Ubuntu 18.x ko mafi girma: bayani idan haɗakar Alt + Imp Pant + REISUB baya muku aiki

Kun san hakan ko da yake Ubuntu yana da ƙarfi, ba koyaushe yake wauta ba. Wasu lokuta, aikace-aikace ko kwaro na iya rataya tsarin kuma ba zai ba ka damar ƙaddamar da na'ura ba don yin kowane aiki ko sake kunna kwamfutar, da dai sauransu. A waɗannan mawuyacin yanayin da ba ku da wata fitarwa, maimakon kashe kayan aikin ta latsawa da riƙe maɓallin kunnawa / kashewa ko tare da maɓallin sake saiti, kuna da wani zaɓi.

Wannan zabin shine latsa hade da madannin yadda suke Alt + Buga allo + REISUB. Wannan ya sa tsarin ya zama mai amsawa kuma ya sake tashi don fita daga wannan daskararren yanayin. Ka tuna cewa dole ne ka riƙe madannin allo na Alt + Print sannan kuma za ka iya danna maɓallan da ke zuwa ɗaya bayan ɗaya ba tare da ka riƙe su duka a lokaci guda ba (a bayyane): R, E, I, S, U, da B. Matsalar shine cewa bazai yi aiki ba a cikin wasu nau'ikan Ubuntu ...

Abin da wannan aikin yake kunna a SysReq (Neman Tsarin) ko buƙata ga tsarin don kwaya ta amsa wannan buƙatar kuma, a wannan yanayin, sake yi tsarin daskararre. Ana amfani da makullin don:

• A: Ya dawo da iko zuwa ga keyboard ko unRaw.
• E: minare duk matakai ko tErm.
• Ni: kashe sauran matakai ko fullkIll.
• S: Yi aiki tare da fayafai ko Aiki tare.
• U - Sanya duk tsarin fayil azaman karanta-kawai ko moasa.
• B: sake kunna kwamfuta ko reBoot.

Idan sigar tsarin ta lalace ta tsohuwa, ana iya gyara ta cikin sauƙi. Domin kunna shi kuma tsarin yana halartar jerin waɗanda ke bin Alt + Imp Pant don yin ayyuka daban-daban (tunda akwai fiye da waɗannan da na nuna), dole ne kuyi haka:

echo "kernel.sysrq = 1" >> /etc/sysctl.d/99-sysctl.conf

Wani zaɓi shine amfani da umarnin da zai biyo baya wannan sakamako:

sysctl -w kernel.sysrq=1

Ka tuna cewa don dokokin da suka gabata kana buƙatar gata, don haka yi shi mafi kyau tare da sudo ko, kasawa hakan, azaman tushe.

Kuma daga yanzu, maɓallin kewayawa suyi aiki ... Ka tuna cewa idan ka canza shi a cikin fayil / proc / sys / kernel / sysrq, zai yi aiki, amma ba zai tsira ba lokacin da ka sake yin tsarin, saboda haka dole ne ka sake shi. Wato bai dawwama.

Ari game da sihiri SysRq

Abin da kawai kuka yi tare da umarni daga na'urar da ta gabata shine canza canjin kwaya don saita shi zuwa ƙimar 1 wanda ke ba da damar duk ayyukan SysRq. Amma dole ne ku sani cewa akwai wasu dabi'u masu yiwuwa, idan kuna sha'awar amfani da su:

• 0 - Kashe SysRq gaba ɗaya.
• 1 - Enable duk abubuwan SysRq.
• > 1: bit mask don ba da izinin wasu ayyuka:
  • 2: yana ba da damar sarrafa na'ura a matakin log.
  • 4: kunna ikon sarrafa keyboard (SAK, kwance)
  • 8 - Enable tsari cire kuskure juji, da dai sauransu.
  • 16: ba da umarnin daidaitawa.
  • 32: yana ba da damar cirewa cikin yanayin karantawa kawai.
  • 64: kunna siginar aiwatarwa (ajali, kashe, oom-kill)
  • 128: ba da damar sake yi / poweroff.
  • 176 - Yana ba da damar aiki tare kawai, sake yi, da sake juyawa a cikin yanayin karanta-kawai
  • 256: yana ba da izinin duk ayyukan RT

Wannan ya ce, ma akwai wasu makullin sihiri banda R, E, S, I, U, B, waɗanda zaku iya amfani dasu don yin wasu buƙatu zuwa tsarin aiki. Ana iya amfani dasu a jere kamar RESIUB, amma kuma an ware, kamar Alt + Screenprint + S, Alt + Screenprint + B, da dai sauransu. Kuma don haka ku san ƙarin damar, ga jerin:

• B: sake yi kwamfutar ba tare da tsaro ba. Wancan ne, ba tare da aiki tare da maɓallan diski ba, ko buɗe fasalin ɓangaren da aka ɗora ba. Wannan na iya haifar da asarar bayanai ko wasu da ake rubutawa a wancan lokacin su gurɓata. Yana kama da latsa maɓallin sake saiti na jiki ko latsa maɓallin ON / KASHE na wasu kayan aikin hannu ko AIO.
• C: tilasta haɗari, zubar da babban tsarin ƙwaƙwalwar ajiya zuwa faifai.
• D: zai hau makullin tsarin.
• E: yana aika siginar SIGTERM ga dukkan matakai sai dai init / systemd / upstart,… Wato, yana kashe duk wani tsari da yake gudana banda wancan.
• F: kira ga OOM Kill, don warware wasu lokuta lokacin da tsarin ya fita daga ƙwaƙwalwa.
• G: shigar da yanayin cire kuskure, ta amfani da framebuffer.
• H: zai nuna taimako akan amfani da SysRq.
• J: tilasta daskarewa na tsarin fayiloli ko tsarin fayil ta amfani da FIFREEZE.
• K: kashe duk matakan wasan bidiyo da kuke amfani da su. Hakanan ya haɗa da zane.
• L: yana nuna tarin baya na dukkan CPUs masu aiki a cikin tsarin. Idan akwai wasu marasa aiki ko masu hannu da hannu, ba zai nuna komai game dasu ba.
• M: yana nuna bayani daga ƙwaƙwalwarka.
• N: sake saitawa zuwa kyawawan ladubba don duk babban fifiko da tsarin RealTime. Hakan zai rage matsalolin rikice-rikicen albarkatu.
• Ko: zai rufe kwamfutar gaba ɗaya. Wato, baya yin bacci kamar dakatarwa.
• P: show rajista da tutoci.
• Tambaya: Nuna duk masu kidaya lokaci da kuma agogo
• A: Canza yanayin faifan maɓalli daga RAW zuwa XLATE.
• S: zai yi aiki tare da buff na diski ko diski, ma'ana, tunanin da ke adana ayyukan shiga don aiwatarwa. Don haka bayananku ba zasu lalace ba idan kun cire drive ko kuma idan kun sake farawa ba zato ba tsammani.
• T: yana nuna jerin ayyuka.
• U: canza yanayin hawa hawa zuwa yadda za'a karanta shi kawai ko kuma kawai za'a iya karanta shi.
• V: tilasta sake saiti na framebuffer console.
• W: yana nuna maka jerin ayyukan da aka toshe.
• Spacebar: zai nuna maɓallan SysRq na sihiri da ake samu akan kwamfutarka.

Ka tuna cewa ba duk waɗannan zasuyi aiki a duk hanyoyi ba ...