He rarangi o nga taurangi e whakamahia nuitia ana i Linux. Ka whakamahia e matou te whakahau printf/echo ki te whakaatu i nga uara o te anga rereke i Linux.
Ko tehea tono ka whakamahia hei whakaatu uara taurangi?
whakarāpopototanga:
| Whakahaua | Whakaahuatanga |
|---|---|
| echo $ VARIABLE | Hei whakaatu uara o tetahi taurangi |
| env | Ka whakaatu i nga taurangi taiao katoa |
| VARIABLE_NAME= taurangi_uara | Waihangahia he taurangi hou |
| wetewete | Tango taurangi |
Me pehea e whakaatu ai koe i tetahi taurangi i UNIX?
Sh, Ksh, Bash anga kaiwhakamahi patohia te whakahau kua whakaritea. Csh or Tcsh kaiwhakamahi pato te whakahau printenv.
Me pehea taku tuhi i tetahi uara rereke ki Linux?
Hipanga # 2: Te Tuhi Papatono Tā ki te Hōtuhi Bash:
Na kua whakamahia e matou te whakahau echo ki te tā i te uara o tenei taurangi. I tua atu, kua whakamahia ano e matou te whakahau printf ki te mahi i te kaupapa ano. I muri i te tuhi i tenei papatono i roto i to konae Bash, me tiaki e koe ma te pehi Ctrl +S ka kati.
Ko tehea whakahau e whakaatu ana i to karere ki te mata?
Ko tetahi atu mahi reo C e whakaatu ana i nga tuhinga ki te mata printf(), he tino kaha ake i te puts() a he maha ake te whakamahi. Ahakoa ko te mahi puts() he whakaatu noa i nga kupu ki te mata, ko te mahi printf() ka whakaatu i nga tuhinga kua whakahōputuhia. Ma tenei ka nui ake te mana whakahaere mo te putanga.
Ko tehea tono ka whakamahia mo te whakaatu karere?
Nga Karere Whakaatu (DSPMSG) Ko te whakahau e whakamahia ana e te kaiwhakamahi teihana whakaatu hei whakaatu i nga karere kua riro mai i te rarangi karere kua tohua.
Me pehea te tautuhi uara ki tetahi taurangi i UNIX?
Unix / Linux – Whakamahi Taurangi Anga
- Te Tautuhinga Taurangi. Kua tautuhia nga taurangi e whai ake nei − ingoa_huarangi=uara_taurangi. …
- Te Uru uara. Hei uru atu ki te uara kua penapena ki tetahi taurangi, whakamuahia tona ingoa ki te tohu taara ($) −…
- Taurangi Panui-anake. …
- Whakakore Tautuhinga Taurangi.
Me pehea taku kaweake i tetahi taurangi ki Linux?
Kia mau tonu ai te taiao mo te taiao o te kaiwhakamahi, ka kaweake e matou te taurangi mai i te tuhinga whakaahua a te kaiwhakamahi.
- Whakatūwherahia te kōtaha o te kaiwhakamahi o nāianei ki te ētita kuputuhi. vi ~/.bash_profile.
- Tāpirihia te whakahau kaweake mo ia taurangi taiao e hiahia ana koe kia mau tonu. kaweake JAVA_HOME=/opt/openjdk11.
- Penapena o huringa.
Me pehea e tautuhi ai koe i tetahi taurangi i roto i te bash?
Ko te huarahi ngawari ki te tautuhi i nga taurangi taiao i Bash ko te whakamahia te kupu "kaweake" ka whai i te ingoa taurangi, he tohu rite me te uara hei tautapa ki te taurangi taiao.
He aha te kaupapa o Unix?
Ko Unix he punaha whakahaere. Ko e tautoko ana i te mahi maha me te mahi maha-kaiwhakamahi. Kei te tino whakamahia a Unix i roto i nga ahuatanga katoa o nga punaha rorohiko penei i te papamahi, pona, me nga kaitoro. I runga i te Unix, he atanga kaiwhakamahi Whakairoiro e rite ana ki nga matapihi e tautoko ana i te whakatere ngawari me te taiao tautoko.
Me pehea e kitea ai e au te huarahi i Linux?
Mo tenei Tuhinga
- Whakamahia echo $PATH ki te tiro i o taurangi ara.
- Whakamahia te kimi / -ingoa “ingoakōnae” –type f tā hei kimi i te huarahi katoa ki te konae.
- Whakamahia te PATH kaweake=$PATH:/new/directory to add a new directory to the path.