ia ki katto katne ki nuksa.
00:19	Ban bud ia kane ka jinghikai, phi dei ban tip bad nang ia ka Linux Operating System.
00:22	if-else statement command line arguments bad quoting ha BASH.
00:30	Lada phim pat tip, te na ka bynta ki jinghikai ba iadei, leit sha ka website jong ngi kumba la pyni hangne
00:36	Na ka bynta kane ka jinghikai, nga pyndonkam :
00:38	Ubuntu Linux 12.04 OS
00:43	GNU Bash version 4.1.10
00:47	ka GNU Bash version 4 lane kiba kham shajrong la ai jingmut na ka bynta ka jinghikai
00:53	To ngin peit ban sngewthuh ia ka jingdonkam jong ki Logical-operators.
00:57	Logical operators bunsien la ju pyndonkam ban teh lakam ia ka jingiaid ka program.
01:02	Logical operators ki iarap ban link ia artylli ki expressions lane conditions.
01:09	Ki lah ban dei ka bynta jong if, while lane kiwei pat ki control statements.
01:15	To ngin peit ia ka syntax jong ka logical AND.
01:19	Opening square-bracket space dollar symbol condition1 space closing square-bracket space ampersand ampersand space opening square-bracket space dollar symbol condition2 space closing square-bracket.
01:38	Lane ngi lah ban pyndonkam ia kane ka syntax-
01:41	Opening square-bracket space dollar symbol condition1 space hyphen-a space dollar symbol condition2 space closing square-bracket.
01:53	Logical AND u return True haba baroh artylli condition1 bad condition2 kidei True.
02:00	To ngin iapeit ia ka syntax jong Logical OR.
02:04	Opening square-bracket space dollar symbol condition1 space closing square-bracket space vertical bar again vertical bar space opening square-bracket space dollar symbol condition2 space closing square-bracket.
02:22	Lane ngi lah ban pyndonkam ia kane ka syntax-
02:24	Opening square-bracket space dollar symbol condition1 space hyphen-o space dollar symbol condition2 space closing square-bracket.
02:36	Logical OR u return True haba kawei na ki condition1 lane condition2 kadei True.
02:43	To ngin pule ia ka jingdonkam jong ka Logical OR bad Logical AND da kaba pyndonkam ia kawei ka nuksa.
02:50	Nga la dep type lypa ia u code ha ka file ba kyrteng logical.sh.
02:55	Plie ia ka terminal da kaba nion ctrl+alt bad t keys ha kajuh ka por na ka keyboard jong phi.
03:04	Type: gedit space logical.sh space ampersand sign,nion Enter.
03:12	Mynta type ia u code kumba la pyni hangne , ha ka "logical.sh" file jong phi.
03:18	To ngan batai ia u code mynta.
03:21	Kane kadei ka shebang line.
03:25	Ka read command ka shim lane pule ia kawei ka lain jong ka data na ka standard input.
03:29	- (hyphen) p u pyni ia u prompt.
03:33	string udei u variable uba buh ia ka text ba la pyndap da u user , ha ka por ba execute.
03:39	Ka if statement ka check la u string ba la pyndap u long empty ne em
03:45	- (hyphen) z u check la ka jingjrong jong u string kadei zero.
03:50	Type: man space test ha ka terminal ban wad ia kiwei pat ki string comparisons.
03:57	Ka echo statement kan print ia ka message lada khlem pyndap eiei.
04:02	Lada u string u don eiei, ka program kan iaid sha ka elif statement ba nyngkong
04:08	Hangne, ka check la u string ba la pyndap u don baroh ar tylli ki kyntien "raj" bad "jit".
04:16	Lada haoid , te un sa echo ia kawei ka message.
04:20	Sngewbha buh jingkynmaw ba ka logical AND la pyndonkam hangne
04:24	Te kumta, ka message yn sa pyni tang lada baroh ar tylli ki conditions ki iadei.
04:31	Lada kam long kumta, te ka program kan iaid noh sha ka elif statement kaba ar
04:37	H angne, ka check la u string ba la pyndap u don kawei na kine, "raj" lane "jit".
04:43	Lada ‘yes’ te ka pyni ia ka message.
04:47	Sngewbha buh jingkynmaw ba ka logical OR la pyndonkam hangne
04:52	Ka message kan sa paw tang lada kawei na kine ki conditions ki iadei.
04:59	Khatduh eh , ngi don ia ka default else statement.
05:02	Lada baroh ki statements ba hajrong kidei False te, kane ka statement kan sa execute.
05:08	"fi" kadei kaba kut jong ka multilevel if-else loop.
05:12	To ngin execute ia ka program.
05:15	Phai biang sha ka terminal.
05:17	Nyngkong pynlong ia ka file ban execute da kaba type: chmod space plus x space logical dot sh nionEnter.
05:30	Mynta type: dot slash logical.sh nionEnter.
05:36	U prompt u pyni "Enter a word:"
05:38	Ngan pyndap "jitinraj" .
05:42	Ka output kadei: "jitinraj contains both the words 'raj' and 'jit' ".
05:48	Kane ka mut ba u control la phah sha ka statement kaba ar.
05:52	Bad namar ba baroh artylli ki conditions ki iadei, te ka pyni ia ka message.
05:57	Mynta , to ngin executeia ka script sa shisien.
06:00	Nion ia u up-arrow key.
06:02	Leit sha ./logical.sh nion Enter.
06:07	U prompt u pyni "Enter a word:"
06:09	Mynta ngan pyndap "abhijit".
06:13	Ka output ka paw kum :"abhijit contains the word 'raj' or 'jit'".
06:19	Sngewbha pyrshang ban execute ia ka program da ki input bapher bapher bad peit ia ka output.
06:25	To ngin phai biang sha ki slides jong ngi.
06:27	To ngin iapeit ia ka logical NOT operator.
06:31	Ka invert lane pynkylla ia ka Boolean value jong ka expression.
06:35	Kaba mut ka return True lada ka expression kadei False
06:40	Bad ka return False lada ka expression kadei True.
06:44	Ka syntax jong ka logical NOT operator kadei-
06:48	Exclamation mark space expression
06:52	Lane opening square-bracket space exclamation mark space expression space closing square-bracket.
07:00	To ngin peit ia kawei ka nuksa.
07:03	Nga la dep type lypa ia u code ha ka file.
07:05	Te, ngan leit sha ka terminal bad type: gedit space logicalNOT dot sh space ampersand sign, nion Enter.
07:18	Mynta type ia u code kumba la pyni hangne, ha ka logicalNOT dot sh file jong phi.
07:24	Kane kadei ka shebang line kumba ngi la tip lypa.
07:28	$1 udei u command line argument ba nyngkong ba la passed sha ka script.
07:33	- (hyphen) f u check la ka file ka don da ka juh ka kyrteng kaba la passed kum ka argument.
07:41	Te, kan return True lada ka file ka don bad False lada kam don.
07:48	Une u NOT operator, u pynkylla ia u returned value
07:52	Kaba mut, lada ka file da kata ka kyrteng ka don, ka condition kan dei True.
07:58	Tangba u NOT operator u pynkylla ia u value jong u sha False.
08:02	Bad un sa pyni ia ka message "FILE does not exist".
08:07	Hangne, ha ka else statement, ka pyni ia ka message FILE exists.
08:13	"fi" u kdew ia ka jingkut jong ka if loop.
08:16	Mynta phai biang sha ka terminal.
08:18	To ngan clear ia u prompt.
08:20	To ngin shna ia kawei ka file bathylli da ka kyrteng test.txt.
08:25	Type : touch space test dot txt nion Enter.
08:32	Nangta pynlong ia ka script executable da kaba type: chmod space plus x space logicalNOT dot sh nion Enter.
08:45	Mynta , type: dot slash logicalNOT dot sh space test dot txt nion Enter.
08:55	Ka shell script jong ngi kan check la ka file ka don ne em.
09:00	Ka file test dot txt jong ngi ka don, kumta u value un dei True.
09:07	Nangta u logical NOT un pynkylla ia u value bad return False.
09:12	Namar ba ka evaluation kadeiFalse, ka else statement ka shah evaluate.
09:18	Bad ka message kaba la pyni kadei -File 'test.txt' exists.
09:23	Pyrshang ban execute ia ka program sa shisien ryngkat bad ka argument test1.txt.
09:29	Bad peit ia ka jingiaid u control flow kumba la batai hashwa.
09:33	Phai biang sha ki slides jong ngi. To ngin batai kyllum
09:37	Ha kane ka jinghikai, ngi la pule ia ki jingdonkam jong: logical AND logical OR bad logical NOT.
09:45	Kum ka kam na ka bynta jong phi.
09:47	Check la ka file ka don ne em
09:49	Bad ka long ban execute
09:51	Da kaba pyndonkam logical operators ba la batai ha kane ka jinghikai
09:56	(Hint: man space test)
09:59	Peit ia ka video ba don ha ka link ba la ai harum
10:02	Ka batai kyllum ia ka Spoken-Tutorial project.
10:05	Lada phim don ia ka bandwidth kaba biang , phi lah ban shu download bad peit ia ka .
10:09	Ka kynhun jong ka Spoken-Tutorial Project
10:12	Ka pynlong ia ki workshops da kaba pyndonkam da ki spoken tutorials.
10:15	Ka ai sertiphikate sha kito kiba pass ha ka online test.
10:19	Na ka bynta ki jingtip ba bniah, sngewbha thoh sha ka contact@spoken-tutorial.org
10:26	Spoken Tutorial Projek kadei shibynta jong ka "Talk to a Teacher" projek.
10:30	La kyrshan ia ka da ka National Mission on Education lyngba ka ICT, MHRD, Sorkar India.
10:37	Kham bun ki jingtip halor kane ka mission kidon ha ka link ba la ai harum http://spoken-tutorial.org/NMEICT-Intro
10:42	Kane ka script la noh synniang da ka FOSSEE bad ka kynhun jong ka Spoken-Tutorial .
10:47	Bad nga I Meboreen na Shillong , nga pynkut ia kane.
10:51	Khublei shibun ia ka jingsnohkti lang jong phi.

Contributors and Content Editors

Meboreen Mary