Ko te putanga kupu mai i te whakahau ki te anga ka tukuna ma te awa stdout (paerewa ki waho). Ka tukuna nga karere hapa mai i te whakahau ma te awa stderr (hapa paerewa).
What is stdout and stderr?
In computer programming, standard streams are interconnected input and output communication channels between a computer program and its environment when it begins execution. The three input/output (I/O) connections are called standard input (stdin), standard output (stdout) and standard error (stderr).
What is the stdout in Linux?
Ko te putanga paerewa, i etahi wa ka whakapotohia te stdout, e tohu ana ki nga awa paerewa o nga raraunga ka mahia e nga kaupapa raina whakahau (arā, nga kaupapa aratau kupu-katoa) i roto i te Linux me etahi atu punaha whakahaere rite Unix. … I tenei keehi, ka kii ki te tono konae kia whai whakaaro ki nga konae katoa kei roto i te raarangi o naianei hei tohenga.
He aha te stdout?
Ko Stdout, e mohiotia ana ko te putanga paerewa te kaiwhakaahua kōnae taunoa ka taea e tetahi tukanga te tuhi putanga. I roto i nga punaha whakahaere rite Unix, penei i te Linux, macOS X, me te BSD, ka tautuhia te stdout e te paerewa POSIX. Ko te nama kaiwhakaahua konae taunoa ko 1. I te tauranga, ka taunoa te putanga paerewa ki te mata o te kaiwhakamahi.
He aha te whakahau stderr i Linux?
Stderr, e mohiotia ana ko te hapa paerewa, he te kaiwhakaahua kōnae taunoa ka taea e tetahi tukanga te tuhi i nga karere hapa. I roto i nga punaha whakahaere rite Unix, penei i te Linux, macOS X, me te BSD, ka tautuhia te stderr e te paerewa POSIX. … I te tauranga, ka taunoa te hapa paerewa ki te mata o te kaiwhakamahi.
Me pehea taku whakatika i te stderr?
Hei whakahoki ano i te stderr, he iti noa nga whiringa:
- Whakahokia te stdout ki tetahi konae ka stderr ki tetahi atu konae: whakahau> puta 2> hapa.
- Whakaarahia te stdout ki te konae ( >out ), katahi ka anga stderr ki stdout ( 2>&1 ): whakahau >out 2>&1.
Does stdout include stderr?
Mena kei te tika taku mohio, ko te stdin te konae e tuhi ana tetahi papatono ki ana tono kia whakahaere i tetahi mahi i roto i te mahi, ko te stdout te konae ka tuhia e te kernel tana putanga me te tukanga e tono ana kia uru atu ki nga korero, a stderr is the file into which all the exceptions are entered.
Me pehea taku kimi stderr i Linux?
Ko te tikanga, ko STDOUT me STDERR nga putanga e rua ki to tauranga. Engari ka taea ki te anga i tetahi me nga mea e rua. Hei tauira, ko nga raraunga ka tukuna ki STDERR e te tuhinga CGI ka mutu ki te konae rangitaki kua tohua ki te whirihoranga a te tūmau tukutuku. Ka taea e te hotaka te tiki korero mo STDERR i runga i te punaha linux.
He aha te whakamahinga o & i roto i te Linux?
te & ka rere te whakahau ki muri. Mai i te man bash : Ki te whakamutua he whakahau e te kaiwhakahaere mana &, ka mahia e te anga te whakahau i te papamuri i roto i te angaroto. Kare te anga e tatari kia mutu te whakahau, ka 0 te mana whakahoki.
Kei hea te stdout i Linux?
Putanga paerewa, pera i hangaia i te wa hanga tukanga, ka haere ki te papatohu, ki to tauranga, ki te tauranga X ranei. Ko te waahi ka tukuna te whakaputanga ka tino whakawhirinaki ki te wahi i puta mai ai te tukanga. ka [whakauru] te konae, ma te taunoa, ki ta tatou putanga paerewa ara i to tatou papatohu, mata kati ranei.
Ka tuhi a printf ki stdout?
Tetahi karanga ki Tuhinga e tā ki stdout, i te wa e karanga ana ki te fprint i te wa tā ki te awa kua tohua. I roto i te tauira hoatu e koe, ka karanga te mahi tuarua tā ki stderr. I te mea kei te ta koe i tetahi aho kau, kare koe e mahi i tetahi mea i runga i ia awa, no reira kare koe e kite i tetahi mea kua puta.
Can you write to stdout?
When you commit to sending output to stdout , you’re basically leaving it up to the user to decide where that output should go. If you use Tuhinga(…) (or the equivalent fprintf(stdout, …) ), you’re sending the output to stdout , but where that actually ends up can depend on how I invoke your program.
Kua tiakina te stdout?
he tika te stdout he kakau kōnae ka hono taunoa ki te papatohu, engari ka taea te anga atu.