Syntax

Parameters

Parameter to [ or test | Details |

——— | —–– |

File Operators | Details |-e "$file" | Returns true if the file exists.|-d "$file" | Returns true if the file exists and is a directory|-f "$file" | Returns true if the file exists and is a regular file|-h "$file" | Returns true if the file exists and is a symbolic link|String Comparators| Details |-z "$str" | True if length of string is zero |-n "$str | True if length of string is non-zero |"$str" = "$str2" | True if string $str is equal to string $str2. Not best for integers. It may work but will be inconsitent |"$str" != "$str2" | True if the strings are not equal |Integer Comparators | Details |"$int1" -eq "$int2" | True if the integers are equal |"$int1" -ne "$int2" | True if the integers are not equals |"$int1" -gt "$int2" | True if int1 is greater than int 2 |"$int1" -ge "$int2" | True if int1 is greater than or equal to int2"$int1" -lt "$int2" | True if int1 is less than int 2 |"$int1" -le "$int2" | True if int1 is less than or equal to int2 |

Remarks

There are many comparator parameters available in bash. Not all are yet listed here.