Ob leeg egrep thiab fgrep yog muab los ntawm base grep hais kom ua. Lub "egrep" sawv cev rau "kev txuas ntxiv grep" thaum lub fgrep sawv cev rau "txoj hlua ruaj khov grep." 2. Ib egrep hais kom ua yog siv los tshawb nrhiav ntau tus qauv hauv cov ntaub ntawv lossis lwm yam ntaub ntawv khaws cia thaum frgrep siv los nrhiav cov hlua.
Egrep ua dab tsi hauv Unix?
egrep yog tus qauv tshawb nrhiav cov lus txib uas belongs rau tsev neeg ntawm kev ua haujlwm grep. 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 hauv Unix yog dab tsi?
Qhov sib txawv tseem ceeb ntawm grep thiab egrep yog grep yog ib qho lus txib uas tso cai rau kev tshawb nrhiav cov ntsiab lus raws li cov lus qhia tsis tu ncua thiab nthuav tawm cov kab sib txuamthaum egrep yog qhov txawv ntawm grep uas pab tshawb nrhiav cov ntsiab lus los ntawm kev siv cov kab lus txuas ntxiv los tso saib cov kab machining.
Dab tsi yog grep thiab egrep hauv Linux?
Grep stands rau "Ntiaj Teb Cov Lus Qhia Tsis Txaus Siab Sau", tau ua Egrep rau "Kev Tshaj Tawm Ntiaj Teb Kev Tshaj Tawm Tshaj Tawm". Tus qauv feem ntau raug kho raws li cov lus qhia tsis tu ncua, uas e hauv egrep stands rau "Extended Regular Expressions" abbreviated 'ERE' yog enabled hauv egrep. … Siv cov yeeb nkab peb hla cov zis ntawm ls rau grep.
Dab tsi yog fgrep hais kom ua hauv UNIX nrogpiv txwv?
Cov lus txib fgrep tso tawm cov ntaub ntawv uas muaj cov kab sib tw yog tias koj teev ntau tshaj ib cov ntaub ntawv hauv Cov Ntaub Ntawv parameter. Cov lus txib fgrep txawv ntawm grep thiab egrep cov lus txib vim nws tshawb nrhiav ib txoj hlua es tsis yog nrhiav tus qauv uas phim cov lus qhia.
