Hello,
I am trying to create an iptables script with tail ,sed and awk.
1st Request: Search keyword "secret" in access.log file
2nd Request: Get first column matching lines (ip address)
3rd Request: Save it to a file
This is what I did so far:
grep.sh
It prints out all ip address but not searching for the keyword "secret".
When I clear shebang symbol existing at the beginning of the following lines, it does not print matching output.
Is it possible to assign the pipe output to a variable so that I can use that value in following steps for iptables command?
hi,
I am searching error and exception in my log and >> to report file,
my code is :
sed -n '//p;//p' $ARIBA_LOG_DIR/MyLog.txt >> $LOG_ERR_REP
I need to report avove 5 line, that line and bellow 5 line..
what change is required in my code? (1 Reply)
I am new to UNIX......I have one file which contains thousnads of records with header and tailer.
Header
Record 1
Record 2
....
....
Last Record
Trailer
I want to concatenate Header and Trailer in the first line....now the output should look like this:
Header: Header value, Trailer:... (2 Replies)
Hello,
I have a logfile which is in this format:
1211667249500#3265
1211667266687#2875
1211667270781#1828
Is there a way to read the logfile line by line every time I execute the code and put the two numbers in the line in two separate variables?
Something like:
1211667249500#3265... (7 Replies)
HI i have to copy the last 5000 lines form a log file and copy the same in the same file .overwriting the same log file.
ex: tail -5000 testfile1 > testfile2
cat testfile2
mv tesftfile2 testfile1
will produce the correct result.but i want to have this done in one line???? (4 Replies)
I know this has been asked before but I just can't parse the syntax as explained. I have a set of files that has user information spread out over two lines that I wish to merge into one:
User1NameLast User1NameFirst User1Address
E-Mail:User1email
User2NameLast User2NameFirst User2Address... (11 Replies)
Can anyone explain the below sed oneliner?
sed -e ':a' -e '$q;N;11,$D;ba'
It works same as tail command.
I just want to know how it works.
Thanks (1 Reply)
Hi All,
I am new to unix.
In this forum some days back, I have read something like below:
1) Do not use perl if awk can do your work.
2) Do not use awk if sed can do your work.
.
.
.
I do not re-collect the whole thing. I think it is good to know the precedence of using these... (2 Replies)
Hi,
I am running a script sample.sh in bash environment .In the script i am using sed and awk commands which when executed individually from terminal they are getting executed normally but when i give these sed and awk commands in the script it is giving the below errors :-
./sample.sh: line... (12 Replies)
All, I appreciate any help you can offer here as this is well beyond my grasp of awk/sed...
I have an input file similar to:
&LOG
&LOG Part: "@DB/TC10000021855/--F"
&LOG
&LOG
&LOG Part: "@DB/TC10000021852/--F"
&LOG Cloning_Action: RETAIN
&LOG Part: "@DB/TCCP000010713/--A"
&LOG
&LOG... (5 Replies)
Discussion started by: KarmaPoliceT2
5 Replies
LEARN ABOUT PLAN9
tail
TAIL(1) General Commands Manual TAIL(1)NAME
tail - deliver the last part of a file
SYNOPSIS
tail [ +-number[lbc][rf] ] [ file ]
tail [ -fr ] [ -n nlines ] [ -c ncharacters ] [ file ]
DESCRIPTION
Tail copies the named file to the standard output beginning at a designated place. If no file is named, the standard input is copied.
Copying begins at position +number measured from the beginning, or -number from the end of the input. Number is counted in lines, 1K
blocks or characters, according to the appended flag or Default is -10l (ten ell).
The further flag causes tail to print lines from the end of the file in reverse order; (follow) causes tail, after printing to the end, to
keep watch and print further data as it appears.
The second syntax is that promulgated by POSIX, where the numbers rather than the options are signed.
EXAMPLES
tail file
Print the last 10 lines of a file.
tail +0f file
Print a file, and continue to watch data accumulate as it grows.
sed 10q file
Print the first 10 lines of a file.
SOURCE
/sys/src/cmd/tail.c
BUGS
Tails relative to the end of the file are treasured up in a buffer, and thus are limited in length.
According to custom, option +number counts lines from 1, and counts blocks and characters from 0.
TAIL(1)