Tutorial by Examples: egrep

Print lines matching a pattern (PCRE grep)

perl -ne'print if /foo/' file.txt Case-insensitive: perl -ne'print if /foo/i' file.txt

Perl Language • Perl one-liners

$ egrep '^(0|1)+ [a-zA-Z]+$' searchfile.txt 011 AaBBS

grep • Difference between grep, egrep, fgrep, pgrep.

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