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UNIX for Beginners Questions & Answers
Grep command to show the number of results
Post 303042557 by MadeInGermany on Sunday 29th of December 2019 01:30:45 PM
12-29-2019
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When I type a command at the command line it supplies one result and the exact same command in a script
egrep '^01|^02|^03|^04' file > fileout
count = 29353
same count in the script yields a count of 23492
is there any reason this could be happening. (1 Reply)
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I want to display "no results found" if a grep search of a name that the user inputs is not found anywhere in a certain file,
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Hi,
I have a log file without date/time, and I want that everytime tail|grep find something it displays the date/time and the line. I have tried something like this command but without any luck to display the date/time:
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I'm using the command grep -l XYZ to get a list of files containing the string XYZ. Then I using the comand ls -l ABC to get the create date timestamp of the each file. I've tried combining the comands using the pipe command, grep -l XYZ | ls -l, but its not working. What am I doing wrong? (3 Replies)
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Can I modify the grep command to show only a process name?
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Hi,
I am currently reading a tar file and searching for a particular word using grep e.g. Plane. At the moment, if a sentence is found with the word "Plane" the sentence itself is piped to another file.
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Hello Guys,
I have created function which is as follow:
tail -f filename |grep "Key word"
output from this command
19-11-2011 21:09:15,234 - INFO Numbement - error number:result = :11
19-11-2011 21:09:15,286 - INFO Numbement - error number:result = :11
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Hi,
i have a file hello.log which as several line that look like the below
2015-12-07 09:46:56 0:339 120.111.12.12 POST /helloWorld
2015-12-07 09:46:57 0:439 122.111.12.12 POST /helloWorld
....
when i grep expecting to see results like the below.
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LEARN ABOUT HPUX
head
head(1) General Commands Manual head(1) NAME
head - give first few lines SYNOPSIS
count] [file ...] Obsolescent: [file ...] DESCRIPTION
prints on standard output the first count lines of each of the specified files, or of the standard input. If count is omitted it defaults to 10. If multiple files are specified, outputs before each file a line of this form: file Options The quantity of output is measured in bytes. The number of units of output. This option is provided for backward compatibility (see below) and is mutually exclusive of all other options. The quantity of output is measured in lines; this is the default. The number of lines (default) or bytes output. count is an unsigned decimal integer. If (or is not given, the default quantity is 10. This option provides the same func- tionality as the option, but in a more standard way. Use of the option is recommended where portability between systems is important. EXTERNAL INFLUENCES
Environment Variables determines the interpretation of text within file as single and/or multi-byte characters. determines the language in which messages are displayed. If or is not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty variable. If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are set to "C". See environ(5). International Code Set Support Single- and multi-byte character code sets are supported. WARNINGS
The length of the input lines is limited to bytes. SEE ALSO
tail(1), cat(1), more(1), pg(1). STANDARDS CONFORMANCE
head(1)