General :: Evaluation Of Postfix String Using Bash Shell
Mar 15, 2011I would like to evaluate a postfix string using bash shell script,but I do not know how to start.
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General :: Substring Of String In Tag + Shell Script?
Feb 4, 2010I have a string variable
var1=<default>111</default>
I want the value between default tags 111 in this case.
I treid to use ${var1:10:3}
But the execution gived "bad substitution' error. If the tags are removed and substring is fetched it works fine. Is there any other was to get substring in a string with tags.
General :: Get Part Of A String In Bash ?
Mar 10, 2011I've a string "this.is.a.name", and I would like to return "is.a.name". How can I do that in bash?
View 3 Replies View RelatedGeneral :: Get The Shortest String In A Text File With Shell?
Apr 29, 2010Assume I have a text file as belowabcdaaaaaaagfgkhahahahahahhahhgfThen gf would be returned
View 4 Replies View RelatedGeneral :: Randomize The Comma Separated String In Shell?
Oct 10, 2010I wanted to randomize the comma separated string.String like "test1,test34,test5,test6".And it would be displayed differently when I ran each time.
Expected output like "test5,test6,test1,test34".
General :: Parse String In Bash Script?
Nov 8, 2009I have to create a bash script that takes an arbitrary length number from the command line, and add up each individual digit
Ex:
server> myscript.sh 123
server> 1 + 2 + 3 = 6
The problem I'm having is pulling out each character.
Is there a way in bash I can parse the input string for each character? I can't figure out a way to do this.
General :: Return Part Of A String In Bash?
Mar 20, 2011I would like to return the last part of a string in an array of strings in bash.
The array contains in each position the content below:
Code:
a.b.c
a.d.f
a
a.d
[Code].....
General :: Split A String Into Array In Bash?
Mar 17, 2011how do I split a string into an array?In this string:"this is a story"how do I split it by the space?
View 8 Replies View RelatedGeneral :: Grep Fails In Shell Script When String Not Found / Why Is So?
May 3, 2011I am having trouble using grep command. I want to search for each line in first file in second file and if they are present, write to file called successfile else to failfile. Below is the code
what is happening is, when the first failure occurs (when a line in first file is not present in second file), the script is killed.
Can anyone please tell me what I am doing wrong? code...
General :: Environmental Variable In Bash Command String?
Feb 9, 2011I do this:
Code:
a@b:~$ export A=hi
a@b:~$ echo $A
hi
a@b:~$ bash -c "export A=blah; echo $A"
hi
a@b:~$
Why doesn't the bash command print the new value of $A? Is there a way to make it do so?
General :: Change Case Of A String (BASH Scripting)?
Jul 9, 2010Is there any inbuilt functionality in Unix shell script so that i can able to convert lower case string input to an upper case? I dont want to use high level languages like java,python or perl for doing the job.
View 4 Replies View RelatedGeneral :: Pull String From A File Into A Variable Using Bash
Aug 6, 2011I have a file (.tmpfile) and inside it is a string which i only know part of, the rest being a random group of characters... I would like to know how to pull the whole string out of the file and into a variable.
View 13 Replies View RelatedGeneral :: Check If Any Of The Parameters To A Bash Script Match A String?
Sep 8, 2010I'm trying to write a script where I want to check if any of the parameters passed to a bash script match a string. The way I have it setup right now is if [ "$3" != "-disCopperBld" -a "$4" != "-disCopperBld" -a "$5" != "-disCopperBld" -a "$6" != "-disCopperBld"]but there might be a large number of parameters, so I was wondering if there is a better way to do this?EDIT:I tried this chunk of code out, and called the script with the option, -disableVenusBld, but it still prints out "Starting build". Am I doing something wrong?
while [ $# -ne 0 ]
do
arg="$1"
[code]....
General :: Bash: Substitute Parameter In A Quoted String - Stored In Another Variable
Jan 31, 2010(variable substitution?)
(parameter expansion?)
Code:
run_repeatedly()
{
NUM=0
while [ <irrelevant stuff here> ]
[Code]....
run_repeatedly "programX -o "./messy/path/output-$NUM.txt"" The echo inside the loop prints "...-$NUM.txt"; obviously I'm aiming to have bash substitute the iteration number so that I end up with many output files not 1.
General :: Split A String Into Array In Bash Return Wrong Size?
Mar 21, 2011I'm trying to split a string, to later iterate using a for loop like
Code:
for (( i=0; i<5; i++))
But, my script returns an array with the size 1.
Here's the script:
Code:
aver=$(grep "avg" A.txt | awk '{ print $2 }');
a=$(echo $aver | tr " " "
");
[Code]....
General :: Can Use Redhat Enterprise After 30 Days Evaluation ?
Jul 5, 2010Actually i want to know if i don't want any support or software update from redhat, can i continue to use RHEL after 30 days evaluation ?
View 3 Replies View RelatedGeneral :: Evaluation Mails To Windows Outlook
Jan 21, 2011i wanna convert my evaluation mails to windows outlook.
View 1 Replies View RelatedGeneral :: Install A Different Flavor To A Second Hard Drive For Evaluation?
Feb 27, 2010I have just moved from Windows Vista to Ubuntu about a week ago. Ubuntu is on my old c:drive...no windows at all. Can I install a different flavor of linux such as Fedora, Mandriva, etc to a separate external hard drive so the I can evaluate different ones?
View 3 Replies View RelatedFedora :: Stuck With Bash Shell / Changing Default Shell To Tcsh?
Mar 14, 2010I want to change my default shell to tcsh. I used
Code:
usermod -s /bin/tcsh username
command as given at url
But if I open a new shell, it is still a bash shell.
How do I make my default shell as tcsh?
General :: How To Use Foreach In Bash Shell
Mar 25, 2010I used c-shell previously in unix. One of the useful command I used frequently is foreach.> foreach a (`cat list`)>> echo $a need to use bash shell now instead, and realized that I can't use foreach anymore. The command is not found. Does anyone knows if there is similar command / function in bash shell?
View 9 Replies View RelatedGeneral :: Use Bash Shell When I Run A Program From It?
May 11, 2011So I open firefox from my bash shell with:
Code:
firefox google.ca
it opens firefox, I can browse, etc.
Now if I alt-tab back into my shell, i can't enter any commands in the shell.
I know that i can do this if I close firefox, but I want to keep working in my shell with firefox still open.
Is this possible?
General :: How To Unlimited Bash/shell History
May 4, 2010Is there a way to define an unlimited history in Bash ?
View 3 Replies View RelatedGeneral :: Get Bash History From Another Shell Instance
Aug 18, 2010Possible Duplicate: Can history files be unified in bash? I have bash running in an ssh session, call this session A. I leave the office, go home, ssh to the same box, call this session B. From session B, I'd like to be able to look at the history of session A.
View 1 Replies View RelatedGeneral :: How To Get Bash Shell History Range
Oct 4, 2010How can I get/filter history entries in a specific range?I have a large history file and frequently usehistory | grep somecommandNow, my memory is pretty bad and I also want to see what else I did around the time I entered the command.For now I do this:get match, say 4992 somecommand, then I do history | grep 49[0-9][0-9]this is usually good enough, but I would much rather do it more precisely, that is see commands from 4972 to 5012, that is 20 commands before and 20 after. I am wondering if there is an easier way? I suspect, a custom script is in order, but perhaps someone else has done something similar before.
View 2 Replies View RelatedGeneral :: How To Minimize Bash Shell Prompt
Oct 26, 2010Currently the terminal prompt looks like this:[karlis@karlis-desktop current_folder]$How can I minimize the prompt, so that it only shows $ or # without extra info in square brackets?I checked the preferences for the default Gnome-Terminal and Terminator - there are no settings for this. It is pretty hard to use terminal when working in directories with long names.
View 1 Replies View RelatedGeneral :: Bash Shell Script With Menu?
Apr 12, 2011I've written a bash shell script (code provided below) that gives the user 4 options. However I'm having a little trouble with the code. Right now when they select option 3, to show the date.It loops over and over again.I have to close the terminal window to stop it because it's an infinite loop. How would I prevent this? Also quit doesn't seem to be working either.
#!/bin/bashe
echo -n "Name please? "
read name
echo "Menu for $name[code]............
General :: Bash - Get ' Quote ` Back-tic Through The Shell Into Sed?
Aug 3, 2011In linux how do I to get the ascii decimal/hex/oct code from a char or a ascii char from a decimal/hex/oct code. I see from the gnu sed user manual that I can use the d# o# x# to specify a character but I am not sure how to use that. If some one has a better way to get the the ` and ' chars through I want to sed with the backtick '`' character and ''' single quote character.
sed '/`/p'
these don't work
sed '/'/p'
sed '/`/p'
General :: Bash Shell Scripting Request?
Feb 27, 2011I am working on a simple script that should take two command line arguments, a [number] and a [name]. The first thing the script should do is check to make sure that no more and no less than two command line arguments have been entered when calling the script - an error message should be delivered if the condition is not true.
If two args have been entered, then the message 'processing "scriptname"' should appear, where scriptname is the name of the script being called. The script should then write to the screen "Hi [name]!", and should write this phrase [number] of times. For example, the command $ myscript 2 joe would produce the output: I have read the manual many times looking for examples, and I am very close by virtue of my own efforts. Further, I have searched these forums and others for good examples, which have also gotten me very close. Still my script is not completing the objective, and I am wondering if someone could point me in the right direction. Script:
[Code]...
General :: How To Handle Character In Bash Shell
Apr 30, 2011i have a script where i need to pass an argument "1234:-)"if i run this as ./shell.sh 1234:-)it wont work because invalid character. i need to handle this with expect utility so if i pass it as ./shell.sh "1234:-)"no issue in bash but expect does not recognize this.
View 7 Replies View RelatedGeneral :: Using Bash Shell Script Inside Php?
Dec 30, 2010how do i use bash shell scripts inside php.I am just trying to call a simple cp command using php. Its not doing anything.
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