Linux accumulate commands for the cat and WC

Cat has three main functions: 1. Display the entire file at once. $ cat filename 2. Create a file from the keyboard. $ cat > FileName can only create new files and cannot edit existing files. 3. Merge several files into one file. $cat file1 file2 > file

Function Description: Calculates the number of words. Syntax: WC [-clw][--help][--version][file ...] Supplemental instructions: We can calculate the number of bytes, words, or columns of a file by using the WC instruction, if you do not specify a file name, or the given file name is "-", The WC instruction reads the data from the standard input device. Parameter:-C or--bytes or--chars shows only the number of bytes. -L or--lines displays only the number of columns. -W or--words displays only the number of words.

Combo command

Statistics log contains ice.connectionrefusedexception how many rows of statistical IP traffic can also be used

cat/data/resin/log/xnshare.stdout.log.20101018 |grep "Ice.connectionrefusedexception" |wc-l

Linux accumulate commands for the cat and WC