Nohup, short for no hang up is a command in Linux systems that keep processes running even after exiting the shell or terminal. Nohup prevents the processes or jobs from receiving the SIGHUP (Signal Hang UP) signal. This is a signal that is sent to a process upon closing or exiting the terminal.
What is the use of nohup command in Linux?
The nohup na-anọchi anya enweghị nkwudo, ọ bụ ọrụ Linux nke ahụ na-eme ka usoro ahụ na-aga n'ihu ọbụlagodi mgbe ịpụsịrị ọdụ ma ọ bụ shei. Ọ na-egbochi usoro ahụ ịnweta akara SIGHUP ( Signal hang up ); A na-eziga akara ngosi ndị a na usoro iji kwụsị ma ọ bụ kwụsị usoro.
Gịnị mere anyị chọrọ nohup?
Mgbe ị na-eme nnukwu mbubata data na onye ọbịa dịpụrụ adịpụ, dịka ọmụmaatụ, ịnwere ike iji nohup na hụ na ịkwupụ njikọ agaghị eme ka ị malite ọzọ mgbe ị jikọọ ọzọ. A na-ejikwa ya ma ọ bụrụ na onye nrụpụta anaghị ewepụ ọrụ ahụ nke ọma, yabụ ị ga-eji nohup hụ na egbughị ya mgbe ị pụta.
Kedu otu m ga-esi agba iwu nohup?
Iji mee iwu nohup n'azụ, tinye & (ampersand) na njedebe nke iwu. Ọ bụrụ na egosipụtara njehie ọkọlọtọ na njedebe ma ọ bụrụ na egosipụtaghị mmepụta ọkọlọtọ na njedebe, ma ọ bụ zigara ya na faịlụ mmepụta nke onye ọrụ akọwapụtara (faịlụ mmepụta ndabara bụ nohup. out), ma ./nohup.
Kedu ka m ga-esi na-agba ọsọ script nohup na Linux?
nohup Command syntax:
iwu-aha : bụ aha nke shei script ma ọ bụ iwu aha. Ị nwere ike ịnyefe arụmụka maka iwu ma ọ bụ edemede shei. & : nohup anaghị etinye iwu ọ na-arụ n'azụ; ị ga-emerịrị nke ahụ n'ụzọ doro anya, site na na-eji akara & akara mechie ahịrị iwu.
Kedu ihe dị iche n'etiti nohup na &?
nohup na-enweta mgbama hangup (lee nwoke 7 mgbaàmà) mgbe ampersand adịghị (ma e wezụga shei na-emegharị otú ahụ ma ọ bụ na-ezigaghị SIGHUP ma ọlị). Dị ka ọ na-adịkarị, mgbe ị na-eji & ma na-apụ na shei ahụ ma emechaa, shei ahụ ga-eji akara hangup kwụsị iwu sub-iwu ( igbu -SIGHUP ).
Kedu ihe kpatara nohup anaghị arụ ọrụ?
Re: nohup anaghị arụ ọrụ
Shei ahụ nwere ike na-agba ọsọ yana njikwa njikwa ọrụ. … Ọ gwụla ma ị na-agba shei amachibidoro, onye ọrụ kwesịrị ịgbanwe ntọala a. Gbaa "stty -a | grep tostop". Ọ bụrụ na edobere nhọrọ "tostop" TTY, ọrụ ndabere ọ bụla na-akwụsị ozugbo ọ nwara iwepụta mmepụta ọ bụla na njedebe.
Gịnị kpatara nohup na-eleghara ntinye anya?
nohup bu na-agwa gị kpọmkwem ihe ọ na-eme, na ọ na-eleghara anya ntinye. "Ọ bụrụ na ntinye ọkọlọtọ bụ ọnụ, bugharịa ya na faịlụ a na-agụghị." Ọ na-eme ihe kwesiri ime, n'agbanyeghị ndenye nhọrọ, ya mere a na-atụfu ntinye.
Kedu ka m ga-esi mara ma ọrụ na-agba na nohup?
Azịza 1
- Ịkwesịrị ịma pid nke usoro ịchọrọ ile anya. Ị nwere ike iji pgrep ma ọ bụ ọrụ -l: ọrụ -l [1] - 3730 Na-agba ọsọ ụra 1000 & [2]+ 3734 Na-agba ọsọ nohup ụra 1000 & ...
- Lee anya na /proc/ /fd .
Kedu ka esi eji ajuju?
Iwu a jụrụ ajụ bụ arụnyere n'ime ya na-arụ ọrụ na shells dị ka bash na zsh. Iji ya, ị pịnye "ịjụjụ" sochiri usoro ID (PID) ma ọ bụ usoro ịchọrọ ịgọnarị.
How do I redirect nohup output?
Redirecting Output to a File
Site na ndabara, nohup redirects the command output to the nohup. out file. If you want to redirect the output to a different file, use the standard shell redirection.
What is nohup file?
nohup bu a POSIX command which means “no hang up”. Its purpose is to execute a command such that it ignores the HUP (hangup) signal and therefore does not stop when the user logs out. Output that would normally go to the terminal goes to a file called nohup.