|
|
|
|
UGU: Unix Guru Universe - Unix Tip #4045- March 9, 2012
- Home : Help
: Today's Tip
Unix Tip #4045- March 9, 2012
BOURNE SHELL PSEUDO HASH TABLES
The best way to explain this
is with an example:
You may want to write a simple
script that launches an xterm
window with different color
options. Pseudo hash tables in
bourne shell.
$ xwindow MidnightBlue
An easy way to this is by first
listing the supported colors in
the script (pseudo hash table):
DarkSlateGrey="#2f4f4f"
DimGrey="#696969"
MidnightBlue="#191970"
NavyBlue="#000080"
Next, simply grab the hex color
code by using the following
command:
BGColor=`eval echo $"$(echo $1)"`
"$(echo $1)" evaluates to "MidnightBlue" and
`eval echo $MidnightBlue evaluates to "#191970".
Simply launch the xterm window
using $BGColor as the background
color:
xterm -bg="$BGColor" &
This method for extracting pseudo hash
values may be used for NIS map files,
file date stamps, GUI colors, etc.
This tip generously supported by: Jasper.Silvis@PHL.Boeing.com
NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted
by various unix admins around the globe. UGU suggest you read and
test each tip in a non-volitile environment before placing into
production.
LAST 5 TIPS
4044
- BE A GURU - RTFM
4043
- ONE STEP AT A TIME WITH !!
4042
- PRINTING WITH NO SPACE
4041
- To grab all hidden files
4040
- SAVE A COPY
I want to
SUBSCRIBE
and get a UGU Tip everyday.
I want to
UNSUBSCRIBE
and NOT get a UGU Tip everyday.
If you have a UNIX TIP let us know, we just may use it:
(All tips become the property of the Unix Guru Universe)
|
|
| |
Copyright 1994-2024 Unix Guru Universe
|
|
|
|
|
Home
