One common mistake in
shell setup files (2.2)
is lines like these:
`...` |
source .aliases
echo "Logged in at `date`" >> login.log |
|---|
What's wrong with those lines? Both use
relative pathnames (1.21)
for the files (.aliases, login.log), assuming the files
are in the home directory.
Those lines won't work when you start a
subshell (38.4)
from somewhere besides your home directory, because your files
.cshrc or ENV (like .kshrc) are read whenever
a shell starts. If you ever use the
source or . commands (44.23)
to read the .profile and .login from outside your home
directory, you'll have the same problem.
Use absolute pathnames instead. As article
14.11
explains, the pathname of your home directory is in the tilde
(~) operator or the $HOME or $LOGDIR
environment variable:
source ~/.aliases
echo "Logged in at `date`" >> ~/login.log
