shell-grep-sed Common usage

grep
-a digital search to show the next line of information
650) this.width=650; "height=" 290 "src=" http://b176.photo.store.qq.com/psb?/81c1194a-ff39-4e50-b1b1-40057b06260f/ 4vfstywhy8ig7ib7hywauwhpayzyecqfqo*js0neliw!/b/dlaaaaaaaaaa&bo=eqeiaqaaaaafegg! "width=" 377 "style=" vertical-align:top; "alt=" dlaaaaaaaaaa&bo=eqeiaqaaaaafegg! "/>
-B Displays the last line of information after a digital search
650) this.width=650; "height=" 288 "src=" http://b246.photo.store.qq.com/psb?/81c1194a-ff39-4e50-b1b1-40057b06260f/ R9dron.fhdmpi*khzpkb3tmkhzailcgor4.lr3cdze0!/b/dpyaaaaaaaaa&bo=qqegaqaaaaafelo! "width=" 425 "style=" vertical-align:top; "alt=" dpyaaaaaaaaa&bo=qqegaqaaaaafelo! "/>
-C Digital Search to display the information on the downstream
650) this.width=650; "height=" 306 "src=" http://b288.photo.store.qq.com/psb?/81c1194a-ff39-4e50-b1b1-40057b06260f/ s9d75b5h1gn6eplp*mbyflrfqgb8u1t4ulcjw4vz934!/b/dcabaaaaaaaa&bo=cweyaqaaaaafehi! "width=" 371 "style=" vertical-align:top; "alt=" dcabaaaaaaaa&bo=cweyaqaaaaafehi! "/>
The total number of rows with the-c statistic matching criteria
-I ignore Condition case
-N output shows the number of lines in the message
-V To reverse display
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Sed
SED is a non-interactive text editing command, and Vim VI is an interactive edit
Sed ' s/123/456/' file name can change 123 to 456
650) this.width=650; "height=" 367 "src=" http://b287.photo.store.qq.com/psb?/81c1194a-ff39-4e50-b1b1-40057b06260f/ A.. ocfaxisj1zninryy9ymor9cpzlipxmf675lnwvxc!/b/db8baaaaaaaa&bo=9afvaqaaaaafekg! "width=" "style=" vertical-align:top; "alt=" db8baaaaaaaa&bo=9afvaqaaaaafekg! "/>
Sed ' s/[0-9]/(&)/' filename where & means the matching value retrieved from the previous 0-9, then add parentheses
650) this.width=650; "height=" src= "http://b288.photo.store.qq.com/psb?/81c1194a-ff39-4e50-b1b1-40057b06260f/ jtmheh5tejnpgdvxfwvv80h2as.p8rju6orgzmmoqy0!/b/dcabaaaaaaaa&bo=lqfoaqaaaaafem4! "width=" 405 "style=" vertical-align:top; "alt=" dcabaaaaaaaa&bo=lqfoaqaaaaafem4! "/>
In general, SED is the first one in a row, and if you want to check the whole line, you need to add g at the end
650) this.width=650; "height=" 361 "src=" http://b288.photo.store.qq.com/psb?/81c1194a-ff39-4e50-b1b1-40057b06260f/ ubdaagowr*xhdwjhxnu4eeu3k6za3rmulclkof.g9xy!/b/dcabaaaaaaaa&bo=xqfpaqaaaaafej8! "width=" 453 "style=" vertical-align:top; "alt=" dcabaaaaaaaa&bo=xqfpaqaaaaafej8! "/>
Sed in-e can be used with multiple commands consecutively
650) this.width=650; "height=", "src=" http://b287.photo.store.qq.com/psb?/81c1194a-ff39-4e50-b1b1-40057b06260f/ Bh3iluhy8o0dg5o4wziwe*ri8vla0xhddvi6i3falss!/b/db8baaaaaaaa&bo=fgk0aaaaaaafeps! "width=" 638 "style=" vertical-align:top; "alt=" db8baaaaaaaa&bo=fgk0aaaaaaafeps! "/>
D in SED is delete x, $d currently deleted to end
650) this.width=650; "height=" 291 "src=" http://b248.photo.store.qq.com/psb?/81c1194a-ff39-4e50-b1b1-40057b06260f/ . gdnmsvh0hlfuoocr9tw97k7xkh6jef2klbt*q7ox6w!/b/dpgaaaaaaaaa&bo=lqejaqaaaaafeiu! "width=" 405 "style=" vertical-align:top; "alt=" dpgaaaaaaaaa&bo=lqejaqaaaaafeiu! "/>
In sed i is the current line insert a is the next line inserted into the current row
650) this.width=650; "height=" 388 "src=" http://b288.photo.store.qq.com/psb?/81c1194a-ff39-4e50-b1b1-40057b06260f/ vtqbvc84ludxpvtwbbgiytzop9tucwdvqff00yi2dsg!/b/dcabaaaaaaaa&bo=mwgeaqaaaaafecw! "width=" 411 "style=" vertical-align:top; "alt=" dcabaaaaaaaa&bo=mwgeaqaaaaafecw! "/>
SED p is the display output if no-n sed is retrieving all rows, and the matching rows are repeated output after the match is found, that is, the output two times!,-n is not showing the unmatched rows
650) this.width=650; "height=" "src=" http://b173.photo.store.qq.com/psb?/81c1194a-ff39-4e50-b1b1-40057b06260f/ unkijadflgyaqu6z*nbzvuycgotb*otfwbhtr8oylr0!/b/dk0aaaaaaaaa&bo=lqfzaaaaaaafep4! "width=" 405 "style=" vertical-align:top; "alt=" dk0aaaaaaaaa&bo=lqfzaaaaaaafep4! "/>
SED-F specifies that the sed script is sed ' This command can be written directly to the script '

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shell-grep-sed Common usage