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How to use “|” in egrep It works as or condition. It displays lines that have either of the words. Here, it prints a line that has abc or ABC. How to use fgrep in Linux The fgrep is deprecated. Still, the command’s usage is there in many installations. The fgrep is also call...
KDUMP_IDE_NOPROBE_COMMANDLINE="" #-y:同-i,忽略大小写 #-v:反相匹配:匹配/etc/passwd文件中不包含“root"字符串的行 [root@localhost ~]# grep -v "root" /etc/passwd bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin ...
The above command returns every line of myfile.txt. Do this instead: fgrep"."myfile.txt Then only the lines that have a literal '.' in them are returned. fgrep helps us not bother escaping our meta characters. pgrep pgrep is an acronym that stands for "Process-ID Global Regular Express...
Linux grep Command Example Like here, when the command is run without escaping'(' ')'and'|'then it searched for the complete string i.e.“(f|g)ile”in the file. But when the special characters were escaped, then instead of treating them as part of string, grep treated them as meta...
— command line had too few arguments — input file could not be opened If the program fails to open one input file, it tries to go on to look at any remaining input files, but it returns1even if it succeeds in finding matches in other input files. ...
fgrep Command Examples 1. To Interpret PATTERN as an extended regular expression: # fgrep --extended-regexp PATTERN # fgrep -E PATTERN 2. To Interpret PATTERN as a list of fixed strings: # fgrep -F PATTERN # fgrep --fixed-strings PATTERN ...