That's not how pipes work. Unless perl reads in the log entry in the first place it can't print it back out.
Try:
There's probably a snappier and perl-less solution but without knowing what your system and shell is I can't know what date utilities, version of awk, etc. you have available.
Hello Dudes,
I have a task to make a unix shell script that should search for a
specific TEXT in a file.If that TEXT is found, shell script should add
a comment statement before that TEXT line.
Ex : LINE 1 xxxxx
LINE 2 xxxx CALL xxxx
LINE 3 xxxx PERFORM UNTIL
if i... (1 Reply)
I am currently writing a script to compare a file list created over an FTP connection to a local directory.
I have cleaned the FTP file list up so that I just have a raw list of filenames however due to the directory structure employed (both locally and on the ftp site) I need to prepend each line... (6 Replies)
I would like to know how to take information from a filename and place it into the text of the same file. Let's say I have a file called height_2_width_1.txt containing data that is related to a height of 2 and a width of 1, and the text originally looks like this:
where these two columns... (13 Replies)
Hi All,
I am new to unix programming. I am trying for a requirement and the requirement goes like this.....
I have a test folder. Which tracks log files. After certain time, the log file is getting overwritten by another file (randomly as the time interval is not periodic). I need to preserve... (2 Replies)
I have a number of dat-files, such as abc.dat, def.dat etc, as follows:
2011-07-01 100.0
2011-07-02 101.0
2011-07-03 101.7
I want to prepend the file with the base file name; so for abc.dat it would result in the following:
abc 2011-07-01 100.0
abc 2011-07-02 101.0
abc 2011-07-03 ... (5 Replies)
I do a lot of TSM work and I embarked on what I thought would be an easy task, and I'd be very happy for any input to save the pounding my keyboard is receiving :]
By default, the output of TSM's console has no timestamping, making it hard to sort through accurately.
This puts my console into... (5 Replies)
Hello Mates
I am trying to write a script, which appends and prepends the text in a file.
I tried testing with a small file and it worked fine.
but for the large file, the script is wiping the entire file and adds only the word to be appended in the file.
mv $file_name $file_name.bak
sed... (6 Replies)
Hi Friends,
I have the following logfile. Currently time in india is 07/31/2014 12:33:34 and i have the following content in logfile. I want to display only those entries which contain string 'Exception' within last 3 hours. In this case, it would be the last line only
I can get the... (12 Replies)
Hello ,
I am working on AIX. I have to convert Unix timestamp to normal timestamp. Below is the file. The Unix timestamp will always be preceded by
EFFECTIVE_TIME as first field as shown and there could be multiple EFFECTIVE_TIME in the file : 3.txt
Contents of... (6 Replies)
So basically I have a log file and each line in this log file starts with a timestamp:
MON DD HH:MM:SS
SEP 15 07:30:01
I need to grep all the lines between last hour timestamp and current timestamp. Then these lines will be moved to a tmp file from which I will grep for particular strings. ... (1 Reply)
Discussion started by: nms
1 Replies
LEARN ABOUT MOJAVE
english
English(3pm) Perl Programmers Reference Guide English(3pm)NAME
English - use nice English (or awk) names for ugly punctuation variables
SYNOPSIS
use English;
use English qw( -no_match_vars ) ; # Avoids regex performance penalty
# in perl 5.16 and earlier
...
if ($ERRNO =~ /denied/) { ... }
DESCRIPTION
This module provides aliases for the built-in variables whose names no one seems to like to read. Variables with side-effects which get
triggered just by accessing them (like $0) will still be affected.
For those variables that have an awk version, both long and short English alternatives are provided. For example, the $/ variable can be
referred to either $RS or $INPUT_RECORD_SEPARATOR if you are using the English module.
See perlvar for a complete list of these.
PERFORMANCE
NOTE: This was fixed in perl 5.20. Mentioning these three variables no longer makes a speed difference. This section still applies if
your code is to run on perl 5.18 or earlier.
This module can provoke sizeable inefficiencies for regular expressions, due to unfortunate implementation details. If performance matters
in your application and you don't need $PREMATCH, $MATCH, or $POSTMATCH, try doing
use English qw( -no_match_vars ) ;
. It is especially important to do this in modules to avoid penalizing all applications which use them.
perl v5.18.2 2014-01-06 English(3pm)