source
in place of .
is undefined#!/bin/sh
source /usr/lib/myfile.sh
#!/bin/sh
. /usr/lib/myfile.sh
Your script uses a shell feature not supported by the shebang. Either rewrite the script to be portable, or change the shebang to explicitly require a shell like Bash.
source
is a Bash/Ksh specific, readable synonym for
.
. In this case, you can for the most part easily replace
source
with .
Do note that source myfile
in POSIX sh only searches
$PATH
, while Bash/Ksh will additionally search the current
directory.
None
ShellCheck is a static analysis tool for shell scripts. This page is part of its documentation.