Delete blank spaces and blank lines in a file Post: 302934734

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LEARN ABOUT BSD

uname

UNAME(1)						      General Commands Manual							  UNAME(1)

NAME

       uname - display information about the system

SYNOPSIS

       uname [-amnrsv]

DESCRIPTION

       The  uname  command  writes the name of the operating system implementation to standard output.	When options are specified, strings repre-
       senting one or more system characteristics are written to standard output.

       The options are as follows:

       -a	 Behave as though the options -m, -n, -r , -s, and -v were specified.

       -m	 Write the type of the current hardware platform to standard output.

       -n	 Write the name of the system to standard output.

       -r	 Write the current release level of the operating system to standard output.

       -s	 Write the name of the operating system implementation to standard output.

       -v	 Write the version level of this release of the operating system to standard output.

       If the -a flag is specified, or multiple flags are specified, all output is written on a single line, separated by spaces.

       The uname utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

       sysctl(8), sysctl(3), uname(3)

HISTORY

       The uname command appeared in 4.4BSD.

STANDARDS

       The command is expected to conform to the IEEE Std1003.2 (``POSIX'') specification.

4th Berkeley Distribution					 February 4, 1995							  UNAME(1)

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delete blank lines or lines with spaces only

Discussion started by: vascobrito

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Discussion started by: TL56

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delete blank lines from a file

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