Basic Linux operations-sorting, splitting, merging, archiving, etc.

Linux basic operations-file sorting, splitting, merging, archiving, and other 1sort1sort commands regard the input file as a data stream composed of multiple records, and the record is composed of fields of variable width, the basic format of the 2sort command is sort option Linux basic operation-file sorting, splitting, merging, archiving, etc. The 1 sort 1 sort command regards the input file as composed of multiple records. data flow, the record is composed of fields with variable width, basic format sort option file 3 sort command option and its meaning option meaning-c test file whether the file has been sorted by the domain specified by-k-m merge two sorted files-n sort by number size-o output files write the output to the specified file, it is equivalent to redirecting the output to the specified file-r and displaying the sorting result in reverse order-t changing the domain separator-u removing duplicate rows in the Result 2 uniq 1 uniq command is used to remove duplicate lines of text, this is similar to the basic usage of the-u option 2 uniq command of the sort command uniq option file 3 uniq command option and its meaning option meaning-c print the number of times each line appears repeatedly in the text-d only displays duplicate records, each duplicate record appears only once-u only displays records without duplicates 3 cut 1 cut command is used to extract the basic format cut option of the text 2 cut command from standard input or text files by field or line file 3 cut option and its meaning option meaning-c specifies the number of extracted characters or character range-f specifies the range of extracted fields or fields-d changes the domain delimiter 4 tar 1 tar command is linux Archive command, in layman's terms, the tar command compresses and decompress Linux system files. The basic format of the 2 tar command is tar option file name or directory name. The 3 tar command option and its meaning. the option meaning: c. create a new package- r adds a new file for the package-t lists the package content-u updates the files in the package, if this file is not included in the package, add the file to the package-x extract the file-v detailed report tar information-f use a compressed file or device, this option is usually required.-z uses gzipzip to compress and decompress the file. if it is a tar package ending with .gz, this option is required. 4. extract the tar-xvf package name from a non-gzip file and decompress the tar-zxvf package. name