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Shell Programming and Scripting

using awk to drive an internal function

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Top Forums Shell Programming and Scripting using awk to drive an internal function
# 8  
Old 09-23-2005
Once again a boxcar load of gratitude....

and proof of an old unix adage: 'If you spend more than an hour trying to be clever in unix, take the 5 minute 'dumb' solution'

about half an hour before you posted I changed the script to read:

cat somefilename | while read....... etc etc

oh well, it was only time I spent and not gasoline....
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LEARN ABOUT DEBIAN

script

SCRIPT(1)							   User Commands							 SCRIPT(1)

NAME

     script -- make typescript of terminal session

SYNOPSIS

     script [-a] [-c command] [-e] [-f] [-q] [-t[=file]] [-V] [-h] [file]

DESCRIPTION

     script makes a typescript of everything printed on your terminal.	It is useful for students who need a hardcopy record of an interactive
     session as proof of an assignment, as the typescript file can be printed out later with lpr(1).

     If the argument file is given, script saves all dialogue in file.	If no file name is given, the typescript is saved in the file typescript.

     Options:

     -a, --append
	     Append the output to file or typescript, retaining the prior contents.

     -c, --command command
	     Run the command rather than an interactive shell.	This makes it easy for a script to capture the output of a program that behaves
	     differently when its stdout is not a tty.

     -e, --return
	     Return the exit code of the child process.  Uses the same format as bash termination on signal termination exit code is 128+n.

     -f, --flush
	     Flush output after each write.  This is nice for telecooperation: one person does `mkfifo foo; script -f foo', and another can super-
	     vise real-time what is being done using `cat foo'.

     --force
	     Allow the default output destination, i.e. the typescript file, to be a hard or symbolic link.  The command will follow a symbolic
	     link.

     -q, --quiet
	     Be quiet.

     -t, --timing[=file]
	     Output timing data to standard error, or to file when given.  This data contains two fields, separated by a space.  The first field
	     indicates how much time elapsed since the previous output.  The second field indicates how many characters were output this time.
	     This information can be used to replay typescripts with realistic typing and output delays.

     -V, --version
	     Output version information and exit.

     -h, --help
	     Output help and exit.

     The script ends when the forked shell exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is not
     set) for the C-shell, csh(1)).

     Certain interactive commands, such as vi(1), create garbage in the typescript file.  Script works best with commands that do not manipulate
     the screen, the results are meant to emulate a hardcopy terminal.

ENVIRONMENT

     The following environment variable is utilized by script:

     SHELL  If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most
	    shells set this variable automatically).

SEE ALSO

     csh(1) (for the history mechanism), scriptreplay(1).

HISTORY

     The script command appeared in 3.0BSD.

BUGS

     Script places everything in the log file, including linefeeds and backspaces.  This is not what the naive user expects.

AVAILABILITY

     The script command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

util-linux							 February 2011								util-linux