I have a bash string comparison which is not working, looked for help, and found this.
HTML Code:
=
is equal to
if [ "$a" = "$b" ]
[IMG]http://www.tldp.org/LDP/abs/images/caution.gif[/IMG]Note the whitespace framing the =.
if [ "$a"="$b" ] is not equivalent to the above.
</DIV>
I do not find this to be helpful because I am asked to note the whitespace framing the = but am not told what its significance is.
The code which is not working is:
The string variables TWI_IP and TWJ_IP have equal contents but this code will always take the else branch.
Hi all,
I have a file like this
ibhib=ere
wefwfl=werfe
sfdes=wef
From this file, i need to get the lefthand side string with respect to the corresponding righthand side string. i.e, I need to get the string "ere" with respect to "ibhib".
But i am stuck with how to compare a string... (1 Reply)
Hello experts,
(tcsh shell)
Quite new to shell scripting...
I have got a file with a single word on each line. Want to be able to make a comparison such that i can read pairs of words that are ROT13 to each other. Also, i would like to print the pairs to another file.
Any help... (5 Replies)
I'm running the following script to compare string values to a regexp:
for entry in $(lpinfo -v | cut -c 1-); do
if
then
echo "blah"
continue
fi
done
Whenever I run it, each token of lpinfo is being interpreted as a command and I get errors such as:
... (2 Replies)
Hi,
I have the below logic. Here 'X' is a variable having some string.
if
then
echo "i dont need to go to ofc"
else
echo "i need to go to ofc"
Please help me to write it in unix.
Thanks. (2 Replies)
#!/bin/sh
PRINTF=/usr/bin/printf
MACHINE_NAME=`uname -n`
TIME=`date +"%H"`
$PRINTF "Welcome to $MACHINE_NAME. What is your name?\n"
read NAME
if ; then
$PRINTF "Good morning $NAME, how are you?\n"
elif ; then
$PRINTF "Good afternoon $NAME, how are you?\n"
else
$PRINTF "Good... (2 Replies)
continuing from my previous post, whose link is given below as a reference
https://www.unix.com/shell-programming-scripting/171076-shell-scripting.html#post302573569
consider there is create table commands in a file for eg:
CREATE TABLE `Blahblahblah` (
`id` int(11) NOT NULL... (2 Replies)
attempting the hangman program. This was an optional assignment from the professor. I have completed the logical coding, debugging now.
##I have an array $wordString that initializes to a string of dashes
##reflecting the number of letters in $theWord
##every time the user enters a (valid)... (5 Replies)
I have the logic below to look up for matches within the columns between the two files with awk.
In the if statement is where the string comparison is attempted with ==
The issue seems to be with the operands, as
1. when " '${SECTOR}' " -- double quote followed by single quote -- awk matches... (1 Reply)
A number of people have asked me how to get started with Vue.js and my reply before today was to Google "Vue.js". That has changed and my recommendation to anyone who wants to learn the fastest growing, easiest to learn and use Vue.js web dev framework is to watch this video tutorial series:
... (0 Replies)
Discussion started by: Neo
0 Replies
LEARN ABOUT PHP
min
MIN(3) 1 MIN(3)min - Find lowest valueSYNOPSIS
mixed min (array $values)
DESCRIPTION
mixed min (mixed $value1, mixed $value2, [mixed $...])
If the first and only parameter is an array, min(3) returns the lowest value in that array. If at least two parameters are provided,
min(3) returns the smallest of these values.
Note
Values of different types will be compared using the standard comparison rules. For instance, a non-numeric string will be com-
pared to an integer as though it were 0, but multiple string values will be compared alphanumerically. The actual value returned
will be of the original type with no conversion applied.
PARAMETERS
o $values
- An array containing the values.
o $value1
- Any comparable value.
o $value2
- Any comparable value.
o $...
- Any comparable value.
RETURN VALUES min(3) returns the parameter value considered "lowest" according to standard comparisons. If multiple values of different types evaluate as
equal (e.g. 0 and 'abc') the first provided to the function will be returned.
EXAMPLES
Example #1
Example uses of min(3)
<?php
echo min(2, 3, 1, 6, 7); // 1
echo min(array(2, 4, 5)); // 2
// The string 'hello' when compared to an int is treated as 0
// Since the two values are equal, the order they are provided determines the result
echo min(0, 'hello'); // 0
echo min('hello', 0); // hello
// Here we are comparing -1 < 0, so -1 is the lowest value
echo min('hello', -1); // -1
// With multiple arrays of different lengths, min returns the shortest
$val = min(array(2, 2, 2), array(1, 1, 1, 1)); // array(2, 2, 2)
// Multiple arrays of the same length are compared from left to right
// so in our example: 2 == 2, but 4 < 5
$val = min(array(2, 4, 8), array(2, 5, 1)); // array(2, 4, 8)
// If both an array and non-array are given, the array is never returned
// as comparisons treat arrays as greater than any other value
$val = min('string', array(2, 5, 7), 42); // string
// If one argument is NULL or a boolean, it will be compared against
// other values using the rule FALSE < TRUE regardless of the other types involved
// In the below examples, both -10 and 10 are treated as TRUE in the comparison
$val = min(-10, FALSE, 10); // FALSE
$val = min(-10, NULL, 10); // NULL
// 0, on the other hand, is treated as FALSE, so is "lower than" TRUE
$val = min(0, TRUE); // 0
?>
SEE ALSO max(3), count(3).
PHP Documentation Group MIN(3)