fgrep yog tib yam li grep -F. Kev thov ncaj qha raws li egrep lossis fgrep raug txiav tawm, tab sis tau muab tso cai rau cov ntawv thov keeb kwm uas tso siab rau lawv kom khiav tsis hloov. Koj siv fgrep lossis grep -F yog tias koj tsis xav kom txoj hlua grepped los txhais ua tus qauv.
fgrep lo lus txib siv rau dab tsi?
Cov lus txib fgrep tshawb nrhiav cov ntaub ntawv nkag tau teev tseg los ntawm Cov Ntaub Ntawv Parameter (tus qauv nkag los ntawm lub neej ntawd) rau cov kab uas phim tus qauv. Cov lus txib fgrep tshawb nrhiav tshwj xeeb rau cov qauv tsis sib xws uas yog cov hlua ruaj khov.
qhov txawv ntawm fgrep thiab grep yog dab tsi?
The grep lim nrhiav ib cov ntaub ntawv rau cov qauv tshwj xeeb ntawm cov cim thiab qhia txhua kab uas muaj cov qauv ntawd. Lub lim fgrep tshawb nrhiav cov kab cim ruaj khov hauv cov ntaub ntawv lossis cov ntaub ntawv.
Vim li cas egrep siv?
egrep yog tus qauv tshawb nrhiav cov lus txib uas yog tsev neeg ntawm grep ua haujlwm. Nws ua haujlwm ib yam li grep -E ua. Nws kho tus qauv raws li kev nthuav qhia tsis tu ncua thiab luam tawm cov kab uas phim tus qauv.
Qhov txawv ntawm grep thiab egrep yog dab tsi?
grep thiab egrep ua haujlwm zoo ib yam, tab sis txoj kev lawv txhais cov qauv yog qhov txawv xwb. Grep stands rau "Ntiaj teb cov lus hais tsis tu ncua", yog li Egrep rau "Nthuav thoob ntiaj teb kev nthuav qhia luam tawm". … Cov lus txib grep yuav xyuas seb puas muaj cov ntaub ntawv nrog.
