|
Chapter 2 Logging In |
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2.6 Use Absolute Pathnames in Shell Setup Files
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
-
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| 2.5 Tips for Speeding up Slow Logins |
|
2.7 C Shell Setup Files Aren't Read When You Want Them to Be? |
