Wannan jagorar ya nuna maka yadda za a samar da rubutu ga maɓalli mai amfani ta amfani da umarnin saƙo na Linux .
An yi amfani dashi a cikin maƙasudin umarnin amsawa ba ta da amfani amma a lokacin da aka yi amfani da ita azaman ɓangaren rubutun za'a iya amfani dashi don nuna umarnin, kurakurai, da sanarwar.
Misali Amfani da Dokokin Kira na Linux
A cikin mafi sauki hanyar hanya mafi sauƙi zuwa fitarwa zuwa ga m alamar kamar haka:
kira "sallo duniya"
Dokar da ke sama ta fitar da kalmomin " sannu-sannu duniya " zuwa allon (ƙananan alamomi).
Ta hanyar tsoho, bayanin sanarwa yana haifar da sabon layin haruffa a ƙarshen kirtani.
Don gwada wannan gwada bayanan da ke cikin taga mai haske:
Kira "sannu duniya" && echo "yayinda duniya"
Za ku ga cewa sakamakon yana kamar haka:
Sannu Duniya
kyawawan duniya
Zaka iya ƙetare sabon layin halayen ta ƙara min n nisa (-n) kamar haka:
echo -n "sannu duniya" && echo -n "amarya duniya"
Sakamakon umurnin da aka sama shi ne kamar haka:
sannu duniya mai ban mamaki
Wani abu kuma don tunani game da lokacin amfani da bayanin sanarwa shine yadda yake amfani da haruffa na musamman.
Alal misali gwada abin da ke cikin taga mai haske:
Kira "sannu duniya \ r \ rododbye duniya"
A cikin kyakkyawar manufa da \ r da \ n za su yi aiki a matsayin haruffa na musamman don ƙara sabon layi amma ba sa. Sakamakon haka kamar haka:
duniya mai farin ciki duniya
Zaka iya taimakawa ta musamman ta amfani da umarnin murya tareda ciki har da -e sauya kamar haka:
Kira -n "sannu duniya \ r \ rododbye duniya"
Wannan lokaci sakamakon zai kasance kamar haka:
Sannu Duniya
kyawawan duniya
Kuna iya zama a halin da ake ciki inda kake ƙoƙarin fitar da kirtani wanda za a bi da shi azaman hali na musamman kuma baka son shi. A cikin wannan labari ya yi amfani da babban birni kamar haka:
sauti -I "sannu a duniya duniyar duniya"
Wadanne haruffa na musamman an yi amfani da su ta hanyar amfani da -yu canzawa?
- \\ bashin
- \ a jijjiga
- \ b bayawa
- \ c ba samar da wani karin kayan aiki ba
- \ e tserewa
- \ f siffar abinci
- \ n sabon layi
- \ r karwan tafiye-tafiye
- \ t a tsaye shafin
- \ v shafi na tsaye
- \ 0NNN octal darajar da 1 zuwa 3 digiri
- \ xHH byte tare da darajar hexadecimal
Bari mu gwada wasu daga cikin wadannan. Gudura wannan umurnin a cikin wani m:
yayayayayayayayayayayayayayayayaya
Dokar da ke sama zai samar da waɗannan abubuwa:
Helo duniya
Ba shakka ba gaske abin da kake son fitowa a allon ba amma zaka sami ma'ana cewa bambaya b cire maƙasin da ya gabata.
Yanzu gwada wannan a cikin taga mai haske:
sauti -e "hello \ c duniya"
Wannan umarni yana fitar da duk abin da har har sai bayanan baya da c. An cire dukkan abubuwa da suka hada da sabon layi.
To, mene ne bambanci tsakanin sabon hali na layi da karusar karusai? Sabuwar hali na hali yana motsa siginan kwamfuta zuwa layin na gaba yayin da yada karusar ya motsa siginan kwamfuta zuwa gefen hagu.
A matsayin misali shigar da wadannan zuwa cikin madogararka:
Kira -e "sannu \ nworld"
Sakamako na umurnin da ke sama ya sanya kalmomin biyu a kan layi daban-daban:
sannu
duniya
Yanzu gwada wannan a cikin taga mai haske:
Kira -e "sannu \ rworld"
Bambanci tsakanin sabon layi da karusar karusai zai zama da gaske kamar yadda za a nuna wannan a matsayin fitarwa:
duniya
Kalmar sallo da aka nuna, karusar karusar ya dauki mabudin zuwa farkon layin kuma an nuna kalmar duniya.
Ya zama dan karin bayani idan kun gwada haka:
echo -e "hello \ rhi"
Da fitarwa daga sama kamar haka:
hillo
A gaskiya ta amfani da mutane da yawa har yanzu suna yin amfani da rukunin \ r \ n lokacin da aka fitar zuwa sabon layi. Sau da yawa sau da yawa, duk da haka, zaku iya tserewa da kawai \ n.