grep命令详解（Grep command detailed）.docVIP

grep命令详解（Grep command detailed） 0 28 Gateway 54 In general SEP and between 4 to two spaces This can also be: Awk/^Sep 4/messages # If you can not determine the number of space you can. # awk$2~/4/messages Awk$2~/4/messages Grep is the use of regular expressions for exact matching: Parameter: -v reverse mode, display does not contain a regular line -r recursive model contains subdirectories -q silent mode -i ignorecase, only for a single character. -w whole word alignment, namely punctuation for word delimiter At the same time, the output line number -n -c output only in accordance with the rules of the row count -l output only in accordance with the rules of the file name String -o with RE output -s does not exist or no, display the error message text is equivalent to 2/dev/null -h query file does not display the file name \ precise matching line -E extension mode Additional information: [[: u p p e r]] [A Z] - equivalent to [[: a l N U M]] is equivalent to [0 - 9 A - zA-Z] [[: l o w e r]] [a Z] - equivalent to [[: s p a c e]]: equivalent to t a or B key space [[: D I g i t]] is equivalent to [0 - 9] [[: a l p h a] [a]: equivalent to Z - A - Z] Grep -n test.txt ^ $ output display line numbers. Grep360565687qq.txt 360565687for the exact match Grep -n 360565687 qq.txt display line numbers and matching content Grep -c 360565687 qq.txt display can be matched to the number of rows Grep SEP in general and between 4 to two spaces This can also be: Awk/^Sep 4/messages # If you can not determine the number of space you can. # awk$2~/4/messagesqq.txt, with a tab key after 360565687 Grep [345]60 qq.txt, contains 360460560 rows Grep 50[Ss] qq.txt, including 50S or 50s line Grep -o 50[Ss] qq.txt shows only a partial match, which only shows 50S 50s. Grep [a-d]60 qq.txt, A60 B60 C60 D60 line contains Grep3[3,6]qq.txt, only 33 or 36 Grep ^[^34] qq.txt, with 3 or 4 at the beginning of the line Grep -v ^[^34] qq.txt, with 3 or 4 at the beginning of the line