Test - Revision history

Admin at 18:53, 6 May 2019

2019-05-06T18:53:26Z

← Older revision		Revision as of 18:53, 6 May 2019
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	When comparing strings in Bash you can use the following operators:		When comparing strings in Bash you can use the following operators:


			<b>Equals/Not Equals:</b>
	<code>string1 = string2</code> and <code>string1 == string2</code> - The equality operator returns true if the operands are equal.		<code>string1 = string2</code> and <code>string1 == string2</code> - The equality operator returns true if the operands are equal.

	- Use the = operator with the test [ command.<br />		- Use the = operator with the test [ command.<br />
	- Use the == operator with the [[ command ~~for pattern matching~~.		- Use the == operator with the [[ command..


	string1 != string2 - The inequality operator returns true if the operands are not equal.		string1 != string2 - The inequality operator returns true if the operands are not equal.


			<b>Regex Match:</b>
	string1 =~ regex- The regex operator returns true if the left operand matches the extended regular expression on the right.		string1 =~ regex- The regex operator returns true if the left operand matches the extended regular expression on the right.


			<b>Greater than/Less than:</b>
	string1 > string2 - The greater than operator returns true if the left operand is greater than the right sorted by lexicographical (alphabetical) order.		string1 > string2 - The greater than operator returns true if the left operand is greater than the right sorted by lexicographical (alphabetical) order.


	string1 < string2 - The less than operator returns true if the right operand is greater than the right sorted by lexicographical (alphabetical) order.		string1 < string2 - The less than operator returns true if the right operand is greater than the right sorted by lexicographical (alphabetical) order.


	-z string - True if the string length is zero.		<b>String Length:</b>
			-z string - True if the string length is zero.<br />
	-n string - True if the string length is non-zero.		-n string - True if the string length is non-zero.

Admin at 18:49, 6 May 2019

2019-05-06T18:49:51Z

← Older revision		Revision as of 18:49, 6 May 2019
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	- Use the = operator with the test [ command.<br />		- Use the = operator with the test [ command.<br />
	- Use the == operator with the [[ command for pattern matching.		- Use the == operator with the [[ command for pattern matching.


	string1 != string2 - The inequality operator returns true if the operands are not equal.		string1 != string2 - The inequality operator returns true if the operands are not equal.


	string1 =~ regex- The regex operator returns true if the left operand matches the extended regular expression on the right.		string1 =~ regex- The regex operator returns true if the left operand matches the extended regular expression on the right.


	string1 > string2 - The greater than operator returns true if the left operand is greater than the right sorted by lexicographical (alphabetical) order.		string1 > string2 - The greater than operator returns true if the left operand is greater than the right sorted by lexicographical (alphabetical) order.


	string1 < string2 - The less than operator returns true if the right operand is greater than the right sorted by lexicographical (alphabetical) order.		string1 < string2 - The less than operator returns true if the right operand is greater than the right sorted by lexicographical (alphabetical) order.


	-z string - True if the string length is zero.		-z string - True if the string length is zero.

Admin at 18:49, 6 May 2019

2019-05-06T18:49:14Z

← Older revision		Revision as of 18:49, 6 May 2019
Line 9:		Line 9:
	- Use the == operator with the [[ command for pattern matching.		- Use the == operator with the [[ command for pattern matching.

	string1 != string2 - The inequality operator returns true if the operands are not equal.		string1 != string2 - The inequality operator returns true if the operands are not equal.
	string1 =~ regex- The regex operator returns true if the left operand matches the extended regular expression on the right.
	string1 > string2 - The greater than operator returns true if the left operand is greater than the right sorted by lexicographical (alphabetical) order.		string1 =~ regex- The regex operator returns true if the left operand matches the extended regular expression on the right.
	string1 < string2 - The less than operator returns true if the right operand is greater than the right sorted by lexicographical (alphabetical) order.
	-z string - True if the string length is zero.		string1 > string2 - The greater than operator returns true if the left operand is greater than the right sorted by lexicographical (alphabetical) order.
	-n string - True if the string length is non-zero.
			string1 < string2 - The less than operator returns true if the right operand is greater than the right sorted by lexicographical (alphabetical) order.

			-z string - True if the string length is zero.
			-n string - True if the string length is non-zero.


	<b>Note:</b>		<b>Note:</b>

	- A blank space must be used between the binary operator and the operands.		- A blank space must be used between the binary operator and the operands.<br />
	- Always use double quotes around the variable names to avoid any word splitting or globbing issues.		- Always use double quotes around the variable names to avoid any word splitting or globbing issues.

Admin at 18:48, 6 May 2019

2019-05-06T18:48:23Z

← Older revision		Revision as of 18:48, 6 May 2019
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	<b>Note:<b>		<b>Note:</b>

	- A blank space must be used between the binary operator and the operands.		- A blank space must be used between the binary operator and the operands.
	- Always use double quotes around the variable names to avoid any word splitting or globbing issues.		- Always use double quotes around the variable names to avoid any word splitting or globbing issues.

Admin at 18:48, 6 May 2019

2019-05-06T18:48:13Z

← Older revision		Revision as of 18:48, 6 May 2019
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	-n string - True if the string length is non-zero.		-n string - True if the string length is non-zero.

	~~Following are a few points to be noted when comparing strings:~~

	A blank space must be used between the binary operator and the operands.		<b>Note:<b>
	Always use double quotes around the variable names to avoid any word splitting or globbing issues.
			- A blank space must be used between the binary operator and the operands.
			- Always use double quotes around the variable names to avoid any word splitting or globbing issues.

Admin: Created page with "The test command (or ) is used to test various conditions, or to compare strings. When comparing strings in Bash you can use the following operators:
2019-05-06T18:47:06Z

Created page with "The test command (or <code>[[ ]]</code>) is used to test various conditions, or to compare strings. When comparing strings in Bash you can use the following operators: <cod..."

New page
The test command (or <code>[[ ]]</code>) is used to test various conditions, or to compare strings.

When comparing strings in Bash you can use the following operators:

<code>string1 = string2</code> and <code>string1 == string2</code> - The equality operator returns true if the operands are equal.

- Use the = operator with the test [ command.<br />
- Use the == operator with the [[ command for pattern matching.

string1 != string2 - The inequality operator returns true if the operands are not equal.
string1 =~ regex- The regex operator returns true if the left operand matches the extended regular expression on the right.
string1 > string2 - The greater than operator returns true if the left operand is greater than the right sorted by lexicographical (alphabetical) order.
string1 < string2 - The less than operator returns true if the right operand is greater than the right sorted by lexicographical (alphabetical) order.
-z string - True if the string length is zero.
-n string - True if the string length is non-zero.

Following are a few points to be noted when comparing strings:

A blank space must be used between the binary operator and the operands.
Always use double quotes around the variable names to avoid any word splitting or globbing issues.