This line if [[ $hamachi_reachable = true && $lan_reachable = true ]]; then is always evaluating to true. I gave two ips that are not valid, so that both variables would become false yet the whole expression is evaluating as true. With that set -x in there, I get this output.
I blame myself but I am lazy person. Now I am trying to learn a bit a bash scripting. But saving any script to see how it works is so boring. You know these exercises:
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Now save this in a file - say helloworld.sh (haha), chmod and execute to see
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Is there a way to execute text as a script? I mean
In my script, and I would like to concatenate 2 variables names, to give me the true variable.I've 3 variables X1, X2 and X3, and I invoked them inside a for loop.
I am trying to evaluate the variable HEADER to see if it contains "HTTP/1.1 200 OK" and if so, to do something. If not, do something else. (writing to files - see below).The variable is being set, as ALL of the URLs that I am evaluating are being put into bad_urls.txt with their response headers. I can't figure out what I'm doing wrong. I've tried modifying the line in question quite a bit, trying different things, including:
if [[ ${HEADER} =~ "HTTP/1.1 200 OK" ]]; then if [[ ${HEADER} == "HTTP/1.1 200 OK" ]]; then if [[ HEADER = "HTTP/1.1 200 OK" ]]; then
I'm trying to read content of file to variable and use this variable in for loop. The problem is, when I have c++ comment style in file - /*. Spaces in line are also interpreted as separated lines.
For example:
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Changing $files to "$files" eliminate these problems but causes that whole content of variable is treated as one string (one execution of loop).
How can I handle the situation below so that the "Fatal Error" message is not shown. It would be ideal if I could supply a default class to be used. I'd prefer to not use: ini_set() to supress the errors but actually be able to "handle" the error.
Now in my bash script, I want to get the output /home/user instead of $HOME once read. So far, I have managed to get the $HOME variable but I can't get it to echo the variable. All I get is the output $HOME.
I have a laptop that I am in through SSH. The laptop does not have an Xwindow system so I am using the program fbi to open an image on my laptop screen from my SSH connection:
fbi -T 8 picture.jpg #this opens the image on the laptops tty8 terminal
I've found that making a for loop does not work with files that contain a space in the name. Something to due with a bug that they call a "feature" that stops the first variable at the first whitespace.
Using a "while" loop is not exactly what i require either seeing as I want to be able to view each image in the directory on screen and tag it accordingly, before it jumps off to the next image, and I'm not sure how to add a pause to a while loop.
How do I make a Bash script and loop Variables handle files like "files that contain spaces.jpg"
I am programming in bash and really stuck finding directory names. I have a script to find all the .php files on my / partition which will return the whole path. Is there a way to print directory hierarchy with all those values leaving out the forward slashes.
Im writing my first bash script. Its function is to move files to the trash can and write a log file in the same format that the system does to allow for file restoration. The problem is that in bash, everything works fine, but in the OpenBox window session, the files are named after the source directory, not the original name. Heres the script:
Code: #!/bin/bash # trash - Script to move file or folder to the trash can and create a log file ##### Functions ##### err_output () # Writes error message { echo "$0: cannot stat `$1': No such file or directory" echo "USAGE: $0 SOURCE DEST" exit 1 } >&2
if [ -e "${DEST}/${FILE}" ]; then max=0 DIR="$(pwd)" cd "$DEST" shopt -s nullglob for backup in "${FILE}."; do nr=${backup#${FILE}.} if [[ "$nr" =~ ^[0-9]+$ ]]; then if (( nr>max )); then max="$nr" fi fi done cd "$DIR" max=$(( max + 1 )) write_log_numbered mv -- "$SOURCE" "${DEST}/${FILE}.$max" else write_log_unique mv -- "$SOURCE" "$DEST/${FILE}" fi
So I run the script with the test file "Junk". In bash, it moves over and its named correctly. Code: ~/.local/share/Trash/files$ ls file file.1 Files Files.1 Junk The log file is also named correctly
Code: ~/.local/share/Trash/info$ ls file.1.trashinfo Files.1.trashinfo Files.trashinfo file.trashinfo Junk.trashinfo
But, when I go to view the trash can in the file manager in Openbox, the file is called "Testing" which is the name of the source directory. However, if I go to the trashcan via its full path (going to .local/, then share/) all the files are named correctly. Whats going on here? Is there some way to get the trash can to read the correct file name?
My issue is I can't handle the files with spaces in their name, I've donde the below script to print each file found inside folder and subbfolders with "find".
I would like to "ls" to each file found with its complete path and with its basename too.
Code: files=$(find . -type f) for each in "$files" do ls -l "$each" # 1rst option I've tried to list with full path ls -l "$(/bin/echo "$each")" # 2nd option I've tried to list with full path ls -l "$(/bin/echo $(basename "$each"))" # 1nd option I've tried to list with it basename
[Code].....
How can I list "ls -l" in both cases (with full path and with basename) when there are files with spaces in their name?
Just a simple BASH for loop to read the file path from a text file (clean.txt) echo the variable for debug purposes, and scp it to a server I have using port 50 for SSH.
I've already formatted the entries in clean.txt to handle spaces correctly, using sed replacement.
Example from the clean.txt file:
Code: /MP3/NAS000000001/Barenaked Ladies/Barenaked Ladies - Barenaked For The Holidays/20 Auld Lang Syne.mp3 /MP3/NAS000000001/Barenaked Ladies/Barenaked Ladies - Barenaked For The Holidays/14 Deck the Stills.mp3
I want to write a c program with some shell scripts.Now For a simple C program. I am Setting a variable called val2 in bash, now I want to use bash variable val2 in C code. How do I do that?The above doesn't work (coz its spawning a different memory space and when shell script ends the variable dies with it as per my research but how do I keep them in same memory space)Also Is there any Good reference where they teach how to integrate C and Bash Together?
i've just started to learn about functions in Bash scripting. I'm able to set the functions and execute the commands correctly. However, if my_var is set in the first function and then later in the script in the script the 2nd function is called, it doesn't seem to remember my_var and quits (at least i suspect this is the problem).
Here's my code (it requires yad available via webupd8. org). My specific problem seems to lay in line #27 where if we view the changelog and then exit that window, it returns to the "main" function but any subsequent commands cause a crash. Is this because of the get command on line #29? It's presumably now out of scope after calling menu on line #25?
I have a file with around 1000 IP addresses in it and I need to be able to ssh into each one of them, run a single command, and then exit. I already know the ssh command I want to run and it looks like this:
(I know shpass is not good to use and keys are the correct way but I don't have any other options in this scenario.) if these ip addresses were in a .csv file, by themselves with no other information, how would I create a script to do the above command to each ip until the end of the file?
An input filename ($1) is fed into mediainfo, which by the use of grep and cut spits out a single number which is the aspect ratio. This is then divided by bc into 320, which gives the desired height dimension for the file that I want ffmpeg to create for me. Finally, ffmpeg runs using the calculated dimensions... Basically, it's the passing of the $ASPECT variable to bc that seems to fail. It looks like bc won't read the output from the mediainfo line... It always crashes out with:
Code:
(standard_in) 1: illegal character: ^M I've tried doing something even simpler like this to debug by just trying it to display the calculation on the screen:
I have a program that loops over each word in a sentence. I need to append a constant to the beginning and end of each word. It works up until the last word on the line.
I was wondering if possible in bash for a variable to take the value of a function, I mean the function returns a value and a variable will take it. example:
The output of following code is not like it's intended ...
Code:
This is the output:
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Test prepending ...apple is a nice word, hour is a nice word, But of course what I want to do in the first set of commands is to prepend the word "an" to the words "apple" and "hour" in the for-loop.
Within a bash script, I'm attempting to redirect file descriptors with exec, e.g. exec 3>&1 1>&2; however, I'd like to do something like exec $FD>&1 1>&2, which doesn't work because bash tries to execute the value of $FD. Various placements of eval fail, as well. Is there a way around this, or am I stuck hard-coding the descriptor?
So that when I grep on the local file again later, it can be printed out with original log lines. Otherwise, the log lines will be dropped and lines becomes concatenated into a single line, e.g., if I rewrite the script in this way, echoing the $result is not a good idea..
is there some workaround that I can save it to a variable rather than file but still keep the eol? That will simplify my script and don't need to do all those I/Os!
I have a bash script that calls a java class method. The method returns a string to the linux console when run independently. how can I assign the value from the java method to a variable in a bash script?running the script: java -cp /opt/my_dir/class.method [parameter]
Is there a variable which will tell you which keyboard mapping you are using? I want to write a bash script that will change my keymapping from Dvorak keyboard to US keyboard. I cannot seem to find a variable to read from. I was going to use the "if [ ] then; statement".
