Hanyar Jagoran Amfani da Sed Umurni a cikin Linux

Gabatarwar zuwa umurnin Linux sed

Kayan aiki na Linux yana amfani da umarnin ƙira don aiki tare da tsarin fayil ɗin kwamfuta. Amfani da umurnin Linux na asali , wanda yake takaice don editaccen ruwa, shine canza kowane layin fayil ko rafi ta hanyar maye gurbin sassa na layin. Yana sanya matakan rubutu na asali zuwa fayil ko shigarwa daga wani bututun mai. Alal misali, ce kana da fayil mai suna "songs.text" wanda ya ƙunshi waɗannan layi:

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

Samar da Matakan Rubutu Tare da Sed

Idan kana so ka canza duk farashin farashi na $ 6.30 zuwa $ 7.30, zaka iya yin canje-canje ta yin amfani da umarnin sed a wannan hanya:

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

Wannan lambar ta sa canji kuma ya rubuta fayil ɗin da aka gyara zuwa "songs2.txt". Fayil din fayil ɗin ya ƙunshi:

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

Idan kana so ka maye gurbin duk abubuwan da suka faru na "Cash" tare da "Shara" ka yi amfani da:

sed 's / Cash / Trash /' songs.txt> songs2.txt

wanda ya haifar da fayil tare da abun ciki:

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

Tacewa tare da umurnin Sed

Ana amfani da Sed sau da yawa don tace Lines a cikin fayil ko rafi. Alal misali, idan kuna son ganin layin da ke dauke da "John," kuna amfani da:

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

wanda ya rubuta Lissafi masu zuwa don aika johns.txt:

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