Ko te tono tino whakamahia hei whakaatu i nga taurangi taiao ko printenv . Mena ka tukuna te ingoa o te taurangi hei tohenga ki te whakahau, ko te uara o taua taurangi anake ka whakaatuhia. Mena karekau he tautohenga i tohua, ka taia e printenv he rarangi o nga taurangi taiao katoa, kotahi taurangi mo ia raina.
Me pehea e whiwhi ai ahau i te uara o te taurangi i roto i te bash?
Inaianei, ma te whakamahi i te whakahau echo ka taea e taatau te whakaatu noa i tona uara ki te tauranga penei:
- $ var_a=100. $ echo $var_a.
- $ var_b = "taurangi echo programming bash" $ echo $var_b.
- $ var_A=”hellofriends” $ var_B=50. $ echo $var_A$var_B.
- $ var1=$(rā) $ var2=$(ingoa kaihautū) $ echo “te rā ko $var1 @ ingoa rorohiko ko $var2”
Me pehea koe e paoro ai i te uara o te taurangi?
Hei whakaatu i te uara o tetahi taurangi, whakamahia te tono echo, printf ranei penei:
- echo $varName # kare e pai ki te kore koe e mohio he aha kei roto i te taurangi.
- echo "$varName"
- printf “%sn” “$varName”
Me pehea koe e tuhi ai i tetahi uara taurangi ki Unix?
Hei tā i te uara o nga taurangi o runga ake nei, whakamahia te whakahau paoro penei i raro nei:
- # echo $HOME. # echo $USERNAME.
- $ cat myscript.
- #!/bin/bash. # whakaatu nga korero kaiwhakamahi mai i te punaha. …
- $ echo “Ko te utu o te taonga he $15”…
- $ echo “Ko te utu o te taonga he $15”…
- var1=10. …
- $ ngeru whakamatautau3. …
- Ko te whakahaere i te tuhinga ka puta te putanga e whai ake nei:
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.
Me pehea koe e tuhi ai i tetahi taurangi ki te linux?
Sh, Ksh, Bash anga kaiwhakamahi patohia te whakahau kua whakaritea. Csh or Tcsh kaiwhakamahi pato te whakahau printenv.
Me pehea koe e whakahua ai i tetahi taurangi i roto i te anga?
Hei tauira, Whakaatuhia he taurangi o x ka tautapa i tona uara=10. Tuhipoka: Ko te kōwhiringa '-e' i roto i te Linux ka mahi hei whakamaoritanga o nga tohu kua mawhiti kua whakamuri.
...
echo Kōwhiringa.
kōwhiringa | Whakaahuatanga |
---|---|
-n | kaua e tā i te raina hou e whai ana. |
-e | Whakahohehia te whakamaoritanga o nga rerenga whakamuri. |
b | tuakiri |
\ | whakamuri |
Me pehea te mahi o nga tuhinga bash?
Ko te tuhinga Bash he konae tuhinga noa he raupapa whakahau kei roto. Ko enei whakahau he ranunga o nga whakahau ka patohia e matou ki runga i te raina whakahau (penei i te ls, cp ranei hei tauira) me nga whakahau ka taea e matou te pato ki te raina whakahau engari kaore (ka kitea e koe enei i nga wharangi e whai ake nei. ).
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 ki UNIX?
Tautuhia nga taurangi taiao ki UNIX
- I te tere o te punaha i runga i te raina whakahau. Ina tautuhia e koe he taurangi taiao i te tere o te punaha, me tautapa ano koe i te wa e whai ake nei ka takiuru koe ki te punaha.
- I roto i te konae whirihoranga taiao penei i te $INFORMIXDIR/etc/informix.rc ranei .informix. …
- I roto i to .profile, .login file ranei.
Me pehea e hanga ai he taurangi ki Linux?
Taurangi 101
Hei hanga taurangi, ko koe homai noa he ingoa me te uara mo taua mea. Ko o ingoa taurangi me whakamaarama me te whakamahara ki a koe mo te uara e mau ana. Kare e taea e te ingoa taurangi te tiimata me te tau, karekau hoki e whai waahi. Ka taea, heoi, ka timata ma te tohu raro.
Me pehea taku kaweake i tetahi taurangi i roto i te anga?
Kaweake anga taurangi (tuku anga whakahau)
Ka taea e koe te whakamahi i te whakahau kaweake ki te hanga taurangi rohe ki te ao. Kia huri aunoa i o taurangi anga a rohe ki te ao, kaweake i roto i to . kōnae kōtaha. Tuhipoka: Ka taea te kaweake i nga taurangi ki nga anga tamariki engari kaua e kawea ki nga maa matua.
Me pehea taku huri i te taurangi PATH i Linux?
Kia mau tonu te huringa, tomohia te whakahau PATH=$PATH:/opt/bin ki to whaiaronga whare. kōnae bashrc. Ina mahi koe i tenei, kei te hanga koe i tetahi taurangi PATH hou ma te taapiri i tetahi raarangi ki te taurangi PATH o naianei, $PATH . He kopirua ( : ) ka wehe i nga whakaurunga PATH.