04-08-2020
i appreciate your help.
output still 0,
ive trace the code:
[root@srv ~]# bash -x script.sh
+ LOG=/var/log/scan.log
+ TOTAL=0
+ grep Virus /var/log/scan.log
+ read _ _ NUM
+ TOTAL=4
+ read _ _ NUM
+ TOTAL=9
+ read _ _ NUM
+ TOTAL=9
+ read _ _ NUM
+ echo 0
0
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi
I have the following file, how I will calculate the sum of all the entries in the file.
> cat abc
2
3
4
now the sum should be 2+3+4 = 9 (4 Replies)
Discussion started by: sdosanjh
4 Replies
2. Shell Programming and Scripting
Sorry for the duplicate thread this one is similar to the one in
https://www.unix.com/shell-programming-scripting/88132-awk-sed-script-read-values-parameter-files.html#post302255121
Since there were no responses on the parent thread since it got resolved partially i thought to open the new... (4 Replies)
Discussion started by: rajan_san
4 Replies
3. Shell Programming and Scripting
Hi,
I have a file and I want to sum all the numbers in it.
Example of the file:
0.6714359
-3842.59553830551
I used your forum (https://www.unix.com/shell-programming-scripting/74293-how-get-sum-all-lines-file.html) and found a script, what worked for me:
awk '{a+=$0}END{print a}'... (8 Replies)
Discussion started by: mario8eren
8 Replies
4. Shell Programming and Scripting
Hi,
So I'm kinda new to shell scripts and the like. I've picked up quite a bit of use from browsing the forums here but ran into a new one that I can't seem to find an answer for.
I'm looking to parse/find a string AND the next 15 or so charachters that follow the string within a text file... (1 Reply)
Discussion started by: kar23me
1 Replies
5. Shell Programming and Scripting
Hi friends,
This is sed & awk type question.
I have a text file which has numbers spread all over the file. I want to sum the series of numbers whenever i find it and produce an output file with the sum. For example
###start of input text file ####
abc
def
ghi
1
2
3
4
kjld
random... (3 Replies)
Discussion started by: kaaliakahn
3 Replies
6. Shell Programming and Scripting
Hi friends,
This is sed & awk type question. It is slightly different from my previous question.
I have a text file which has numbers spread all over the file. I want to sum the series of numbers (but no more than 10 numbers in series) whenever i find it and produce an output file with the... (4 Replies)
Discussion started by: kaaliakahn
4 Replies
7. UNIX for Dummies Questions & Answers
Dear everyone,
I have a big file with many information in it, but I just want some lines.
I don't know exactly what the number of the line I want, I only know some part of these line. It all starts with the word 'F(tot :1 )'
I use grep command and find it. It looks like that on the screen:... (3 Replies)
Discussion started by: phamnu
3 Replies
8. Shell Programming and Scripting
I have a simple text file having payment amount value on each line. At the end of day 'n' number of payments created difference in amount that I need to match from this file.
I have information about how many payments created difference and difference amount. Please help me to build shell... (3 Replies)
Discussion started by: swats007
3 Replies
9. Shell Programming and Scripting
Hi,
I have a text file like this
6.0000E-02 0.00000E+00 0.0000 0.00000E+00 0.0000
7.0000E-02 5.00000E-10 1.0000 5.00000E-10 1.0000
8.0000E-02 3.00000E-09 0.4082 3.00000E-09 0.4082
9.0000E-02 3.50000E-09 0.3780 3.50000E-09 0.3780
1.0000E-01 1.00000E-09... (2 Replies)
Discussion started by: f_o_555
2 Replies
10. Shell Programming and Scripting
I have a file where every line includes four expressions with a caret in the middle (plus some other "words" or fields, always separated by spaces). I would like to extract from this file, all those lines such that each of the four expressions containing a caret appears in at least four different... (9 Replies)
Discussion started by: uncleMonty
9 Replies
TAIL(1) User Commands TAIL(1)
NAME
tail - output the last part of files
SYNOPSIS
tail [OPTION]... [FILE]...
DESCRIPTION
Print the last 10 lines of each FILE to standard output. With more than one FILE, precede each with a header giving the file name.
With no FILE, or when FILE is -, read standard input.
Mandatory arguments to long options are mandatory for short options too.
-c, --bytes=[+]NUM
output the last NUM bytes; or use -c +NUM to output starting with byte NUM of each file
-f, --follow[={name|descriptor}]
output appended data as the file grows;
an absent option argument means 'descriptor'
-F same as --follow=name --retry
-n, --lines=[+]NUM
output the last NUM lines, instead of the last 10; or use -n +NUM to output starting with line NUM
--max-unchanged-stats=N
with --follow=name, reopen a FILE which has not
changed size after N (default 5) iterations to see if it has been unlinked or renamed (this is the usual case of rotated log files);
with inotify, this option is rarely useful
--pid=PID
with -f, terminate after process ID, PID dies
-q, --quiet, --silent
never output headers giving file names
--retry
keep trying to open a file if it is inaccessible
-s, --sleep-interval=N
with -f, sleep for approximately N seconds (default 1.0) between iterations; with inotify and --pid=P, check process P at least once
every N seconds
-v, --verbose
always output headers giving file names
-z, --zero-terminated
line delimiter is NUL, not newline
--help display this help and exit
--version
output version information and exit
NUM may have a multiplier suffix: b 512, kB 1000, K 1024, MB 1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and so on for T,
P, E, Z, Y.
With --follow (-f), tail defaults to following the file descriptor, which means that even if a tail'ed file is renamed, tail will continue
to track its end. This default behavior is not desirable when you really want to track the actual name of the file, not the file descrip-
tor (e.g., log rotation). Use --follow=name in that case. That causes tail to track the named file in a way that accommodates renaming,
removal and creation.
AUTHOR
Written by Paul Rubin, David MacKenzie, Ian Lance Taylor, and Jim Meyering.
REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report tail translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
head(1)
Full documentation at: <http://www.gnu.org/software/coreutils/tail>
or available locally via: info '(coreutils) tail invocation'
GNU coreutils 8.28 January 2018 TAIL(1)