General :: Write A Literal Bash Command In A Bash File?

Nov 29, 2010

I create a bash script that writes another bash file. But in the generated bash file I want to write a bash command in the file and not executing it.Here's my bash file:

Code:
#!/bin/bash
cat > ~/generateGridmix2data.sh << END

[code]...

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General :: Write A Bash Script To Parse A Text File?

Apr 27, 2011

I want to write a bash script to parse a text file with the following lines and set variables for each line so that I can use them in the rest of the script.

Timestamp=123456789
Company=ABC Company
Server=Server
Recipient=Joe Smith
Email=joe@abc.com

simplest way to read each line one at a time for everything before the =, set that to a variable name with the value equal to everything after the =

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General :: Write A Bash Script That Will Read The Word From The Text File?

Jun 10, 2011

I have a text file that contains a single word and I want to write a bash script that will read the word from the text file... The following is my incorrect attempt, as it assigns the name of the textfile to the variable as opposed to the word stored within the textfile:(assume I have a text file value.txt that has its contents a single word, say wordone)

Code:
#!/bin/sh
for f in value.txt
do
echo $f
done

so the output of the above script is value.txt, however I want it to be wordone.to summarise: how do I assign the value of the word contained within a textfile to a variable?

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Software :: Bash Command History Log / How To Write It Continuous?

Apr 14, 2011

I've been looking for how to set this up in bash with no luck so far. I can change what file the history log is written to, and how much history is saved. But it only writes the saved part when bash exits. Instead, I'd like to have bash write that file continuously as each command is entered (and maybe also do an fsync(2) to flush it to disk). That way I can see the command I crashed the box with Anyone know the magical incantation for that?

But there appears to be nothing that I can find there, in the man page, or other searches, that suggest it even can do continuous.

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Programming :: Write A Bash Script That Will Launch A Command?

May 15, 2011

I want to write a bash script that will launch a command when ever I plug my phone in. how would I monitor the port in a script.

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General :: Pass A File That Changes Name To Another Command In Bash?

Jun 9, 2011

I frequently use wget to download tarballs and zip files from the web, then either untar then or gunzip them. I do:

Is there a way for me to automatically pass the zip file to tar or unzip WHILE wget-ting?

In pseudocode: wget google.com/somfile.zip && unzip

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General :: Run Command Through Ssh But Also Run A If Check In Bash To See Ifa File Exist?

Aug 1, 2011

So I want to run command through ssh but also run a if check in bash to see ifa file exist. I know that to run ssh commands you do ssh user@server YOURCOMMANDbut if i need to run an if statements, how would this work??

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Programming :: Write A Bash Script Program In System Command Terminal?

Mar 22, 2010

I'm trying to write a bash script program in the Linux command terminal that will write to a fellow user and then continue reading down the program. this is what i have (kind of explains the idea too):

#!/bin/sh

clear
echo "this is before the write command"
write jcummins
this message should go to jerry
echo "the message didn't send and this string will not appear"
echo "it appears it has stopped at the write command"

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General :: Cd Command Not Working In .cshrc File (bash Shell SUSE)?

May 29, 2011

Just trying to execute cd command in a .cshrc file (bash shell in SUSE Linux) it says."No such file or directory".Do you see any reasons for this

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Software :: How To Write Bash Script To Locate File

Aug 5, 2011

I mean codes on how to write a bash script for locate file. E.g: This utility shows you all files and directories that have a specific substring in the name. Press '?' for help, 'q' for quit or enter your search terms:

Kuala bin
I have searched for two terms for you,
Kuala, which has three hits:
/usr/share/zoneinfo/Asia/Kuala_Lumpur
/usr/share/zoneinfo/posix/Asia/Kuala_Lumpur
/usr/share/zoneinfo/right/Asia/Kuala_Lumpur bin, which has 2312 hits.
Are you sure you want to see all of those? [Y/n] n
Press '?' for help, 'q' for quit or enter your search terms:
Sorry, you didn't enter any search term.
Press '?' for help, 'q' for quit or enter your search terms: q

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Ubuntu :: Terminal Bash / -bash: Ls: Command Not Found

Jun 5, 2011

I got a problem with terminal, since i'm really a noob with terminal i don't know how to fix it.Everytime i type in a command it shows for example:

-bash: ls: command not found

Even the basic commands don't work... just cd <directory> and those things works

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Programming :: Bash Checking For File Write Completion Before Acting?

Jan 20, 2011

I have a bash script that checks for contents in a folder every 15 seconds and then acts on it's contents. This works great for the average size file however on very large files it starts acting on the file before it's completely written. Is there a facility in bash shell to get a file complete signal or such? here is trigger to launch a larger script.

Code:

#!/bin/sh
while true
do
$HOME/bin/hpgl.sh >/dev/null 2>&1 &

[code].....

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Programming :: Simple Bash To Write Files By Year To A Log File

Jan 31, 2011

I have a folder of 2 many files that the old ls just hangs.

I am trying to write some log files such as;

I don't mind doing one at a time, but I am just playing and even getting the listing I am not getting the date stamp, I have the following;

That does create the file, but all the files look like this;

So basically it's just sticking that ls inside the log file and not actually running the ls, so how can I use the above type to get files just created per year?

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Programming :: Write An If Statement For The First Line Of A Text File Bash?

Feb 15, 2011

At the moment I got my md5sum checking working which I write to a text file and see below.

If the md5sum works it will write the output to check2.md5 test.txt: OK

If the md5sum fails it will write test.txt: FAILED

How do I write if statement to check the output whether or not the md5sum failed or not ?

check1="/home/ops/Desktop/test1/check1.md5"
check2="/home/ops/Desktop/test1/check2.md5"
cd /home/ops/Desktop/test1
md5sum test.txt > $check1

[Code]....

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Fedora :: Write A Bash Script That Will Create A New Text File?

Oct 22, 2009

trying to learn how to write a bash script that will create a new text file named jimbola in my home directory. The file will need to be able to have the first and last name of Jim Bola included in it.

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Programming :: Write A Bash Script That Sources Another Bash Script?

Jan 29, 2011

I am trying to write a bash script that sources another bash script. Essentially, I need a few lines to check to see if a certain variable is set. If not, I set it manually, and then source a scripts with that variable in the path. I wrote a test script to try it, but for some reason the last line does not work. Here is what I wrote:

#!/bin/sh
source ~setupdir/setup.shrc #just a test, this line works
echo ${#SETUP} # prints 0 if setup is not set, which it isn't
if [ ${#SETUP} -eq 0 ]
then
SETUP="~setupdir"
fi
echo $SETUP # prints ~setupdir

[Code]...

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General :: Write A Bash Script Using An If...Then...Else Statement?

May 14, 2010

I need to to write a bash script using an If...Then...Else statement that will accept a day of the week from the command line what do I do or where do I go.

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General :: Write Either PYTHON Or Bash Shell Scripting?

Jun 4, 2010

I do not know how to write either PYTHON or Bash Shell Scripting. I am to learn one for Linux Administration purpose. Which one will you recommend for a Linux Admin/Eng environment?

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Security :: Write Secure Code For Bash Scripts In General?

Feb 9, 2010

how to write secure code for bash scripts in general? Strangely I didn't found anything in google and in the forum so far. If someone here is willing to review a bash script for me (about 600 lines).

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General :: Write Bash Script To Mimic Right Button Click?

Jul 9, 2010

how do i write a bash script to mimic my right button click any ideas or command names to steer in the right direction would be great.

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General :: Write A Bash Script That Gets The List Of Files In A Directory?

Apr 5, 2010

I'm trying to write a bash script that gets the list of files in a directory and puts them into a variable, then checks each entry and outputs them as follows:

item1 is a FILE
item2 is a DIR
item3 is a DIR
etc etc.

I am able to get the list of files into a variable, but unsure how to get the output I want.

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Programming :: Bash Command Redirecting Output To File?

Nov 7, 2007

I am trying to do something 'simple'I have a bash program that gives output in the commad prompt eg.Code:00 12 03 C2 EE ...I want to grep a line containing value 'C2' and put the line into a file.I tried:Code:$./serial 1 | grep C2 > databut it doesn't work. I don't get any errors but there is no data in the file. BTW, serial is the program that monitors serial port 1 and spits it out on the command.

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Ubuntu :: Chroot - Cannot Run Command '/bin/bash' - No Such File Or Directory

Jul 1, 2011

I have booted up into Ubuntu 10.04 LTS disc live.

When I type 'chroot /media/(UUID)', I get:

chroot: cannot run command '/bin/bash': no such file or directory.

'/bin/bash' does exist.

Why is this error occurring?

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Ubuntu :: Bash Command To Find And Replace Text In File

Apr 3, 2010

I'm having problems with Tomboy. I have a few hundred note files and I need to go through all of them and replace all instances of "<link:broken>a</link:broken>" with "a". Is there a bash command I can use to do this?

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Ubuntu :: Chroot Not Working: Cannot Run Command `/bin/bash': No Such File Or Directory

Mar 20, 2010

I'm trying to change the root directory to /tmp/somedir using chroot, but even using sudo or su-ing to root I get the message:

Code:

cannot run command `/bin/bash': No such file or directory

I tried copying /bin/bash to /tmp/somedir/, but the same error occurs. What's wrong with my chroot?

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General :: Write A Bash Script To Restore Deleted Files To Original Location?

Dec 5, 2010

I have managed to write a bash script that moves files to the recylce bin instead of being deleted. Then (with a bit of assistance) wrote another bash script that deletes the files from the recycle bin. Now I need to write one that will restore the files preferably to their original location? I am very new to linux and stuggling with where to even begin...any ideas? There seems to be some advice about creating a cloning tree, but I've never heard of them?

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General :: System Administration Scripting - Write Very Basic BASH Shell Scripts

Jan 10, 2011

I'd like to know some good resources, links, e-books to learn basic Linux system administration scripting. I know how to write very basic BASH shell scripts so I'm still at beginner level. There are so many docs out there that I'd like to narrow down people's opinion's on the best easy to understand resources that are available. Eventually I'd like to learn basic PERL as well.

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Programming :: Bash Ambiguous Redirect - Redirect One Command Output Which Will Be Treat As A Content Of File For Another Command?

Mar 9, 2011

I am trying to grep multiple numbers from file, grep does have the -f option for that.

Code: grep -f <`seq 500 520` /etc/passwd I know this could be done with

Code: for i in `seq 500 520`; do grep "$i" /etc/passwd; done But my question is fare more behind this example. It is possible to redirect one command output which will be treat as a content of file for another command ?

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General :: Running Bash But Common Bash Commands Not Working?

Jul 17, 2010

below are the details of my system. I have bash as my current shell, some really common commands aren't working.

Do I need to do a re-installation of bash? Or how do I install a selection of bash commands which I need? (for example a subset of [URL])

Code:
root@sdptfw:~ # uname -a
Linux sdptfw.sdpt.co.za 2.4.36 #1 Tue Jul 22 13:13:24 GMT 2008 i686 i686 i386 GNU/Linux
root@sdptfw:~ # echo $SHELL$
/bin/bash$

[Code]....

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General :: Bash Command History Update Before Execution Of Command

Jun 7, 2010

Bash's command history is great, especially it is useful when adding the history -a command to the COMMAND_PROMPT.However, I'm wondering if there is a way to log the commands to a file as soon as the Return key is pressed, e.g. before starting the command and not on completion of the command (using the COMMAND_PROMPT option would save the command once the prompt is there again).

I read about auditing programs like snoopy and session recorder like script but I thought they're already too complex for the simple question I have. I guess that deactivating that script logs all the output of the command would lead already in the right direction but isn't there a quicker way to solve that probelm?

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Programming :: Find And Replace A String In A File Using Perl Command From Bash Script?

Feb 14, 2011

I wanted to find and replace a string from a perl file. I have written a script in bash which runs the following command.

perl -pi -e "s/$findstring/$replacestring/" testfile
where as $findstring = print F_WC_TMP"$line
";
and $replaceString = $line = join ' ', split ' ', $line; print F_WC_TMP"$line
";

But when I am running the above command, i think it is replacing the $findstring with the above mentioned string and hence it contains a $line, it is looking for the variable $line and not finding the exact string. I am confused about how to search for a string that contains $ in it and replace it with another $string.

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General :: Command To Delete Bash Command History?

May 31, 2010

What's the command to delete bash command history?

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General :: What Does This Cryptic Bash Command Mean - Why Command Crashes

Mar 20, 2011

Possible Duplicate: What does this cryptic bash command mean? Why this command crashes Linux? :(){ :|:& };:

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General :: To Undo A Given Bash-command?

Mar 18, 2004

Is there a common command to undo a bash-command. I know this question is crazy but you never know in Linux.I just run ?chmod a+rx /dev/ptal-printd /var/run/ptal-*? and want that command undone because my printer doesn`t work anymore. I had a look in the man-page for chmod and think the right command could be ?chmod a-rx /dev/ptal-printd /var/run/ptal-*? but I?m not sure, or are there any other command like ?undo chmod a+rx /dev/ptal-printd /var/run/ptal-*?

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General :: Bash Command Not Found

Oct 26, 2005

I'm having a very weird problem. whatever command I type I keep getting "bash: ls: command not found". That go for all the command Except for the "pwd" and "echo" no idea why its doing that?By the way its a "SunOS" I don't have choice in the matter, as its a University Server and I have to use it to do my work.

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