Pehea wau e ʻike ai i nā laina 100 mua ma Linux?
Kākau i kēia kauoha poʻo e hōʻike i nā laina 10 mua o kahi faila i kapa ʻia ʻo "bar.txt":
- poʻo -10 bar.txt.
- poʻo -20 bar.txt.
- sed -n 1,10p /etc/group.
- sed -n 1,20p /etc/group.
- awk 'FNR <= 10' /etc/passwd.
- awk 'FNR <= 20' /etc/passwd.
- perl -ne'1..10 a paʻi ' /etc/passwd.
- perl -ne'1..20 a paʻi ' /etc/passwd.
Dek 18. 2018 g.
Pehea wau e hōʻike ai i nā laina 10 mua o kahi faila ma Linux?
No ka nānā ʻana i nā laina mua o kahi faila, e ʻano i ka inoa file head, kahi inoa file ka inoa o ka faila āu e makemake ai e nānā, a laila kaomi . Ma ka maʻamau, hōʻike ke poʻo iā ʻoe i nā laina 10 mua o kahi faila. Hiki iā ʻoe ke hoʻololi i kēia ma ke kaomi ʻana i ke poʻo -number filename, kahi helu ka helu o nā laina āu e makemake ai e ʻike.
Pehea wau e ʻohi ai i ka laina mua o kahi faila ma Linux?
poʻo -n10 filename | grep ... e hoʻopuka ke poʻo i nā laina 10 mua (e hoʻohana ana i ke koho -n), a laila hiki iā ʻoe ke paipu i kēlā puka i grep . Hiki iā ʻoe ke hoʻohana i kēia laina: head -n 10 /path/to/file | grep […]
Pehea ʻoe e ʻike ai i kahi laina ma kahi faila ma Linux?
ʻO Grep kahi mea hana laina kauoha Linux / Unix i hoʻohana ʻia no ka ʻimi ʻana i kahi kaula o nā huaʻōlelo i kahi faila i kuhikuhi ʻia. Kapa ʻia ke ʻano huli kikokikona he ʻōlelo maʻamau. Ke loaʻa iā ia kahi pāʻani, paʻi ʻo ia i ka laina me ka hopena. He mea maʻalahi ke kauoha grep i ka wā e ʻimi ai i nā faila log nui.
Pehea wau e hōʻike ai i ka helu o nā laina ma kahi faila 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 wau e kope ai i nā laina 10 hope loa ma Linux?
1. helu ʻana i ka helu o nā laina i loko o ka waihona, me ka hoʻohana ʻana i ka `cat f. txt | wc -lʻ a laila e hoʻohana i ke poʻo a me ka huelo i loko o kahi paipu e paʻi i nā laina hope 81424 o ka faila (laina #totallines-81424-1 a i #totallines).
Which command is use to display first 10 lines of the beginning of the file?
ʻO ke kauoha poʻo, e like me ka manaʻo o ka inoa, e paʻi i ka helu N o luna o ka ʻikepili o ka mea 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 ma mua o kona inoa faila.
Pehea wau e ʻike ai i nā laina hope 10 o kahi faila ma Unix?
Syntax kauoha huelo Linux
He kauoha ka huelo e paʻi ana i ka helu hope loa o nā laina (10 laina ma ka paʻamau) o kekahi faila, a laila hoʻopau. Laʻana 1: E paʻi ʻo "huelo" i nā laina hope he 10 o kahi faila, a laila puka. e like me kāu e ʻike ai, paʻi kēia i nā laina hope 10 o /var/log/messages.
ʻO wai ke kauoha i hoʻohana ʻia e ʻike i nā faila?
O ia wale nō! ʻO ke kauoha file he mea pono Linux e hoʻoholo i ke ʻano o kahi faila me ka ʻole o ka hoʻonui.
Pehea e hiki ai iaʻu ke kiʻi i nā laina 10 e hiki mai ana?
You can use the -B and -A to print lines before and after the match. Will print the 10 lines before the match, including the matching line itself. And if you need to print 10 lines of leading and trailing output context. -A num –after-context=num Print num lines of trailing context after matching lines.
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 kiʻi ai i kekahi mau laina?
No ka BSD a i ʻole GNU grep hiki iā ʻoe ke hoʻohana -B num e hoʻonohonoho i ka nui o nā laina ma mua o ka pāʻani a me -A helu no ka helu o nā laina ma hope o ka pāʻani. Inā makemake ʻoe i ka helu like o nā laina ma mua a ma hope hiki iā ʻoe ke hoʻohana -C num . E hōʻike ana kēia i nā laina 3 ma mua a me nā laina 3 ma hope.
How do I grep a line in a file?
Huli ke kauoha grep i ka faila, e ʻimi ana i nā hoʻohālikelike i ke kumu i kuhikuhi ʻia. No ka hoʻohana ʻana iā ia e ʻano grep , a laila ke kumu a mākou e ʻimi nei a hope ka inoa o ka faila (a i ʻole nā faila) a mākou e ʻimi nei.
Pehea wau e ʻike ai i kahi waihona ma Linux?
Pono ʻoe e hoʻohana i ke kauoha ʻimi. Hoʻohana ʻia ia e ʻimi i nā faila ma Linux a i ʻole Unix-like system. E ʻimi ke kauoha ʻimi ma kahi waihona i kūkulu mua ʻia o nā faila i hana ʻia e updatedb. E ʻimi ke kauoha ʻimi i ka ʻōnaehana faila ola no nā faila i kūpono i nā koina huli.
Pehea wau e ʻimi ai i nā kikokikona ma nā faila āpau ma Linux?
No ka ʻimi ʻana i nā faila i loaʻa nā kikokikona kikoʻī ma Linux, e hana i kēia.
- E wehe i kāu app terminal punahele. ʻO XFCE4 terminal kaʻu makemake pilikino.
- E hoʻokele (inā makemake ʻia) i ka waihona kahi āu e ʻimi ai i nā faila me kekahi kikokikona kikoʻī.
- Kākau i kēia kauoha: grep -iRl "kou-text-to-find" ./
4 pule. 2017 г.