Used theegrepcommand with multiple regex patterns to reduce the output much more. I used the-vargument to perform the "opposite" meaning of a normalegrepcommand, so strings with these patterns were not shown; and also used the-iargument to perform a case insensitiveegrepsearch here. While my...
match patterns in a file Command SYNOPSISDESCRIPTIONOptionsEXAMPLESENVIRONMENT VARIABLESDIAGNOSTICSMessagesPORTABILITYLIMITSAVAILABILITYSEE ALSO SYNOPSIS grep[-abcEFGhiLlnqrsuVvwx] [-epattern] ... [-fpatternfile] ... [-U[[[c][lb8oa]][p[lb8oa]]] [-Anum] [-Bnum] [-C[num]] [-daction] ...
14. How to Find a Pattern in Multiple Files Recursively As discussed previously, we can perform pattern matching on multiple files. However, the situation becomes tricky when files are present under multiple sub-directories and we pass all of them as command arguments. In such cases, we can p...
Theegrepcommand searches an input file (standard input by default) for lines matching a pattern specified by thePatternparameter. These patterns are full regular expressions as in theedcommand (except for the \ (backslash) and \\ (double backslash)). The following rules also apply to theegrepc...
Examples To use an extended pattern that contains some of the pattern-matching characters +, ?, |, (, and ), enter: egrep "\(([A-z]+|[0-9]+)\)" my.txt This displays lines that contain letters in parentheses or digits in parentheses, but not parenthesized letter-digit combinations....