Pehea ʻoe e ʻike ai i kahi laina ma Unix?
Pehea e helu ai i nā laina ma kahi faila ma UNIX/Linux
- ʻO ke kauoha "wc -l" i ka wā e holo ai ma kēia faila, hoʻopuka i ka helu laina me ka inoa file. $ wc -l faila01.txt 5 waihona01.txt.
- No ka haʻalele i ka inoa faila mai ka hopena, e hoʻohana: $ wc -l <file01.txt 5.
- Hiki iā ʻoe ke hāʻawi i ka hoʻopuka kauoha i ke kauoha wc me ka hoʻohana ʻana i ka paipu. O kahi laʻana:
Pehea ʻoe e paʻi ai i kahi laina kikoʻī ma Unix me ka hoʻohana ʻana iā SED?
Ma kēia ʻatikala o ka moʻo sed, e ʻike mākou pehea e paʻi ai i kahi laina me ka hoʻohana ʻana i ke kauoha paʻi (p) o sed. Pēlā nō, e paʻi i kahi laina kūikawā, e kau i ka helu laina ma mua o 'p'. $ hōʻike i ka laina hope.
Pehea ʻoe e helu ai i nā laina kūʻokoʻa ma Unix?
Pehea e hōʻike ai i ka helu o ka nui o nā manawa i loaʻa ai kahi laina. E hoʻopuka i ka helu o nā hanana o kahi hoʻohana laina ke koho -c i hui pū me ka uniq . Hoʻomaka kēia i kahi waiwai helu i ka puka o kēlā me kēia laina.
Pehea wau e ʻike ai i nā faila 10 kiʻekiʻe ma Linux?
Kauoha e ʻimi i nā waihona nui loa 10 nui ma Linux
- no ka koho-ke koho: hōʻike i nā nui o nā pūnaewele i loko o ka hōʻailona hiki ke loliʻia, i nā Kilobytes, Megabytes a me nā Gigabytes.
- o ke koho: -e hōʻike i ka helu no kēlā me kēia pane.
- du kauoha -x koho : Holo i nā papa kuhikuhi. …
- e hoʻohālike i ka koho -r koho: Huli i ka hopena o nā hōʻike.
He aha ke kauoha e hōʻike i nā laina 10 mua o ka faila ma Linux?
Ke kauoha poo, e like me ka manaʻo o ka inoa, e paʻi i ka helu N luna o ka ʻikepili i hāʻawi ʻia. Ma ka maʻamau, paʻi ia i nā laina 10 mua o nā faila i kuhikuhi ʻia. Inā ʻoi aku ma mua o hoʻokahi inoa faile i hāʻawi ʻia a laila ʻike ʻia ka ʻikepili mai kēlā me kēia faila e kona inoa faila.
He aha ka hoʻohana ʻana o awk ma Linux?
ʻO Awk kahi mea pono e hiki ai i ka mea papahana ke kākau i nā polokalamu liʻiliʻi akā maikaʻi ma ke ʻano o nā ʻōlelo e wehewehe i nā ʻano kikokikona e ʻimi ʻia i kēlā me kēia laina o kahi palapala a me ka hana e hana ʻia ke loaʻa kahi pāʻani i loko o kahi. laina. Hoʻohana nui ʻia ʻo Awk no ka nānā ʻana a me ka hana ʻana.
Pehea ʻoe e paʻi ai i kahi laina ma Unix?
Kākau i kahi palapala bash e paʻi i kahi laina mai kahi faila
- awk : $>awk '{if(NR==LINE_NUMBER) pa'i $0}' file.txt.
- sed : $>sed -n LINE_NUMBERp faila.txt.
- poo : $>poo -n LINE_NUMBER waihona.txt | huelo -n + LINE_NUMBER Eia ʻo LINE_NUMBER, ka helu laina āu e makemake ai e paʻi. Nā Laʻana: Paʻi i kahi laina mai hoʻokahi faila.
Pehea wau e kiʻi ai i kahi helu laina kikoʻī ma Unix?
ʻO ke koho -n ( a i ʻole –laina-helu). haʻi iā grep e hōʻike i ka helu laina o nā laina i loaʻa kahi kaula e pili ana i kahi kumu. Ke hoʻohana ʻia kēia koho, paʻi ʻo grep i nā pāʻani i ka hoʻopuka maʻamau prefixed me ka helu laina. Hōʻike ka hopena ma lalo nei e loaʻa nā pāʻani ma nā laina 10423 a me 10424.
ʻO wai ke kauoha e paʻi i nā laina āpau i ka faila?
kauoha grep ma Unix/Linux. Huli ka kānana grep i kahi faila no ke ʻano o nā huaʻōlelo, a hōʻike i nā laina āpau i loaʻa i kēlā ʻano. ʻO ke kumu i ʻimi ʻia i loko o ka faila i kapa ʻia ʻo ka ʻōlelo maʻamau (kū ʻo grep no ka huli honua no ka ʻōlelo maʻamau a paʻi ʻia).
Pehea wau e hōʻike ai i ka laina 10 o kahi faila?
Ma lalo iho nei ʻekolu mau ala maikaʻi e loaʻa ai ka laina nth o kahi faila ma Linux.
- poo / huelo. ʻO ka hoʻohana wale ʻana i ka hui ʻana o nā kauoha poʻo a me ka huelo ʻo ia paha ke ala maʻalahi. …
- sed. Aia kekahi mau ala maikaʻi e hana ai i kēia me ka sed. …
- awk. Loaʻa i ka awk kahi NR hoʻololi i hoʻopaʻa ʻia e mālama i nā helu lālani file/stream.
Pehea wau e heluhelu ai i kahi faila ma Unix?
E hoʻohana i ka laina kauoha e hoʻokele i ka Desktop, a laila type cat myFile. txt . E paʻi kēia i nā mea o ka faila i kāu laina kauoha. ʻO kēia ka manaʻo like me ka hoʻohana ʻana i ka GUI e kaomi pālua i ka faila kikokikona e ʻike i kāna mau mea.
Pehea mākou e hele ai i ka hoʻomaka o kahi laina?
No ka hoʻokele ʻana i ka hoʻomaka o ka laina i hoʻohana ʻia: “CTRL+a”. No ka hoʻokele ʻana i ka hope o ka laina i hoʻohana ʻia: “CTRL+e”.