[root@h107 v8dump]# sed -i 's/ALTER SCHEMA cf OWNER TO cf;/--ALTER SCHEMA cf OWNER TO cf;/g' datadmp.sql Linux 查看文件编码 查看文件编码 在Linux中查看文件编码可以通过以下几种方式: 1.在Vim中可以直接查看文件编码 :set fileencoding 即可显示文件编码格式。 文件编码转换 1.在Vim中直接进行...
This was born in 4-5 hours of recapping sed (and many hours learning it in the first place). Since then I've spent some more hours (and counting) fixing & improving. A good way to learn something well is to also explain to others. And if I'm honest this is also for myself, la...
I will explain their relation to the matching "n," "d," and "p" single-line commands. The "n" command will print out the current pattern space (unless the "-n" flag is used), empty the current pattern space, and read in the next line of input. The "N" command does not ...
Chapters 1 – 7 cover Sed: Chapters 1 – 2 explain Sed syntax and basic commands, and cover in detail the Sed substitution command. Chapters 3 – 5 explain reg-ex basics, Sed execution, and several additional Sed commands. Chapters 6 – 7 explains Sed hold and pattern space commands, mul...
The additional twosedcommands that I would like to explain here are ‘d’ and ‘p’ – the delete and print commands. The truth is that I rarely use any othersedcommand. Combined withsed‘s powerful addressing, these two and perhaps search and replace are the commands that you will use ...
Tools likesed(stream editor) andgrep(global regular expression print) are powerful ways to save time and make your work faster. Before diving deep into the use cases, I would like to briefly explain regular expressions (regexes), which are necessary for the text manipulation that we will do ...
Explain why not. d. We want to insert a comma in the appropriate place in the Sales values. For instance, 10381 should be 10,381 and 8781 should be 8,781. To do this, we need to count from the right side of each sales amount. Each sales amount has 4 or ...
Labels can be placed inside sed script files to make it easier to explain what is transpiring, once the files begin to grow in size. There are a variety of commands that relate to these labels, and they include: 1. : The colon signifies a label name. For example: ...
I'll explain them later. So let's continue. There are four parts to this substitute command: s Substitute command /../../ Delimiter one Regular Expression Pattern Search Pattern ONE Replacement string The search pattern is on the left hand side and the replacement string is on the right ...
I won’t write much about it, as I hope the comments explain the script. I will just say that I ran this on a Mac OS X system, and if you want to rename the files in place without making a backup, on OS X you need to include a blank string after the -i option, as shown:...