What is read bash?

read is a bash built-in command that reads a line from the standard input (or from the file descriptor) and split the line into words. The first word is assigned to the first name, the second one to the second name, and so on. read and echo are enclosed in parentheses and executed in the same subshell.

What is man bash?

Description. Bash is an sh-compatible command language interpreter that executes commands read from the standard input or from a file. Bash also incorporates useful features from the Korn and C shells (ksh and csh).

How do I read a character in bash?

2 Answers. Though you could use IFS= read -d ” -rn1 instead or even better IFS= read -N1 (added in 4.1, copied from ksh93 (added in o )) which is the command to read one character. Note that bash’s read can’t cope with NUL characters. And ksh93 has the same issues as bash.

What is read Linux?

read command in Linux system is used to read from a file descriptor. Basically, this command read up the total number of bytes from the specified file descriptor into the buffer. If the number or count is zero then this command may detect the errors. But on success, it returns the number of bytes read.

What is the READ command in Bash shell?

read is a builtin command of the Bash shell, which reads a line of text from standard input and splits it into words. These words can then be used as the input for other commands.

How to read from a Linux man page?

read(2): read from file descriptor – Linux man page read() attempts to read up to count bytes from file descriptor fd into the buffer starting at buf. read(2) – Linux man page Name read – read from a file descriptor Synopsis #include ssize_t read(int fd, void *buf, size_t count); Description

What is the meaning of read-R in Bash?

The -r option prevents backslash escapes from being interpreted. Here’s an example: The Bash man page’s section about read states that, by default… The backslash character () may be used to remove any special meaning for the next character read and > for line continuation. Backslash does not act as an escape character.

Which is the default way to read a line in Bash?

These words can then be used as the input for other commands. read reads a single line from standard input, or from the file descriptor fd if the -u option is used (see -u, below). By default, read considers a newline character as the end of a line, but this can be changed using the -d option.

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