Unix timestamp
Amasegonda angahe kuva 1.1.1970? Shakisha kandi uhindure Epoch Posix umwanya kumurongo.
Reba umubare w'amasegonda yashize kuva Mutarama 1970. Iyi ni Unix timestamp ikoreshwa cyane mubumenyi bwa mudasobwa.
Ibihe bya Unix
Hindura hagati ya Unix timestamp na datime
Ibibazo nibisubizo bishimishije kuri Unix timestamp
Niki Unix timestamp?
"Amasegonda yo gusimbuka" ni iki?
Unix ni iki?
Sobanukirwa na Unix Timestamps: Inkingi yumubare wo gukurikirana igihe muri sisitemu ya mudasobwa
Unix timestamp numubare ugereranya umwanya runaka mugihe. Ubusanzwe ikoreshwa mugukurikirana itariki nigihe cyibyabaye muri sisitemu ya mudasobwa, kandi akenshi ibikwa nkigiciro cyashyizweho umukono kigereranya umubare wamasegonda yashize kuva Unix. Igihe cya Unix nicyo gihe cyagenwe mugihe Unix timestamp yashyizwe kuri 0, kandi muri rusange ifatwa nkigicuku cyo ku ya 1 Mutarama 1970, Guhuza Ibihe Byose (UTC).
Unix timestamp isanzwe ikoreshwa muri progaramu ya mudasobwa, cyane cyane mugutezimbere urubuga, kugirango igaragaze itariki nisaha nyayo yibikorwa cyangwa ibikorwa. Kurugero, Unix timestamp irashobora gukoreshwa muguhagararira igihe umukoresha yakoze igikorwa cyihariye kurubuga, cyangwa gukurikirana itariki nigihe cyo gucuruza mububiko.
Imwe mu nyungu zo gukoresha ingengabihe ya Unix ni uko ishobora guhinduka byoroshye mumatariki asomwa numuntu nigihe cyimiterere. Ibi ni ingirakamaro mugihe werekana ingengabihe kubakoresha, cyangwa mugihe ugereranije igihe kugirango umenye igihe gitandukanya ibyabaye bibiri. Guhindura Unix timestamp kumatariki nigihe cyasomwe numuntu nigihe, programmer arashobora gukoresha imikorere cyangwa isomero rishobora guhindura ingengabihe kumiterere yifuzwa.
Usibye kuba ikoreshwa muri porogaramu ya mudasobwa, Unix timestamp nayo ikoreshwa mubindi bice, nka kriptografiya n'umutekano w'urusobe. Kurugero, Unix timestamp irashobora gukoreshwa nkigice cyumukono wa digitale kugirango hamenyekane ukuri kwinyandiko cyangwa ubutumwa.
Muri rusange, Unix timestamp nigikoresho kinini kandi gikoreshwa cyane mugukurikirana no kwerekana amatariki nibihe muri sisitemu ya mudasobwa. Byoroheje byerekana imibare no guhinduka byoroshye bituma ihitamo neza kubikorwa byinshi.
Gusobanukirwa UTC: Isi Yose Ibipimo Bituma Isi Ihuza
Igihe rusange cyo guhuza ibihe (cyangwa UTC), cyahoze cyitwa Coordinated Universal Time (cyangwa UTC), nigihe cyambere cyambere gikoreshwa mu ndege, inganda zitwara ibinyabiziga, hamwe na siyanse na tekiniki. UTC ikoreshwa kandi mumashuri, guverinoma nubucuruzi kugirango sisitemu zabo zikore kuri gahunda imwe. Buri karere gahitamo itariki nigihe cyo gutangira kuva UTC. Buri munsi, UTC ivugururwa saa tatu za mugitondo cya Pasifika (PST) kugeza saa kumi n'ebyiri za nimugoroba PST.
Ubusobanuro bwibihe bya UTC bibarwa noneho ± 0.9 isegonda mugihe ugereranije mugihe cyiminota 30. Isimbuka isegonda yongewe kuri kalendari buri myaka mike kugirango wirinde impinduka muburebure bwumwaka uko Isi izunguruka. Hariho uturere twitwa igihe cyagenwe gishingiye kumijyi cyangwa imijyi itandukanye. Igihe cyibanze cyiswe Greenwich.
Ibihe byigihe bisobanurwa nuburyo akarere kari kure ya meridian yibanze. Kurugero, Amerika ya ruguru ifite umwanya wigihe 12 ukurikije intera iri hagati ya Amerika y'Amajyaruguru Prime Meridian (EPIM). Agace kambere kiswe Greenwich, nyuma ya Royal Greenwich Observatory ya Londere aho ibintu byingenzi byari biherereye mbere y’irimbuka ry’intambara mu Ntambara ya Kabiri y'Isi Yose. Igihe cyibanze cyibanze nkigipimo cyizindi zone kandi gisobanura amasaha yakazi ya buri munsi. Itandukaniro nyamukuru hagati yigihe cyambere nicyiciro cya kabiri nuko zone ya kabiri iri hagati ya dogere 2 na 13 kuri meridian yibanze- kubwibyo, uturere twa offset dukwiranye neza nimyidagaduro nimugoroba cyangwa ibikorwa byubucuruzi.