Zelduh Mac OS
chsh -s /bin/tcshwill change your shell to tcsh
What's new in Zed 1.1.0: This is a big one: we have yet another way to edit files in Zed: Zedd. No, that's not a typo. Zedd is the Zed daemon, a process you can run to expose a file system to Zed that offers a bit more flexibility, most importantly: the ability to run external programs (think: linters, git etc.).
Shell hell:Three or four unix shell programs aredistributed with Mac OS X. These aretcsh, bash and zsh; kshjoins the family with 10.4.x. Each has its own syntax, but tcsh isfundamentally different from the others. Here are a couple ofsimple but essential examples of how the syntax differs:
- Chsh -s /bin/tcsh will change your shell to tcsh Shell hell: Three or four unix shell programs are distributed with Mac OS X. These are tcsh, bash and zsh; ksh joins the family with 10.4.x. Each has its own syntax, but tcsh is fundamentally different from the others. Here are a couple of simple but essential examples of how the syntax differs.
- Zsh is included with OS X (in /bin/zsh), but even if your friend installed a newer version of zsh, you don't necessarily need to uninstall or remove it.
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| operation | tcshor csh syntax | zsh,bash, sh, ksh syntax |
| setting an environment variable (example) | setenv DISPLAY :0.0 | export DISPLAY=:0.0 |
| making an alias (example) | alias calc 'open -a calculator' | alias calc='open -acalculator' |
You can see that the two sets of commands are incompatable. If you did a new or clean installof OS X version 10.3.x, the default user shell isbash. Bash is essentially an enhanced and GNU freewareversion of the original Bourne shell, sh. Unless you happento like bash, I recommend either switching to tcsh orzsh.
If you are using OS X version10.2.x, 10.1.x or 10.0.x, the default user shell istcsh. tcsh is an enhanced version of csh, the'c-shell,' which is more user-friendly than the Bourne shell butearly implementations werebuggy.
Zelduh Mac Os X
Many of us who are long-time tcsh users will be uncomfortable withbash. Many crystallography programs (like cns) seem to makethe assumption that you are a tcsh user. (I've set up all thefink-installable programs to work with any shell.) If you are usedto tcsh syntax and suddenly find yourself using bash, this will beproblematic. I find bash as a user shell a bit uncomfortable,and prefer tcsh or zsh. I have in factmadezsh my default user shell. zsh is the most user-friendlyof all the shells, as well as the most powerful. (It is anenhanced version of ksh, but with all the user-friendlyfunctionality of tcsh plus lots of other great things likerecursive globbing, remote file completions, a whole bunch ofreally useful functions that are included,etc.).