Home > Articles > Apple > Operating Systems

␡

MacBook Pro, OS X Yosemite (10.10.2), RAM 8 GB 667 MHz Apogee Duet Posted on Feb 16, 2015 11:52 AM Reply I have this question too ( 13 ) I have this question too Me too (13) Me too. Update: Thomas Willing discovered that, when running Mac OS 9.1, Mac OS 9 aliases simply say 'Alias' in the Get Info window, while symbolic links say 'Mac OS X Alias.' You create aliases in Aqua.

1. Shell Aliases

This chapter is from the book 

Top 10 Best Email Clients for Mac OS X Written by MacHighway Team on April 2, 2019. In 2018, there were 3.8 billion global email users. On average 281 billion emails were sent and received every single day in 2018. This behavior is convenient for the alias, but it means aliases use a different linking approach than a standard symbolic link, and therefore will prevent the OS X terminal from following it through.

Shell Aliases

Shell aliases are shortcut names for commands. Each alias consists of one word (or even one letter) that you can use instead of a longer command line. For example, you may find yourself using the command ls -F a lot. You can easily make a shortcut for that command: lf, for example. So when you use lf where the shell expects a command, then the shell will substitute ls -F.

To see all your current aliases:

• alias

  The alias command with no arguments displays all your current aliases. The first item on each line is the alias (which must always be a single string, with no spaces), and the rest of the line is the full command for which the alias is a shortcut. Figure 7.9 shows the default aliases for the tcsh shell. You can see that the alias l is a shortcut for the command ls -lg. The first word on each line is the name of the alias; the rest of the line is what gets executed when the alias is used.

  Several of the aliases are more complicated. The aliases in Figure 7.9 are for the tcsh shell, and several of them make use of specific advanced features of that shell (see man tcsh for all of the available features). For example, the alias in Figure 7.9 called line expects two arguments (indicated by !:1 and !:2), while the alias called ll takes all of its arguments (indicated by !*) and inserts them into the middle of a command line.

  Figure 7.9 Using the alias command to see all currently set aliases. Shown are the default aliases for the tcsh shell.

You can create aliases at the command line or by adding them to a configuration file.

Alias For Mac Os X 10.10

Aliases created at the command line are only in effect for as long as you use that shell—that is, they disappear when you close that Terminal window. If you want an alias to always be available, you must put it in a con-figuration file.

To create an alias in tcsh or csh:

1. alias lf 'ls -F'

   This will create an alias called lf, which the shell will translate into ls -F whenever you use lf as a command. Make sure to enclose the last argument in quotes, either single or double, so that everything after the alias name is treated as a single entity.

   Check to see that the alias is set:

   The line

   should be included in your aliases now.

   Tips

   • If you want to have an alias use arguments from the command line inside the alias definition, you can use !:1 for the first argument, !:2 for the second, and so on. But you must escape the ! in the alias definition. So to define an alias called myword that takes its first argument and searches for it inside the file ~/mydictionary, you would use

   • You could use that alias in this way:

     as a shortcut for

To create an alias in tcsh (or csh) that is set every time you start a shell:

1. Open your ~/.tcshrc file (for the csh shell use ~/.cshrc).

2. Add a line with the alias

3. Save the file.

4. Quit the editor. Iso magic for mac.

   The new alias will be set for the next shell you start.

5. Open a new Terminal window to check that the alias is set:

   You should see your new alias in the resulting list.

   TIP

   The gold standard of macOS file transfer apps just drove into the future. Transmit 5 is here. Upload, download, and manage files on tons of servers with an easy, familiar, and powerful UI. It’s quite good. Introducing Transmit 5 for macOS - YouTube. Transmit app for mac. Transmit for Mac is a full service FTP client for the OS X platform. Transmit looks great, is easy to use, and should be a welcome program for anyone who has had difficulties transferring files via.

   A set of example aliases for the tcsh shell are contained in the file /usr/share/tcsh/examples/aliases.

To create an alias in bash:

1. alias lf='ls -F'

   Note that there are no spaces before or after the equal sign.

2. alias

   The shell shows all your current aliases, including the one you just created. As with the tcsh shell, bash aliases created at the command line will disappear when you exit the shell.

To create an alias in bash that is set every time you start a shell:

1. Open your ~/.bash_profile file.

2. Add a line with the alias—for example, alias lf='ls -F'

3. Save the file.

4. Quit the editor.

   The new alias will be set for the next shell you start.

5. Open a new Terminal window to check that the alias is set:

   You should see your new alias in the list:

Shell functions

Unlike aliases in the tcsh shell, aliases in bash cannot have command-line arguments included in them. However, bash allows you to create shell functions, which can make use of their arguments.

The term shell function applies to series of shell command lines. This is similar to an alias, except that a shell function can be many lines long, and you may use the special variables $1 for the first argument, $2 for the second, and so on.

Shell functions should be defined in your ~/.bash_profile.

To create a shell function in bash:

1. Open your ~/.bash_profile.

   The entire function you will be entering is shown in Figure 7.10. This sample function looks up a word in two different files that make up a dictionary.

   Figure 7.10 Code listing of a bash shell function.

2. Enter the first line of the new function. In this example you are creating a function called 'word':

   The parentheses tell bash that this is a function definition. The bracket ({) marks the beginning of the commands in the function.

3. Enter the body of the function:

   Notice that the function can have more than one line of commands.

   The $1 is a variable that will be replaced with the first argument when you use the function in a command line. (Read the file /usr/share/dict/README for a description of the web2 and web2a files.)

4. Finish the function definition with a }. Double-check that what you entered looks like Figure 7.10.

5. Save the file.

6. Quit the editor.

   The new function will be in effect with the next Terminal window you open.

7. Open a new Terminal window.

8. Test the function by trying it on the command line. If you are using the example function from Figure 7.10, then the first argument you supply is used in the function. The function searches two different files for its first argument.

9. word auspic

   You should get the output shown in Figure 7.11. Your new shell function, word, takes its first argument (the $1 in the function) and searches for it in the two files. The function is really a short shell script (see Chapter 9, 'Creating and Using Scripts') but is part of your personal shell configuration.

   Figure 7.11 Using the new shell function to look up 'auspic' in the dictionary.

   
   

Related Resources

• Book $31.99

• eBook (Watermarked) $25.59

• eBook (Watermarked) $38.39

Home > Articles > Apple > Operating Systems

␡

1. Shell Aliases

This chapter is from the book 

Shell Aliases

Shell aliases are shortcut names for commands. Each alias consists of one word (or even one letter) that you can use instead of a longer command line. For example, you may find yourself using the command ls -F a lot. You can easily make a shortcut for that command: lf, for example. So when you use lf where the shell expects a command, then the shell will substitute ls -F.

To see all your current aliases:

• alias

  The alias command with no arguments displays all your current aliases. The first item on each line is the alias (which must always be a single string, with no spaces), and the rest of the line is the full command for which the alias is a shortcut. Figure 7.9 shows the default aliases for the tcsh shell. You can see that the alias l is a shortcut for the command ls -lg. The first word on each line is the name of the alias; the rest of the line is what gets executed when the alias is used.

  Several of the aliases are more complicated. The aliases in Figure 7.9 are for the tcsh shell, and several of them make use of specific advanced features of that shell (see man tcsh for all of the available features). For example, the alias in Figure 7.9 called line expects two arguments (indicated by !:1 and !:2), while the alias called ll takes all of its arguments (indicated by !*) and inserts them into the middle of a command line.

  Figure 7.9 Using the alias command to see all currently set aliases. Shown are the default aliases for the tcsh shell.

You can create aliases at the command line or by adding them to a configuration file.

Mac users interested in 32 bit firefox 47.1 generally download: Firefox 80.0 Free Firefox is one of the most popular web browsers on the market, providing numerous helpful features and quick speed to millions of users worldwide. Download Mozilla Firefox for Mac free. Mozilla Firefox is a fast, full-featured Web browser. Firefox 47 for mac download. Download Mozilla Firefox, a free Web browser. Firefox is created by a global non-profit dedicated to putting individuals in control online. Get Firefox for Windows, macOS, Linux, Android and iOS today! Download Firefox 47.0.1 for Mac from FileHorse. 100% Safe and Secure One of the World`s Most Popular Web Browsers for Mac.

Aliases created at the command line are only in effect for as long as you use that shell—that is, they disappear when you close that Terminal window. If you want an alias to always be available, you must put it in a con-figuration file.

To create an alias in tcsh or csh:

1. alias lf 'ls -F'

   This will create an alias called lf, which the shell will translate into ls -F whenever you use lf as a command. Make sure to enclose the last argument in quotes, either single or double, so that everything after the alias name is treated as a single entity.

   Check to see that the alias is set:

   The line

   should be included in your aliases now.

   Tips

   • If you want to have an alias use arguments from the command line inside the alias definition, you can use !:1 for the first argument, !:2 for the second, and so on. But you must escape the ! in the alias definition. So to define an alias called myword that takes its first argument and searches for it inside the file ~/mydictionary, you would use

   • You could use that alias in this way:

     as a shortcut for

To create an alias in tcsh (or csh) that is set every time you start a shell:

1. Open your ~/.tcshrc file (for the csh shell use ~/.cshrc).

2. Add a line with the alias

3. Save the file.

4. Quit the editor.

   The new alias will be set for the next shell you start.

5. Open a new Terminal window to check that the alias is set:

   You should see your new alias in the resulting list.

   TIP

   A set of example aliases for the tcsh shell are contained in the file /usr/share/tcsh/examples/aliases.

To create an alias in bash:

1. alias lf='ls -F'

   Note that there are no spaces before or after the equal sign.

2. alias

   The shell shows all your current aliases, including the one you just created. As with the tcsh shell, bash aliases created at the command line will disappear when you exit the shell.

To create an alias in bash that is set every time you start a shell:

1. Open your ~/.bash_profile file.

2. Add a line with the alias—for example, alias lf='ls -F'

3. Save the file.

4. Quit the editor.

   The new alias will be set for the next shell you start.

5. Open a new Terminal window to check that the alias is set:

   You should see your new alias in the list:

Shell functions

Unlike aliases in the tcsh shell, aliases in bash cannot have command-line arguments included in them. However, bash allows you to create shell functions, which can make use of their arguments.

The term shell function applies to series of shell command lines. This is similar to an alias, except that a shell function can be many lines long, and you may use the special variables $1 for the first argument, $2 for the second, and so on.

Shell functions should be defined in your ~/.bash_profile.

To create a shell function in bash:

1. Open your ~/.bash_profile.

   The entire function you will be entering is shown in Figure 7.10. This sample function looks up a word in two different files that make up a dictionary.

   Figure 7.10 Code listing of a bash shell function.

2. Enter the first line of the new function. In this example you are creating a function called 'word':

   The parentheses tell bash that this is a function definition. The bracket ({) marks the beginning of the commands in the function.

3. Enter the body of the function:

   Notice that the function can have more than one line of commands.

   The $1 is a variable that will be replaced with the first argument when you use the function in a command line. (Read the file /usr/share/dict/README for a description of the web2 and web2a files.)

4. Finish the function definition with a }. Double-check that what you entered looks like Figure 7.10.

5. Save the file.

6. Quit the editor.

   The new function will be in effect with the next Terminal window you open.

7. Open a new Terminal window.

8. Test the function by trying it on the command line. If you are using the example function from Figure 7.10, then the first argument you supply is used in the function. The function searches two different files for its first argument.

9. word auspic

   You should get the output shown in Figure 7.11. Your new shell function, word, takes its first argument (the $1 in the function) and searches for it in the two files. The function is really a short shell script (see Chapter 9, 'Creating and Using Scripts') but is part of your personal shell configuration.

   Figure 7.11 Using the new shell function to look up 'auspic' in the dictionary.

   
   

Alias Mac Os X

Related Resources

• Book $31.99

Alias For Mac Os X 10.8

• eBook (Watermarked) $25.59

• eBook (Watermarked) $38.39