I need to divide the number of white spaces by total number of characters in a file using bash. I am able to get the number of white spaces correctly using:
Code:
tr -cd [:space:] < afile | wc -c
I am also able to get the total number of characters using:
Code:
wc -c afile
How do I divide the first number by second to get the final answer.
Can anyone help please. I am writing a kourne shell script and I am unsure how to do the following:
I have extracted a time string from a logfile, and I have another time string I want to compare it to to see if it's later than the time I'm comparing with.
i.e. expectedSLA="23:00:00", ... (2 Replies)
okay, I'm a complete beginner, and I keep getting stuck on the syntax here. I want to write a script where I read the current time as minutes and seconds, convert the minutes to seconds, and add the two, then redirect the output to a file. the command takes two arguments, which will also be... (1 Reply)
Yes I know tcsh sucks for scripting and arithmetic but I have to write a script for multiple users and they all use tcsh.
I have this variable that I 'set' with but pulling numbers off of stings with
set STUFF = `grep string file | awk command`
Now I would like to add up the numbers that... (4 Replies)
Hi Friends,
please advise on shell script to add two time stamps
for example :
a=12:32
b=12:00
c=a+b=00:32
please help me to find shell script to add to two time stamps, as i need to convert time from EST to GMT or SST to prepare status of jobs in unix and to specify estimated time to... (3 Replies)
Friends,
I have a file with contents like:
interface Serial0/4/0/0/1/1/1/1:0
encapsulation mfr
multilink
group 101
Now I need to manipulate the file in such a way that to all the numbers less than 163, 63 gets added and to all numbers greater than 163, 63 gets deducted.(The numbers... (2 Replies)
Hello all,
I'd like to know how to perform arithmetic on multiple files. I have got many tab-delimited files. Each file contains about 2000 rows and 2000 columns.
What I want to do is to to sum the values in each row & column in every file.
The following explains what I want to do;
... (9 Replies)
I have 2 numbers
xmin = 0.369000018
xmax = 0.569000006
and want to calculate
(xmax- xmin) / 5.0
I have tried using $(( )) but is always giving an error (8 Replies)
I am using bash
I have a script that takes a number, i.e. 85.152, which is always a non integer and essentially tries to get that number to be a multiple of 10. My code is as follows:
number=85.152
A=${number%.*} #Converts float to integer
typeset -i B=$(((A-20)/10)) #subtracting 20 is... (12 Replies)
I found the following issue by simply increasing a variable. The ((A++)) expression returns an error, the other expressions both return 0. Does anyone know why?
script.sh:
#! /bin/bash
A=0
B=0
C=0
((A++)) ; echo "${?}"
((B=B+1)) ; echo "${?}"
((C+=1))... (8 Replies)
Discussion started by: elbrand
8 Replies
LEARN ABOUT V7
ar
AR(1) General Commands Manual AR(1)NAME
ar - archive and library maintainer
SYNOPSIS
ar key [ posname ] afile name ...
DESCRIPTION
Ar maintains groups of files combined into a single archive file. Its main use is to create and update library files as used by the
loader. It can be used, though, for any similar purpose.
Key is one character from the set drqtpmx, optionally concatenated with one or more of vuaibcl. Afile is the archive file. The names are
constituent files in the archive file. The meanings of the key characters are:
d Delete the named files from the archive file.
r Replace the named files in the archive file. If the optional character u is used with r, then only those files with modified dates
later than the archive files are replaced. If an optional positioning character from the set abi is used, then the posname argument
must be present and specifies that new files are to be placed after (a) or before (b or i) posname. Otherwise new files are placed
at the end.
q Quickly append the named files to the end of the archive file. Optional positioning characters are invalid. The command does not
check whether the added members are already in the archive. Useful only to avoid quadratic behavior when creating a large archive
piece-by-piece.
t Print a table of contents of the archive file. If no names are given, all files in the archive are tabled. If names are given,
only those files are tabled.
p Print the named files in the archive.
m Move the named files to the end of the archive. If a positioning character is present, then the posname argument must be present
and, as in r, specifies where the files are to be moved.
x Extract the named files. If no names are given, all files in the archive are extracted. In neither case does x alter the archive
file.
v Verbose. Under the verbose option, ar gives a file-by-file description of the making of a new archive file from the old archive and
the constituent files. When used with t, it gives a long listing of all information about the files. When used with p, it precedes
each file with a name.
c Create. Normally ar will create afile when it needs to. The create option suppresses the normal message that is produced when
afile is created.
l Local. Normally ar places its temporary files in the directory /tmp. This option causes them to be placed in the local directory.
FILES
/tmp/v* temporaries
SEE ALSO ld(1), ar(5), lorder(1)BUGS
If the same file is mentioned twice in an argument list, it may be put in the archive twice.
AR(1)