06-29-2011
It is possible to test before you touch. Personally, I turn it off and write scripts where unset and "" are equivalent. It makes for more code and more ways to fail, more costly than can be offset by any speed it adds to debugging!
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hey champs,
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I'm not talking about the assembly instruction TAS, a better name could be check-and-set :) Anyway, is there a way to simplify the following
if ; then VAR="something"; fi
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Hi folks,
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In my Bash script I have an exit/cleanup function in a trap statement like:
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6. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
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Unix box: solaris 5.8
Server: IP
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Hello.
In bash, is there a way to trap error "file not found" when a script call another script which is not found; then abort.
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+ return 0
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+ ]
+ /root/bin/200_yast_install/00_reset_yast_install
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Hi,
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Could somebody please provide me with verbatim description / purpose of the following ?
set dummy $ac_prog; ac_word=$2
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could it be written
set dummy $ac_prog;
ac_word=$2
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LEARN ABOUT HPUX
cfgetospeed
cfspeed(3C) cfspeed(3C)
NAME
cfgetospeed(), cfsetospeed(), cfgetispeed(), cfsetispeed() - tty baud rate functions
SYNOPSIS
DESCRIPTION
These functions set and get the input and output speed codes in the termios structure referenced by termios_p. The termios structure con-
tains these speed codes representing input and output baud rates as well as other terminal related parameters. Setting the parameters on a
terminal file does not become effective until is successfully called.
returns the output speed code from the
termios structure referenced by termios_p.
sets the output speed code in the
termios structure referenced by termios_p to speed. The speed code for a baud rate of zero, is used to termi-
nate the connection. If is specified, the modem control lines are no longer asserted, which normally discon-
nects the line.
returns the input speed code from the
termios structure referenced by termios_p.
sets the input speed code in the
termios structure referenced by termios_p to speed.
RETURN VALUE
returns the output speed code from the termios structure referenced by termios_p.
returns the input speed code from the termios structure referenced by termios_p.
and return zero upon successful completion. Otherwise, they return -1 and set to indicate the error.
ERRORS
and fail when the following condition is encountered:
[EINVAL] The value of speed is outside the range of possible speed codes as specified in
WARNINGS
and can be used to set speed codes in the termios structure that are not supported by the terminal hardware.
SEE ALSO
tcattribute(3C), thread_safety(5), termio(7).
STANDARDS CONFORMANCE
cfspeed(3C)