The Sed/Grep command is really confusing me. I know I'm missing something that should be really easy to fix. My program displays multiple names after I ask it to display only one, How do I get it to do only one??
it looks like this:
Please enter a name to display?
>> John
(A list then... (9 Replies)
Our log file looks like this:
2010-11-18 00:57:01,698 ERROR
Shipment Error Log:Error Details - Account Id:3962, PO:2710015, Line:2, File:221112901, Version:V1, Desc:Order cannot not be shipped as there are no line items in New state
2010-11-18 14:59:39,960 ERROR... (11 Replies)
Hi,
I am in the process of configuring a script, and i intend it to retrieve logs for previous four hours, and then scan for predefined errors.
I am kind of stuck on the log retrieval part where the script will run early morning like 1 AM or 2 AM, the command as posted below will give me... (4 Replies)
Hello,
Can any one please assist how to scirpt it:
Every day a new log file is create and I want to process only the one generated yesterday and get the data of column 3 and 6.
For example today's date is 24 then I want to get the data of log file created on 23rd.
Log Files in... (7 Replies)
I want to grep only last 5 mins of a log file in bash
I have a syslog which contains the following
Mon Jul 11 20:47:42
Mon Jul 11 20:47:52
The following works in Unix but not in AIX . Please can you let me know as to what would be the AIX equivalent
Code: for (( i = 5; i >=0;... (1 Reply)
Dear Guru's
I've a requirment to grep for a string in series of log files that are getting generated almost every minute.
I'm looking to schedule a script every 15 mountes,in order to check if the error string has been generated in any of the log files generated in last 15 minutes.
Please... (3 Replies)
Hi All,
I have an issue which I'm trying to understand a way of doing, I have several nodes which contain syslog events which I want to force trigger an email initially (eventually leading to another method of alerting but to start with an email).
Basically the syslog file will have hours worth... (6 Replies)
I need 5 mins old logs to be dumped into a a new file.
The date formats in the two log files are
Can you suggect for both formats ?
bash-3.2$ uname -a
SunOS myserver 5.10 Generic_150400-26 sun4v sparc sun4v
---------- Post updated 05-04-16 at 12:24 AM ---------- Previous update was... (2 Replies)
I am having trouble matching *two* strings from one file anywhere in a line of a second file, and could use some help getting this figured out. My preference would be to use grep for this because I would like to take advantage of its -A option. The latter is due to the fact that I would like both... (2 Replies)
Hi,
system date format
Thu Jun 13 12:55:18 EDT 2019
My log date format
09.148.192.60 - - "GET /akamai/sureroute-test-object.html HTTP/1.1" 404 231
can someone please help me, how to get last 5mins of logs please ? I need the command
Please wrap your samples/codes in CODE TAGS,... (3 Replies)
Discussion started by: scazed
3 Replies
LEARN ABOUT FREEBSD
tail
TAIL(1) BSD General Commands Manual TAIL(1)NAME
tail -- display the last part of a file
SYNOPSIS
tail [-F | -f | -r] [-q] [-b number | -c number | -n number] [file ...]
DESCRIPTION
The tail utility displays the contents of file or, by default, its standard input, to the standard output.
The display begins at a byte, line or 512-byte block location in the input. Numbers having a leading plus ('+') sign are relative to the
beginning of the input, for example, ``-c +2'' starts the display at the second byte of the input. Numbers having a leading minus ('-') sign
or no explicit sign are relative to the end of the input, for example, ``-n 2'' displays the last two lines of the input. The default start-
ing location is ``-n 10'', or the last 10 lines of the input.
The options are as follows:
-b number
The location is number 512-byte blocks.
-c number
The location is number bytes.
-f The -f option causes tail to not stop when end of file is reached, but rather to wait for additional data to be appended to the
input. The -f option is ignored if the standard input is a pipe, but not if it is a FIFO.
-F The -F option implies the -f option, but tail will also check to see if the file being followed has been renamed or rotated. The
file is closed and reopened when tail detects that the filename being read from has a new inode number.
If the file being followed does not (yet) exist or if it is removed, tail will keep looking and will display the file from the begin-
ning if and when it is created.
The -F option is the same as the -f option if reading from standard input rather than a file.
-n number
The location is number lines.
-q Suppresses printing of headers when multiple files are being examined.
-r The -r option causes the input to be displayed in reverse order, by line. Additionally, this option changes the meaning of the -b,
-c and -n options. When the -r option is specified, these options specify the number of bytes, lines or 512-byte blocks to display,
instead of the bytes, lines or blocks from the beginning or end of the input from which to begin the display. The default for the -r
option is to display all of the input.
If more than a single file is specified, each file is preceded by a header consisting of the string ``==> XXX <=='' where XXX is the name of
the file unless -q flag is specified.
EXIT STATUS
The tail utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
To display the last 500 lines of the file foo:
$ tail -n 500 foo
Keep /var/log/messages open, displaying to the standard output anything appended to the file:
$ tail -f /var/log/messages
SEE ALSO cat(1), head(1), sed(1)STANDARDS
The tail utility is expected to be a superset of the IEEE Std 1003.2-1992 (``POSIX.2'') specification. In particular, the -F, -b and -r
options are extensions to that standard.
The historic command line syntax of tail is supported by this implementation. The only difference between this implementation and historic
versions of tail, once the command line syntax translation has been done, is that the -b, -c and -n options modify the -r option, i.e., ``-r
-c 4'' displays the last 4 characters of the last line of the input, while the historic tail (using the historic syntax ``-4cr'') would
ignore the -c option and display the last 4 lines of the input.
HISTORY
A tail command appeared in PWB UNIX.
BSD March 16, 2013 BSD