2014年12月19日 · The pwd binary, on the other hand, gets the current directory through the getcwd(3) ...

2014年12月12日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

The pwd binary, on the other hand, gets the current directory through the getcwd(3) ...

Otherwise, if a value for PWD is passed to the shell in the environment when it is executed, the value is an absolute pathname of the current working directory, and the value does not contain any components that are dot or dot-dot, then it is unspecified whether the shell sets PWD to the value from the environment or sets PWD to the pathname ...

2018年5月19日 · Then that will add the current directory (pwd is a command that prints the path of the current directory, and `pwd` will be replaced with the output of pwd) to the PATH variable for the duration of your current shell session (util you close the terminal). To illustrate:

Your shell has a builtin pwd, which tries to be "smart". After you did a cd to a symlink the internal pwd fakes the output as if you moved to a real directory. Pass the -P option to pwd, i.e. run pwd -P. The -P option (for “physical”) tells pwd not to do any symbolic link tracking and display the “real” path to the directory.

2022年7月15日 · What is the difference between cwd and pwd? I've tried googling it, and one of the answers mentioned that depending on some factor (which I sadly do not remember), the implementation (the code I'm assuming) is not the same? I don't suppose this is like the difference between print('x') vs return str(x) (to use a Python analogy)?

2016年2月13日 · Quick Test of pwd. As a quick test to see what pwd really prints, you can run the following: # Create a shell script containing pwd. cat <<-EOF > /tmp/test_pwd.sh #!/bin/sh pwd EOF # Make the script executable. chmod 755 /tmp/test_pwd.sh # Go somewhere on the filesystem, and call the test script. cd /etc /tmp/test_pwd.sh

2011年1月25日 · Otherwise, you can use pwd to show the current directory. But you must take care not to use a shell built-in if your shell tracks cd commands and keeps the name you used to reach the directory rather than its “actual” location. case $(pwd -P 2>/dev/null || env PWD= pwd)/ in "$(cd /home && { pwd -P 2>/dev/null || env PWD= pwd; })"/*) …

2019年2月13日 · pwd prints the directory you are currently in. It does nothing else.pwd does not take any arguments. cd without arguments changes your working directory to your home directory. It does not print anything by default. cd with an argument will change your working directory to whatever directory you supplied as an argument.