How do I use source command under UNIX / Linux / BSD / OS X operating systems?
The source command in shell is used to execute commands from a file in the current shell. This is useful to load function or variables stored in another file.
source command syntax
The syntax is as follows:
source filename source /path/to/file
It will read and execute commands from given FILENAME in the current shell. The entries in $PATH are used to find the directory containing FILENAME.
source command Examples
Create a function file called functions.sh as follows:
hello(){ echo "I'm hello()" } getos(){ echo "OS is - $(uname)" }
Create a shell script called test.sh as follows
#!/bin/bash source functions.sh # call hello function hello # call getos function getos
Save and close the file. Run it as follows:
chmod +x test.sh
./test.sh
See also:
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