{"id":619,"date":"2018-10-26T23:04:25","date_gmt":"2018-10-26T20:04:25","guid":{"rendered":"https:\/\/blog.nav.ro\/?p=619"},"modified":"2019-03-21T10:49:40","modified_gmt":"2019-03-21T08:49:40","slug":"trucuri-linux-ce-va-pot-scuti-de-probleme","status":"publish","type":"post","link":"https:\/\/www.nav.ro\/blog\/trucuri-linux-ce-va-pot-scuti-de-probleme\/","title":{"rendered":"Trucuri Linux ce v\u0103 pot scuti de probleme"},"content":{"rendered":"\n<p>Exist\u0103 anumite trucuri pentru linia de comand\u0103 Linux care nu doar v\u0103 vor ajuta s\u0103 economisi\u021bi timp ci \u0219i s\u0103 evita\u021bi anumite probleme. De asemenea, v\u0103 vor ajuta s\u0103 v\u0103 aminti\u021bi \u0219i s\u0103 reutiliza\u021bi anumite comenzi complexe. \u00cen acest fel va va fi mai u\u0219or s\u0103 v\u0103 concentra\u021bi asupra a ceea ce trebuie s\u0103 face\u021bi, nu cum ar trebui s\u0103 face\u021bi acest lucru. \u00cen acest post, vom examina c\u00e2teva trucuri de linie de comand\u0103 pe care ve\u021bi ajunge s\u0103 le aprecia\u021bi.<\/p>\n<p><strong>Editarea comenzilor<\/strong><\/p>\n<p>C\u00e2nd efectua\u021bi modific\u0103ri la o comand\u0103 pe care urmeaz\u0103 s\u0103 o executa\u021bi pe linia de comand\u0103, pute\u021bi s\u0103 deplasa\u021bi cursorul la \u00eenceputul sau la sf\u00e2r\u0219itul liniei de comand\u0103 pentru a facilita modific\u0103rile folosind \u02c6a (contror plus &#8222;a&#8221;) \u0219i ^e (control plus &#8222;e&#8221;).<\/p>\n<p>Pute\u021bi, de asemenea, s\u0103 repara\u021bi \u0219i s\u0103 rula\u021bi din nou o comand\u0103 introdus\u0103 anterior prin \u00eenlocuirea u\u0219oar\u0103 a textului, introduc\u00e2nd \u00eenainte \u0219i dup\u0103 \u0219irurile \u00eentre caractere ^ &#8211; ca \u00een exemplul de mai jos.<\/p>\n<p><code>$ eho hello world &lt;== oops!<\/code><\/p>\n<p>Command &#8216;eho&#8217; not found, did you mean:<\/p>\n<p>command &#8216;echo&#8217; from deb coreutils<br>command &#8216;who&#8217; from deb coreutils<\/p>\n<p>Try: <code>sudo apt install<\/code><\/p>\n<p><br><code>$ ^e^ec^ &lt;== replace text<br>echo hello world<br>hello world<\/code><\/p>\n<p><strong>Conectarea remote la un sistem folosind doar numele acestuia<\/strong><\/p>\n<p>Dac\u0103 v\u0103 conecta\u021bi la alte sisteme folosind linia de comand\u0103, pute\u021bi lua \u00een considerare ad\u0103ugarea unor pseudonime \u00een sistemul dvs. pentru a furniza detaliile. Aliasul dvs. poate s\u0103 furnizeze numele de utilizator pe care dori\u021bi s\u0103 \u00eel utiliza\u021bi (care poate sau nu s\u0103 fie acela\u0219i cu numele dvs. de utilizator de pe sistemul dvs. local) \u0219i identitatea serverului remote. Utiliza\u021bi un nume alias server_name = &#8216;ssh -v -l nume utilizator adresa-IP&#8217;, astfel:<\/p>\n<p><code>$ alias butterfly=\u201dssh -v -l username 192.168.0.11\u201d<\/code><\/p>\n<p>Pute\u021bi utiliza numele sistemului \u00een locul adresei IP dac\u0103 este listat \u00een fi\u0219ierul \/ etc \/ hosts sau este disponibil prin serverul dvs. DNS.<\/p>\n<p>\u0218i aminti\u021bi-v\u0103 c\u0103 pute\u021bi lista aliasurile dvs. cu comanda alias.<\/p>\n<p><code>$ alias<br>alias butterfly='ssh -v -l username 192.168.0.11'<br>alias c='clear'<br>alias egrep='egrep --color=auto'<br>alias fgrep='fgrep --color=auto'<br>alias grep='grep --color=auto'<br>alias l='ls -CF'<br>alias la='ls -A'<br>alias list_repos='grep ^[^#] \/etc\/apt\/sources.list \/etc\/apt\/sources.list.d\/*'<br>alias ll='ls -alF'<br>alias ls='ls --color=auto'<br>alias show_dimensions='xdpyinfo | grep '\\''dimensions:'\\'''<\/code><\/p>\n<p>Este o practic\u0103 bun\u0103 s\u0103 testa\u021bi alias-urile noi \u0219i apoi s\u0103 le ad\u0103uga\u021bi \u00een fi\u0219ierul ~ \/ .bashrc sau similar pentru a v\u0103 asigura c\u0103 acestea vor fi disponibile oric\u00e2nd dori\u021bi s\u0103 v\u0103 conecta\u021bi.<\/p>\n<p><strong>\u00cenghe\u021barea \u0219i dezghe\u021barea ferestrei de terminal<\/strong><\/p>\n<p>Secven\u021ba ^s (control plus &#8222;s&#8221;) va opri un terminal de la furnizarea output-ului prin rularea XOFF (transmite off). Acest lucru afecteaz\u0103 sesiunile PuTTY, precum \u0219i ferestrele din terminalele de pe desktop. \u00cen cazul \u00een care este tastat din gre\u0219eal\u0103, exist\u0103 modul de a face din nou fereastra terminalului s\u0103 reac\u021bioneze este s\u0103 introduce\u021bi ^q (tasta control plus &#8222;q&#8221;). Singurul truc de aici este amintirea lui ^q, deoarece nu este foarte probabil s\u0103 va afla\u021bi \u00een aceast\u0103 situa\u021bie foarte des.<\/p>\n<p><strong>Repetarea comenzilor<\/strong><\/p>\n<p>Linux ofer\u0103 multe modalit\u0103\u021bi de reutilizare a comenzilor. Cheia pentru reutilizarea comenzii este buffer-ul de istoric \u0219i comenzile pe care le colecteaz\u0103 pentru dvs. Cea mai u\u0219oar\u0103 modalitate de a repeta o comand\u0103 este de a tasta un ! urmat de literele de \u00eenceput ale unei comenzi recent utilizate. Alt\u0103 modalitate este s\u0103 ap\u0103sa\u021bi s\u0103geata \u00een sus de pe tastatur\u0103 p\u00e2n\u0103 c\u00e2nd ajunge\u021bi la comanda pe care dori\u021bi s\u0103 o reutiliza\u021bi \u0219i apoi ap\u0103sa\u021bi tasta Enter. De asemenea, pute\u021bi afi\u0219a comenzile introduse anterior tast\u00e2nd comanda &#8222;history&#8221; \u0219i apoi tasta\u021bi ! urmat de num\u0103rul afi\u0219at l\u00e2ng\u0103 comanda pe care dori\u021bi s\u0103 o refolosi\u021bi.<\/p>\n<p><code>!! &lt;== repeat previous command<br>!ec &lt;== repeat last command that started with \"ec\"<br>!76 &lt;== repeat command #76 from command history<\/code><\/p>\n<p><strong>Vizualizarea unui fi\u0219ier jurnal pentru actualiz\u0103ri<\/strong><\/p>\n<p>Comenzi precum tail -f\/var\/log\/syslog v\u0103 vor ar\u0103ta liniile ce sunt ad\u0103ugate \u00een timp real la fi\u0219ierul log specificat &#8211; foarte util dac\u0103 a\u0219tepta\u021bi o anumit\u0103 activitate sau dori\u021bi s\u0103 urm\u0103ri\u021bi ce se \u00eent\u00e2mpl\u0103 chiar \u00een acel moment. Comanda va ar\u0103ta sf\u00e2r\u0219itul fi\u0219ierului \u0219i apoi liniile suplimentare pe m\u0103sur\u0103 ce acestea sunt ad\u0103ugate.<\/p>\n<p><code>$ tail -f \/var\/log\/auth.log<br>Sep 17 09:41:01 fly CRON[8071]: pam_unix(cron:session): session closed for user smmsp<br>Sep 17 09:45:01 fly CRON[8115]: pam_unix(cron:session): session opened for user root<br>Sep 17 09:45:01 fly CRON[8115]: pam_unix(cron:session): session closed for user root<br>Sep 17 09:47:00 fly sshd[8124]: Accepted password for shs from 192.168.0.22 port 47792<br>Sep 17 09:47:00 fly sshd[8124]: pam_unix(sshd:session): session opened for user shs by<br>Sep 17 09:47:00 fly systemd-logind[776]: New session 215 of user shs.<br>Sep 17 09:55:01 fly CRON[8208]: pam_unix(cron:session): session opened for user root<br>Sep 17 09:55:01 fly CRON[8208]: pam_unix(cron:session): session closed for user root<br>&lt;== waits for additional lines to be added<\/code><\/p>\n<p><strong>Solicitarea de ajutor<\/strong><\/p>\n<p>Pentru majoritatea comenzilor Linux, pute\u021bi introduce numele comenzii urmat de op\u021biunea &#8211;help pentru a ob\u021bine informa\u021bii destul de succinte despre ceea ce face comanda \u0219i cum s\u0103 o utiliza\u021bi. Mai pu\u021bin extensiv dec\u00e2t comanda man, op\u021biunea &#8211;help v\u0103 spune adesea ce trebuie s\u0103 \u0219ti\u021bi f\u0103r\u0103 a extinde toate op\u021biunile disponibile.<\/p>\n<p><code>$ mkdir --help<br>Usage: mkdir [OPTION]... DIRECTORY...<br>Create the DIRECTORY(ies), if they do not already exist.<\/code><\/p>\n<p><code>Mandatory arguments to long options are mandatory for short options too.<br>-m, --mode=MODE set file mode (as in chmod), not a=rwx - umask<br>-p, --parents no error if existing, make parent directories as needed<br>-v, --verbose prin\u021b a message for each created directory<br>-Z set SELinux security context of each created directory<br>to the default type<br>--context[=CTX] like -Z, or if CTX is specified then set the SELinux<br>or SMACK security context to CTX<br>--help display this help and exit<br>--version output version information and exit<\/code><\/p>\n<p><code>GNU coreutils online help: <br>Full documentation at: <br>or available locally via: info '(coreutils) mkdir invocation'<\/code><\/p>\n<p><strong>\u0218terge\u021bi cu aten\u021bie fi\u0219ierele<\/strong><\/p>\n<p>Pentru a ad\u0103uga pu\u021b\u00een\u0103 precau\u021bie utiliz\u0103rii comenzii rm, pute\u021bi s\u0103 o configura\u021bi cu un alias care v\u0103 va cere s\u0103 confirma\u021bi cererea dvs. de \u0219tergere a fi\u0219ierelor \u00eenainte de a le \u0219terge. Unii administratori de sistem fac acest lucru implicit. \u00cen caz contrar, a\u021bi putea s\u0103 folosi\u021bi urm\u0103toarea op\u021biune.<\/p>\n<p><code>$ rm -i &lt;== cerere de confirmare<\/code><\/p>\n<p><strong>Dezactiveaz\u0103 aliasurile<\/strong><\/p>\n<p>Pute\u021bi dezactiva \u00eentotdeauna interactiv un alias utiliz\u00e2nd comanda unalias. Aceasta nu modific\u0103 sub nici o form\u0103 configura\u021bia aliasului \u00een cauz\u0103; \u00eel dezactiveaz\u0103 doar p\u00e2n\u0103 c\u00e2nd data viitoare c\u00e2nd v\u0103 conecta\u021bi.<\/p>\n<p><code>$ unalias rm<\/code><\/p>\n<p>Dac\u0103 aliasul rm -i este setat ca implicit \u0219i prefera\u021bi s\u0103 nu trebuiasc\u0103 s\u0103 furniza\u021bi confirmare \u00eenainte de a \u0219terge fi\u0219ierele, pute\u021bi pune comanda unalias \u00eentr-unul din fi\u0219ierele de pornire (de exemplu, ~\/.bashrc).<\/p>\n<p><strong>Aminti\u021bi-v\u0103 s\u0103 utiliza\u021bi sudo<\/strong><\/p>\n<p>Dac\u0103 uita\u021bi adesea s\u0103 precede\u021bi comenzi pe care doar root-ul le poate rula cu &#8222;sudo&#8221;, exist\u0103 dou\u0103 lucruri pe care le pute\u021bi face. Pute\u021bi folosi istoricul comenzilor folosind &#8222;sudo !!&#8221; (folosi\u021bi sudo pentru a rula cea mai recent\u0103 comand\u0103 cu sudo) sau pute\u021bi transforma unele dintre aceste comenzi \u00een aliasuri cu ata\u0219amentul &#8222;sudo&#8221; necesar.<\/p>\n<p><code>$ alias update=\u2019sudo apt update\u2019<\/code><\/p>\n<p><strong>\u00cencheiere<\/strong><\/p>\n<p>Lucrul cu linia de comanda Linux r\u0103m\u00e2ne una dintre cele mai productive \u0219i pl\u0103cute modalit\u0103\u021bi de a ob\u021bine rezultate pe sistemele Linux, iar un grup de trucuri pentru linia de comand\u0103 al\u0103turi de aliasuri inteligente v\u0103 pot face acea experien\u021b\u0103 chiar mai pl\u0103cut\u0103.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Exist\u0103 anumite trucuri pentru linia de comand\u0103 Linux care nu doar v\u0103 vor ajuta s\u0103 economisi\u021bi timp ci \u0219i s\u0103 evita\u021bi anumite probleme. De asemenea, v\u0103 vor ajuta s\u0103 v\u0103 aminti\u021bi \u0219i s\u0103 reutiliza\u021bi anumite comenzi complexe. \u00cen acest fel va va fi mai u\u0219or s\u0103 v\u0103 concentra\u021bi asupra a ceea ce trebuie s\u0103 face\u021bi,<\/p>\n","protected":false},"author":1,"featured_media":1160,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-619","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Trucuri Linux ce v\u0103 pot scuti de probleme - NAV.RO Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.nav.ro\/blog\/trucuri-linux-ce-va-pot-scuti-de-probleme\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Trucuri Linux ce v\u0103 pot scuti de probleme - NAV.RO Blog\" \/>\n<meta property=\"og:description\" content=\"Exist\u0103 anumite trucuri pentru linia de comand\u0103 Linux care nu doar v\u0103 vor ajuta s\u0103 economisi\u021bi timp ci \u0219i s\u0103 evita\u021bi anumite probleme. De asemenea, v\u0103 vor ajuta s\u0103 v\u0103 aminti\u021bi \u0219i s\u0103 reutiliza\u021bi anumite comenzi complexe. \u00cen acest fel va va fi mai u\u0219or s\u0103 v\u0103 concentra\u021bi asupra a ceea ce trebuie s\u0103 face\u021bi,\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.nav.ro\/blog\/trucuri-linux-ce-va-pot-scuti-de-probleme\/\" \/>\n<meta property=\"og:site_name\" content=\"NAV.RO Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/nav6718\" \/>\n<meta property=\"article:published_time\" content=\"2018-10-26T20:04:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-03-21T08:49:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.nav.ro\/blog\/wp-content\/uploads\/2018\/12\/trucuri_linux.png\" \/>\n\t<meta property=\"og:image:width\" content=\"362\" \/>\n\t<meta property=\"og:image:height\" content=\"139\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"NAV.RO\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@nav6718\" \/>\n<meta name=\"twitter:site\" content=\"@nav6718\" \/>\n<meta name=\"twitter:label1\" content=\"Scris de\" \/>\n\t<meta name=\"twitter:data1\" content=\"NAV.RO\" \/>\n\t<meta name=\"twitter:label2\" content=\"Timp estimat pentru citire\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.nav.ro\/blog\/trucuri-linux-ce-va-pot-scuti-de-probleme\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.nav.ro\/blog\/trucuri-linux-ce-va-pot-scuti-de-probleme\/\"},\"author\":{\"name\":\"NAV.RO\",\"@id\":\"https:\/\/www.nav.ro\/blog\/#\/schema\/person\/c0271febcae717bbdbc3b2c6dbdec20e\"},\"headline\":\"Trucuri Linux ce v\u0103 pot scuti de probleme\",\"datePublished\":\"2018-10-26T20:04:25+00:00\",\"dateModified\":\"2019-03-21T08:49:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.nav.ro\/blog\/trucuri-linux-ce-va-pot-scuti-de-probleme\/\"},\"wordCount\":991,\"publisher\":{\"@id\":\"https:\/\/www.nav.ro\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.nav.ro\/blog\/trucuri-linux-ce-va-pot-scuti-de-probleme\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.nav.ro\/blog\/wp-content\/uploads\/2018\/12\/trucuri_linux.png\",\"articleSection\":[\"HOW TO\"],\"inLanguage\":\"ro-RO\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.nav.ro\/blog\/trucuri-linux-ce-va-pot-scuti-de-probleme\/\",\"url\":\"https:\/\/www.nav.ro\/blog\/trucuri-linux-ce-va-pot-scuti-de-probleme\/\",\"name\":\"Trucuri Linux ce v\u0103 pot scuti de probleme - 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