10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I'm trying to check if a variable'd string is only one character and use that in an if statement the only way I could find is:
$expr "${var}" : . # expr STRING : regrep
where the "." is the grep wildcard for any single character.
Whats wrong with my code here and is there a... (3 Replies)
Discussion started by: Tewg
3 Replies
2. UNIX for Dummies Questions & Answers
Hi guys,
For some reason the terminal on my mac does not let me run string manipulations commands using the expr command. I'm not sure how to fix this so I'm requesting a "work-around" to using the expr command...
This is the string I'm working with:
"neo_opls01_1.log"
And I'm trying to... (9 Replies)
Discussion started by: ah7391
9 Replies
3. Shell Programming and Scripting
Hi,
I am trying to code a unix function to calculate date difference between two date variables. I am stuck at a point where I am trying to convert hours into minutes. Below is the code I am doing.
function get_elapsed_time
{
export PROPS_FILE=temp.properties
export... (8 Replies)
Discussion started by: Nutan
8 Replies
4. Shell Programming and Scripting
Hi
Can anyone explain me the usage of this command and the arguments used here and what will be the expected output :
v_num=`expr nav_d_20100204_1759 : '*\(*\)'`
what will be the value returned in v_num.
Thanks in Advance!!!
Regards
Naveen Purbia (3 Replies)
Discussion started by: trying_myluck
3 Replies
5. Shell Programming and Scripting
Hello, I am new to the Bash scripting language, and was given a tutorial page on how to setup a file. However I am trying to use cygwin to run this file and it is not working.
$ vi averagetime.sh
#
#
#
echo "Enter Dictorinary File Text "
read dict
echo "Enter Grid Name"
read grid... (13 Replies)
Discussion started by: killerqb
13 Replies
6. UNIX for Dummies Questions & Answers
Hi friends
how can i execute expr $va1 * $var2
provided i m not supposed to use '/' also the
nglob variable is turned off. (4 Replies)
Discussion started by: ashishj
4 Replies
7. UNIX for Dummies Questions & Answers
:)
hi Unix gurus,
Pls consider the following piece of code
str='hello'
length=echo $str|wc -c
echo $length
y= ` expr \( 80 - $length \) `
echo $y
:confused:
The last echo stmt is displaying 0 as the result.
If i put direct value like 6 instead of $length in i 3rd stmt it is giving... (8 Replies)
Discussion started by: ravi raj kumar
8 Replies
8. UNIX for Dummies Questions & Answers
hi guys....
i hava a command expr... where i m adding a value in a loop
like
Tc=`expr $Tc\+ $l`
where
Tc is declred as a variable and every time l contains a new vaue
if
Tc =0 initially
and l =2
Tc should be equal to 0+ 2
and then
l = 4
Tc = 2+4
and dispaly as 6
but after... (5 Replies)
Discussion started by: madhu_aqua14
5 Replies
9. UNIX for Dummies Questions & Answers
I'm writing a unix script that simply does some basic command line stuff for a whole lot of similar directories (ls *.dat > foo.bar). Its my first script ever, and its going ok, except I can't, for the life of me, figure out how to get arithmetic to work in the script.
FIVE=5
MY_NUMBER='expr... (4 Replies)
Discussion started by: benu302000
4 Replies
10. UNIX for Dummies Questions & Answers
I am looking for the correct syntax on the expr command in UNIX. I have a script that I am building at the moment. the script is creating file1 that is an actual .sql file that is going inside the oracle database to get some information in there. It take that information, puts it inside another... (2 Replies)
Discussion started by: wolf
2 Replies