This is my first ever post on stackoverflow, hope I don't break any rules. I'm a complete Linux newbie (installed Lubuntu 14.04 64bit last night) so be duly warned.
In short, I'm trying to get my laptop touchpad toggle to work (Fn+F3 on my Inspiron5110). I have a bash script:
#!/bin/bash
if [ $(synclient -l | grep TouchpadOff | awk '{print $3}') == 1 ] ; then
synclient touchpadoff=0;
else
synclient touchpadoff=1;
fi
I got it from http://crunchbang.org/forums/viewtopic.php?id=10996 . If I paste the script code in the terminal and execute it, it works (touchpad goes on/off). However, I want to bind it to a key so in my lubuntu-rc.xml I've added the following:
<!-- disable touchpad -->
<keybind key="XF86TouchpadToggle">
<action name="Execute">
<command>/usr/local/bin/touchpad.sh</command>
</action>
</keybind>
When I press the necessary key combo however I get "Failure to execute child process "/usr/local/bin/touchpad.sh" (No such file or directory)". However I can see in this directory, both in the file manager and when I use ls in the terminal that the file is there:
/usr/local/bin$ ls -l
total 4
-rwxrwxr-x 1 paspaldzhiev paspaldzhiev 145 юни 2 22:54 touchpad.sh
I used chmod +x touchpad.sh to make it executable.
Now, where this gets even more confusing:
If I use bash /usr/local/bin/touchpad.sh I get:
paspaldzhiev#areuexperienced:/usr/local/bin$ bash touchpad.sh
touchpad.sh: line 6: syntax error near unexpected token `fi'
touchpad.sh: line 6: `fi'
Though as I've said above I know for a fact that the code works if I just paste it in the terminal.
Further, if I use ./touchpad.sh I get :
paspaldzhiev#areuexperienced:/usr/local/bin$ ./touchpad.sh
bash: ./touchpad.sh: /bin/bash^M: bad interpreter: No such file or directory
Just to note that I'm not very sure what the difference between bash touchpad.sh and ./touchpad.sh is in terms of execution, it's just that my more Linux-savvy friends told me to try these :D.
In any case, I have no idea how to proceed henceforth, could anyone please shed a light on what I'm doing wrong?
Thank you very much!
The ^M in your last error msg is your big hint ; -). Somehow you have used a windows editor, file transfer or something. Try dos2unix touchpad.sh. It will remove all the CR (^M) chars from end of lines. It should work then. Good luck. – shellter
There is no need for script, since there is no need for if instruction.
Place this piece of code in your lubuntu-rc.xml
<keybind key="XF86TouchpadToggle">
<action name="Execute">
<command>synclient TouchpadOff=$((1-$(synclient | grep TouchpadOff | awk '{print $3}')))</command>
</action>
</keybind>
Related
I have a strange problem that I didn't able to find solution for it:
When I login to my environment it configured to work with tcsh (I want to keep it like that), but when I edit the file ".tcshrc" and put the below code (Only these 2 lines), the text is printed correctly in RED, but after that the "less" command is not working anymore.
When I remove this line, less command works properly.
#!/bin/tcsh
echo "THIS LINE IS OK"
Does someone knows what could be the reason? I'm using less version: (less 436)
I create a text file: "dummy.txt" and write the following text inside: "THIS IS A DUMMY FILE"
CMD: cat dummy.txt
OUTPUT:
THIS IS A DUMMY FILE
CMD: less dummy.txt
OUTPUT:
THIS LINE IS OK
dummy.txt (END)
Only less command is not working, other commands: cat, more, vi are working properly.
Thanks in advance to the once who try to assist.
Ok, I found the issue, it is well explained in the following link:
http://www.greenwoodsoftware.com/less/faq.html#profileout
I have moved my code to ".login" instead.
Thank you for your concern.
I'm a noob trying to bulk-ip-lookup with [geoiplookup -f GeoLiteCity.dat] command.
I have more than 700 ips to lookup which saved on as c.txt (on the same folder)
How can I make a bash shell script? I've already made one and all I got was:
sudo: unable to execute ./ok.sh: No such file or directory
Here is my script
It would be all - ok to use another language.
To make it more clear;
[geoiplookup -f GeoLiteCity.dat IP1]
[geoiplookup -f GeoLiteCity.dat IP2]
...
[geoiplookup -f GeoLiteCity.dat IP700]
and save them as one text file. (Which would be 700 row)
I'm Korean and sorry for my poor English, but I couldn't find any in my language how to do this. I'll really appreciate it, or I have to look up 1 by 1 till Friday... (as internet speed is extremely slow in my company)
Please help me. I will pray for you at every sunday morning. Thank you.
found a very simple answer with a duckduckgo search for 'iterate through each line of file bash'
stackoverflow.com/questions/1521462/looping-through-the-content-of-a-file-in-bash
#!/usr/bin/bash
printf "\n\n"
while read ip; do
echo "LOOKING UP IP $ip"
geoiplookup $ip
printf "\n\n"
done < ipaddresses.txt
save it as iplookup.sh and run, without 'sudo':
bash iplookup.sh
tested and working. be sure to rename your file 'c.txt' to 'ipaddresses.txt' ! also the 'ipaddresses.txt' file must be in the same directory
I have a written a sample script on my Mac
#!/bin/bash
test() {
echo "Example"
}
test
exit 0
and this works fine by displaying Example
When I run this script on a RedHat machine, it says
syntax error near unexpected token '
I checked that bash is available using
cat /etc/shells
which bash shows /bin/bash
Did anyone come across the same issue ?
Thanks in advance !
It could be a file encoding issue.
I have encountered file type encoding issues when working on files between different operating systems and editors - in my case particularly between Linux and Windows systems.
I suggest checking your file's encoding to make sure it is suitable for the target linux environment. I guess an encoding issue is less likely given you are using a MAC than if you had used a Windows text editor, however I think file encoding is still worth considering.
--- EDIT (Add an actual solution as recommended by #Potatoswatter)
To demonstrate how file type encoding could be this issue, I copy/pasted your example script into Notepad in Windows (I don't have access to a Mac), then copied it to a linux machine and ran it:
jdt#cookielin01:~/windows> sh ./originalfile
./originalfile: line 2: syntax error near unexpected token `$'{\r''
'/originalfile: line 2: `test() {
In this case, Notepad saved the file with carriage returns and linefeeds, causing the error shown above. The \r indicates a carriage return (Linux systems terminate lines with linefeeds \n only).
On the linux machine, you could test this theory by running the following to strip carriage returns from the file, if they are present:
cat originalfile | tr -d "\r" > newfile
Then try to run the new file sh ./newfile . If this works, the issue was carriage returns as hidden characters.
Note: This is not an exact replication of your environment (I don't have access to a Mac), however it seems likely to me that the issue is that an editor, somewhere, saved carriage returns into the file.
--- /EDIT
To elaborate a little, operating systems and editors can have different file encoding defaults. Typically, applications and editors will influence the filetype encoding used, for instance, I think Microsoft Notepad and Notepad++ default to Windows-1252. There may be newline differences to consider too (In Windows environments, a carriage return and linefeed is often used to terminate lines in files, whilst in Linux and OSX, only a Linefeed is usually used).
A similar question and answer that references file encoding is here: bad character showing up in bash script execution
try something like
$ sudo apt-get install dos2unix
$ dos2unix offendingfile
Easy way to convert example.sh file to UNIX if you are working in Windows is to use NotePad++ (Edit>EOL Conversion>UNIX/OSX Format)
You can also set the default EOL in notepad++ (Settings>Preferences>New Document/Default Directory>select Unix/OSX under the Format box)
Thanks #jdt for your answer.
Following that, and since I keep having this issue with carriage return, I wrote that small script. Only run carriage_return and you'll be prompted for the file to "clean".
https://gist.github.com/kartonnade/44e9842ed15cf21a3700
alias carriage_return=remove_carriage_return
remove_carriage_return(){
# cygwin throws error like :
# syntax error near unexpected token `$'{\r''
# due to carriage return
# this function runs the following
# cat originalfile | tr -d "\r" > newfile
read -p "File to clean ? "
file_to_clean=$REPLY
temp_file_to_clean=$file_to_clean'_'
# file to clean => temporary clean file
remove_carriage_return_one='cat '$file_to_clean' | tr -d "\r" > '
remove_carriage_return_one=$remove_carriage_return_one$temp_file_to_clean
# temporary clean file => new clean file
remove_carriage_return_two='cat '$temp_file_to_clean' | tr -d "\r" > '
remove_carriage_return_two=$remove_carriage_return_two$file_to_clean
eval $remove_carriage_return_one
eval $remove_carriage_return_two
# remove temporary clean file
eval 'rm '$temp_file_to_clean
}
I want to add to the answer above is how to check if it is carriage return issue in Unix like environment (I tested in MacOS)
1) Using cat
cat -e my_file_name
If you see the lines ended with ^M$, then yes, it is the carriage return issue.
2) Find first line with carriage return character
grep -r $'\r' Grader.sh | head -1
3) Using vim
vim my_file_name
Then in vim, type
:set ff
If you see fileformat=dos, then the file is from a dos environment which contains a carriage return.
After finding out, you can use the above mentioned methods by other people to correct your file.
I had the same problem when i was working with armbian linux and Windows .
i was trying to coppy my codes from windows to armbian and when i run it this Error Pops Up. My problem Solved this way :
1- try to Coppy your files from windows using WinSCP .
2- make sure that your file name does not have () characters
Ok, here I'm again, struggling with ssh. I'm trying to retrieve some data from remote log file based on tokens. I'm trying to pass multiple tokens in egrep command via ssh:
IFS=$'\n'
commentsArray=($(ssh $sourceUser#$sourceHost "$(egrep "$v" /$INSTALL_DIR/$PROP_BUNDLE.log)"))
echo ${commentsArray[0]}
echo ${commentsArray[1]}
commax=${#commentsArray[#]}
echo $commax
where $v is something like below but it's length is dynamic. Meaning it can have many file names seperated by pipe.
UserComments/propagateBundle-2013-10-22--07:05:37.jar|UserComments/propagateBundle-2013-10-22--07:03:57.jar
The output which I get is:
oracle#172.18.12.42's password:
bash: UserComments/propagateBundle-2013-10-22--07:03:57.jar/New: No such file or directory
bash: line 1: UserComments/propagateBundle-2013-10-22--07:05:37.jar/nouserinput: No such file or directory
0
Thing worth noting is that my log file data has spaces in it. So, in the code piece I've given, the actual comments which I want to extract start after the jar file name like : UserComments/propagateBundle-2013-10-22--07:03:57.jar/
The actual comments are 'New Life Starts here' but the logs show that we are actually getting it till 'New' and then it breaks at space. I tried giving IFS but of no use. Probably I need to give it on remote but I don't know how should I do that.
Any help?
Your command is trying to run the egrep "$v" /$INSTALL_DIR/$PROP_BUNDLE.log on the local machine, and pass the result of that as the command to run via SSH.
I suspect that you meant for that command to be run on the remote machine. Remove the inner $() to get that to happen (and fix the quoting):
commentsArray=($(ssh $sourceUser#$sourceHost "egrep '$v' '/$INSTALL_DIR/$PROP_BUNDLE.log'"))
You should use fgrep to avoid regex special interpretation from your input:
commentsArray=($(ssh $sourceUser#$sourceHost "$(fgrep "$v" /$INSTALL_DIR/$PROP_BUNDLE.log)"))
I have a script which redirects std out/std err as below:
SCRIPTS=/test/scripts
LOG=/test/log
echo $SCRIPTS
echo $LOG
$SCRIPTS/dmm_algo_ofac_daily_sched.ksh >> $LOG/test12.log 2>&1
This script is not able to expand $SCRIPTS and $LOG
If I replace it as below:
/test/scripts/daily_sched.ksh >> /test/log/test12.log 2>&1
It complains as below:
: bad file unit numberd/test.ksh: line 33: 1
Also I am not able to invoke the script from the directory where it is saved. If I do
./test.ksh it gives me error saying file not found. I am able to execute it via ksh /test/sched/test.ksh though.
Can someone help me with these. Thanks in advance.
I'm almost certain that the problem is because of DOS/Windows line endings
The error message you are getting is overwriting itself because of a carriage return. You can fix your file using dos2unix.
Add magic #!/bin/ksh to the first line to invoke directly without naming the interpreter on the command line.
I'll conjecture wildly that your root cause(s) has (have) nothing to do with redirection.
Is the script you've exhibited /test/sched/test.ksh or /test/scripts/test.ksh? Are you certain?