Note that the braces aren't needed either unless what you want to add to the variable could be interpreted by the shell to be part of the variable name.
produces
Can anybody plz help me to solve this puzzle?
amt=00002280674231
((amt = amt + 0)) # to remove leading zero's
echo $amt
prints -2014293065
but this works fine for numbers less than 2000000000.
Thanks
S (3 Replies)
Hello
i use bash and i added a path variable for 2 files /rscr and /uscr in /etc/profile
/rscr working fine but the other one shows command not found
and when i try to type whereis for scripts in /rscr it shows them but the other one shows nothing... thanks :b: (3 Replies)
Hi,
i have to form the header and add fillers(spaces) to it.
I have done something like this. i have added 10 spaces at the end
HDR="AAAABBBBCCNN "
echo $HDR >> file1.dat
but the spaces are not being stored in the file. How to add the spaces. (2 Replies)
Hi,
I wanted to add specific text to each row in a text file containing three rows. Example:
0 8 7 6 5 5
7 8 9 0 7 9
7 8 9 0 1 2
And I want to add a 21 at the beginning of the first row, and blank spaces at the beginning of the second two rows. To get this:
21 0 8 7 6 5 5
7 8... (4 Replies)
for i `cat abc.txt`
do
m= `expr $i + 2`
echo $m
done
i wrote this script to assing value to m. but i got the error
"a.sh: 423: not found"
please help me to sort out this issue (2 Replies)
I am attempting to insert multiple lines of text into a specific place in a text file based on the lines above or below it.
For example, Here is a portion of a zone file.
IN NS ns1.domain.tld.
IN NS ns2.domain.tld.
IN ... (2 Replies)
Here is one I am baffled with; I have not used unix for a while and now that I am back it has been fun remembering and I have enjoyed it, for the most past. this is in ksh.
I need to search in a file for the line with X1 and cut columns 20-25, put them into a variable, added them (dollar... (3 Replies)
is this possible?
its kind of like incrementing the value of a number in a variable. but in this case, instead of the value of the variable being a number, it's just contents/strings/characters/alpha-numeric etc. NOT a number.
For instance:
VAR=Tommy
for all in $(blah blah)
do
... (2 Replies)
Hey guys,
I need to write a script that will add a specific text at the end of a specific line (of a text file). but the line is a variable
this is my text file :
device_2 ansible_ssh_host=127.0.0.1 ansible_ssh_port=30000 ansible_ssh_user='root'
device_2 ansible_ssh_host=127.0.0.1... (1 Reply)
Hi All,
I would have though this would have been simple, but...
I have text in a variable that I need to insert into a bunch of other files... The text is simple:
... (2 Replies)
Discussion started by: joeg1484
2 Replies
LEARN ABOUT PHP
boolval
BOOLVAL(3) 1 BOOLVAL(3)boolval - Get the boolean value of a variableSYNOPSIS
boolean boolval (mixed $var)
DESCRIPTION
Returns the boolean value of $var.
PARAMETERS
o $var
- The scalar value being converted to a boolean.
RETURN VALUES
The boolean value of $var.
EXAMPLES
Example #1
boolval(3) examples
<?php
echo '0: '.(boolval(0) ? 'true' : 'false')."
";
echo '42: '.(boolval(42) ? 'true' : 'false')."
";
echo '0.0: '.(boolval(0.0) ? 'true' : 'false')."
";
echo '4.2: '.(boolval(4.2) ? 'true' : 'false')."
";
echo '"": '.(boolval("") ? 'true' : 'false')."
";
echo '"string": '.(boolval("string") ? 'true' : 'false')."
";
echo '"0": '.(boolval("0") ? 'true' : 'false')."
";
echo '"1": '.(boolval("1") ? 'true' : 'false')."
";
echo '[1, 2]: '.(boolval([1, 2]) ? 'true' : 'false')."
";
echo '[]: '.(boolval([]) ? 'true' : 'false')."
";
echo 'stdClass: '.(boolval(new stdClass) ? 'true' : 'false')."
";
?>
The above example will output:
0: false
42: true
0.0: false
4.2: true
"": false
"string": true
"0": false
"1": true
[1, 2]: true
[]: false
stdClass: true
SEE ALSO floatval(3), intval(3), strval(3), settype(3), is_bool(3), Type juggling.
PHP Documentation Group BOOLVAL(3)