Ib Daim Ntawv Ceev Ceev Siv Los Sed Lus Teb Hauv Linux

Ib qho taw qhia rau Linux kev hais kom ua

Lub Linux operating system ua kom siv cov lus txib kom ua hauj lwm nrog lub computer cov ntaub ntawv. Kev siv thawj zaug ntawm Linux cov lus txib sed , uas yog luv luv rau kwj editor, los hloov txhua kab ntawm cov ntaub ntawv los yog kwj los ntawm kev hloov tej feem ntawm kab. Nws ua rau cov ntaub ntawv sau los hloov cov ntaub ntawv los yog cov lus qhia los ntawm cov kav dej. Piv txwv, hais tias koj muaj ib daim ntawv hu ua "songs.text" uas muaj cov kab no:

1, Justin Timberlake, Title 545, Nqe $ 6.30 2, Taylor Swift, Title 723, Nqe $ 7.90 3, Mick Jagger, Title 610, Nqe $ 7.90 4, Lady Gaga, Title 118, Nqe $ 6.30 5, Johnny Nyiaj, Title 482, Nqe $ 6.50 6, Elvis Presley, Title 335, Nqe $ 6.30 7, John Lennon, Title 271, Nqe $ 7.90

Kev Sau Ntawv Hloov Nrog Sed

Yog tias koj xav hloov tag nrho cov nqi nqe ntawm $ 6.30 mus rau $ 7.30, koj tuaj yeem ua rau kev hloov siv cov lus hais kom ua raws li no:

sed 's / 6.30 / 7.30 /' songs.txt> songs2.txt

Cov cai no ua rau qhov kev hloov thiab sau cov ntaub ntawv hloov mus rau "songs2.txt". Cov ntaub ntawv tso zis muaj:

1, Justin Timberlake, Title 545, Nqe $ 7.30 2, Taylor Swift, Title 723, Nqe $ 7.90 3, Mick Jagger, Title 610, Nqe $ 7.90 4, Lady Gaga, Title 118, Nqe $ 7.30 5, Johnny Nyiaj, Title 482, Nqe $ 6.50 6, Elvis Presley, Title 335, Nqe $ 7.30 7, John Lennon, Title 271, Nqe $ 7.90

Yog tias koj xav hloov txhua nqe lus ntawm "Nyiaj" nrog "Pov Tseg" koj siv:

sed 's / Nyiaj / Pov Tseg /' songs.txt> songs2.txt

uas tsim ib cov ntaub ntawv nrog cov ntsiab lus:

1, Justin Timberlake, Title 545, Nqe $ 7: 30 2, Taylor Swift, Title 723, Nqe $ 7.90 3, Mick Jagger, Title 610, Nqe $ 7.90 4, Lady Gaga, Title 118, Nqe $ 7: 30 5, Johnny Trash, Title 482, Nqe $ 6.50 6, Elvis Presley, Title 335, Nqe $ 7: 30 7, John Lennon, Title 271, Nqe $ 7.90

Filtering nrog cov hais kom ua Sed

Sed yog ib txwm siv los lim cov kab hauv cov ntaub ntawv lossis dej. Piv txwv, yog tias koj tsuas xav pom cov kab uas muaj "John," koj siv:

sed -n '/ John / p' songs.txt> johns.txt

uas sau cov kab hauv qab no mus ua ntaub ntawv thov johns.txt:

5, Johnny Trash, Title 482, Nqe $ 6.50 7, John Lennon, Title 271, Nqe $ 7.90