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)
Folks,
I am wondering that i can use something like this in one line.
For example, $((cat filename > wc -l) / 2)
It doesn't work; how to get it work using command substitution?
Moreover, is there any option for wc -l not to return filename after the line counts?
wc -l filename would... (3 Replies)
I am using egrep to extract numbers from a file and storing them as variables in a script. But I am not able to do any arithmetic operations on the variables using "expr" because it stores them as char and not integers. Here is my code and the error I get. Any help will be appreciated.
#!/bin/sh... (3 Replies)
Yes I know tcsh sucks for scripting and arithmetic but I have to write a script for multiple users and they all use tcsh.
I have this variable that I 'set' with but pulling numbers off of stings with
set STUFF = `grep string file | awk command`
Now I would like to add up the numbers that... (4 Replies)
Hello,
I have a list of 'inputs' and i want to convert those on the second list named 'Desired Outputs', but i don't know how to do it?
Inputs Desired Outputs
1 2
94 4
276 8
369 10
464 12 ... (0 Replies)
Hi Friends,
please advise on shell script to add two time stamps
for example :
a=12:32
b=12:00
c=a+b=00:32
please help me to find shell script to add to two time stamps, as i need to convert time from EST to GMT or SST to prepare status of jobs in unix and to specify estimated time to... (3 Replies)
Hello Experts,
In my shell I need to perform some simple subtraction on a value returned as a result of the "wc" command. The code:
scanFromLine="100" ## This is returned as string as a result of some operation
totalLines=`wc -l "${latestLogFile}" | awk '{print $1}'` ## eg: 200
... (2 Replies)
Hello,
Could someone explain how this one is possible:
# @ x = 10 - 11 + 3
# echo $x
-4
I know that writing script using csh is bad idea, but I need to write few lines.
thanks
Vilius (2 Replies)
I have a fundamental question on C pointer arithmetry..
Suppose i have a c string pointer already pointing to a valid location, Can I just do a
charptr = charptr +1;
to get to the next location, irregardless if my program is 32 or 64 bits?
or should i do it this way:
charptr =... (1 Reply)
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:
tr -cd < afile | wc -c
I am also able to get the total number of characters using:
wc -c afile
How do I divide the first... (2 Replies)
Discussion started by: ngabrani
2 Replies
LEARN ABOUT DEBIAN
combine
COMBINE(1)COMBINE(1)NAME
combine - combine sets of lines from two files using boolean operations
SYNOPSIS
combine file1 and file2
combine file1 not file2
combine file1 or file2
combine file1 xor file2
_ file1 and file2 _
_ file1 not file2 _
_ file1 or file2 _
_ file1 xor file2 _
DESCRIPTION
combine combines the lines in two files. Depending on the boolean operation specified, the contents will be combined in different ways:
and Outputs lines that are in file1 if they are also present in file2.
not Outputs lines that are in file1 but not in file2.
or Outputs lines that are in file1 or file2.
xor Outputs lines that are in either file1 or file2, but not in both files.
"-" can be specified for either file to read stdin for that file.
The input files need not be sorted, and the lines are output in the order they occur in file1 (followed by the order they occur in file2
for the two "or" operations). Bear in mind that this means that the operations are not commutative; "a and b" will not necessarily be the
same as "b and a". To obtain commutative behavior sort and uniq the result.
Note that this program can be installed as "_" to allow for the syntactic sugar shown in the latter half of the synopsis (similar to the
test/[ command). It is not currently installed as "_" by default, but you can alias it to that if you like.
SEE ALSO join(1)AUTHOR
Copyright 2006 by Joey Hess <joey@kitenet.net>
Licensed under the GNU GPL.
moreutils 2012-04-09 COMBINE(1)