UNIX Shells by Example (4th Edition)
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r command 2nd rand function random number generator ranges awk lines and sed patterns range operators rcp utility read command Bash file descriptors user input Bourne shell Korn shell file descriptors user input streams 2nd while loop readers reading input sed user input 2nd 3rd 4th records awk multiline separator awk redirection 2nd awk Bash Bourne shell C shell child shell exec command Bash Bourne shell Korn shell I/O redirection Bash Bourne shell Korn shell input Korn shell operators Bourne shell C shell Korn shell output output and error when set up regular expressions 2nd 3rd [See also metacharacters, pattern matching] awk 2nd basic GNU grep case sensitivity defined egrep examples 2nd example 2nd 3rd extended GNU grep GNU basic grep 2nd GNU extended egrep 2nd GNU grep GNU grep metacharacters grep command 2nd examples matching on an entire line metacharacters POSIX sed rehash command relational operators awk 2nd 3rd Bash Bourne shell common errors Korn shell repeat command C shell 2nd reports awk 2nd resetting signals Bash Bourne shell Korn shell restricted scripts Korn shell return function Bash return values function arguments and function arguments, Bash local variables rgrep defined example features how it works rgrep utility rlogin utility rm utility rmail utility rmdir utility roles su command superuser root running scripts as scripts that run as UID rsh utility run level runtime errors, debugging ruptime utility rusers command rw-rw-rw- permissions rwho utility rwxrwxrwx permissions
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