Check if a file exists in a linux script
22156
How do I tell if a regular file does not exist in Bash?
93046
How to see if the directory exists?
50579
How to find out if a file exists in C# / .NET?
106880
How do you check if a directory exists on Windows in C?
58433
What's a concise way to check that environment variables are set in a Unix shell script?
85877
How to determine what filesystem a directory exists on?
86666
Edit file based on existence of a string
5511
Check if table exists
47527
Test whether a glob has any matches in bash
135954
How to check if a directory/file/symlink exists with one command in Ruby
11742
Most pythonic way to delete a file which may not exist
46735
"which in ruby": Checking if program exists in $PATH from ruby
28597
Checking from shell script if a directory contains files
15007
How to check if file exists in a Windows Store App?
91340
Testing if a variable is empty in a shell script
25888
How to check if file exists on FTP before FtpWebRequest
53507
Test if executable exists in Python?