[bash] why my variable is not updated? Post: 303032931

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

passing variable from bash to perl from bash script

Hi All, I need to pass a variable to perl script from bash script, where in perl i am using if condition. Here is the cmd what i am using in perl FROM_DATE="06/05/2008" TO_DATE="07/05/2008" "perl -ne ' print if ( $_ >="$FROM_DATE" && $_ <= "$TO_DATE" ) ' filename" filename has...

2. Shell Programming and Scripting

bash and ksh: variable lost in loop in bash?

Hi, I use AIX (ksh) and Linux (bash) servers. I'm trying to do scripts to will run in both ksh and bash, and most of the time it works. But this time I don't get it in bash (I'm more familar in ksh). The goal of my script if to read a "config file" (like "ini" file), and make various report....

3. Shell Programming and Scripting

Using the value of one variable to name another variable (in bash)

Hello all, I'm working on a script, and as part of it, I'm trying to create a loop that will run through a stored piece of information a certain number of times pulling out information, and each time create a variable with a unique name that will store that information. I'm sure it's a simple...

4. Shell Programming and Scripting

[Bash]variable does not keep its value

Hello all, I have this shell script, but do not understand why the variables inside the if block does not keep its value outside. Is it because of the pipe ? How can i fix this problem ? Thank you for helping. local alarm="" local num_alarm=0 local -a alarms ...

5. Shell Programming and Scripting

bash - Variable made of variable

Hello, I am struggling with using variable made using "eval". a=4 eval b$a=20 echo $b$a ??? As shown above, I am trying to call back the variable "bX" assuming I do not know the value of "a". How can I do that? I tried several combinations but nothing worked. Thanks

6. Programming

pthread question : global variable not updated

Hi, I wrote the following program to understand mutexes. If I run the program , number of threads is shown as zero, even after creating one thread. When running with gdb, it works fine. The function process is used to update global variable (used to keep track of threads). It looks like the...

7. Shell Programming and Scripting

Use variable in bash

$ p="1 2 5 8" $ set -- $p $ echo $3 5 $ k=3 $ echo \$${k} $3 I want the "echo \$${k}" to get the output 5 , how to modify ?

8. Shell Programming and Scripting

Variable in bash help

#aa=xxxx #zz="cc $aa" #aa=gggg #echo $zz out put is cc xxxx if I want to get cc gggg how should I do, I don't want to write zz="c $aa " after aa=gggg

9. Shell Programming and Scripting

Bash variable within variable

Hello, Can I ask how to expand variable that contains another in bash? I need to loop variable within another one like this: RD1=testgrp RD2=testgroup RD3=testgroupfile RD4=tstgroup ... RD40=try2013 DEST=/home/king/finaldir for i in {1..40}; do mv ${RD${i}} ${DEST} done I do not...

10. UNIX for Beginners Questions & Answers

Variable gets auto updated after function execution

Hi Team In the below code, irrespective of the if statement that gets executed, retcd is being assigned a standard value(1) instead of changing as per code. Could you please help to see where is it going wrong. rval=0 CONF_FILE=/apps/wmroot/scripts/props/UMPath.properties NOHUP="nohup"...

LEARN ABOUT CENTOS

set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

       Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
       font color, while set_color --bold white will result in a white font color.

       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
       incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
       ncurses and recompile fish against it in order to fix this issue.

Version 1.23.1							  Sun Jan 8 2012						      set_color(1)