Yandex Big Data Essentials Week1 Unix Command Line Interface File Content exploration
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cat
- displays the contents of a file at the command line
- copies or apppend text file into a document
cat [OPTIONS] .. [FILE]
head
- prints the first part of the files
head [ OPTION] … [FILE]
tail
- prints the last part of files
tail [OPTION] … [FILE] …
more
- displays text , one screen at a time
按空格翻页,按回车往下滚动行,按q退出
less
displays text, allows scrolling
按j下,按k上,按q退出
wc
“word count” prints a count of lines, words , and bytes for each file
wc [OPTION] … [FILE] …
grep
“global regular expression print ” processes text and prints any lines which match a specified pattern
grep [OPTIONS ] pattern [FILE]
cut
drops sections of each line of a file / files
cut OPTION … [FILE] …
tr
translates one set of characters to another
tr [-Ccsu] string1 string2
sort
sorts the contents of a text file
sort [OPTION] … [FILE] …
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