From the course: Linux System Engineer: Bash Shell Scripting for Automation
Join today to access over 24,800 courses taught by industry experts.
File conditions
From the course: Linux System Engineer: Bash Shell Scripting for Automation
File conditions
- [Instructor] Using if conditionals, we can do quite a few tests on files. Let's get right into it. Dash e checks if the file exists. Now in Linux, everything is a file, including devices. This check doesn't discern. Dash f, however, checks if a file exists and is a file. Dash d checks if a file exists and is a directory. Dash c checks if a file exists and is a character device. Dash b checks if a file exists and is a block device. Dash p checks if a file exists and is a named pipe. Dash capital S checks if a file exists and is a socket. Dash capital L checks if a file exists and is a symbolic link. Dash g checks if a file exists and has the SGID bit set. Dash u checks if a file exists and has the SUID bit set. Dash r checks if a file exists and is readable by the current user. Dash w checks if a file exists and is writable by the current user. Dash x checks if a file exists and is executable by the current user. Dash s checks if a file exists and it has a size larger than zero…
Download courses and learn on the go
Watch courses on your mobile device without an internet connection. Download courses using your iOS or Android LinkedIn Learning app.