May 7, 2017 · How can I write data to a text file automatically by shell scripting in Linux? I was able to open the file. However, I don't know how to write data to it.

Apr 1, 2022 · I need to create and write a file in the middle of a script. Is there a way to do this? Usually, to create and write to a file, I would use cat >file name, then write what I needed and ctrl+d to...

Mar 20, 2017 · Written as it is the shell will exeute the command in a subshell and try to execute the result, adding the redirection to it. I assume you don't want to execute the output, but you want to redirect the output.

Dec 29, 2009 · What shell are you using? the first line should not work in any Borne Compatible shell. Instead of: client_config = xmlrpc_server.properties you should ommit spaces, and write: client_config=xmlrpc_server.properties. Otherwise, you are trying to execute "client_confi" command with first parameter "=" and second parameter "xmlrpc_server.properties"

Here I have demonstrated an example to run python script within a shell script. For different purposes you may need to read the output from a shell command, execute both python script and shell command within the same file.

Just don't do that (variable expansion) in the first place. Use the variable directly, without expansion. Also, if your variable contains a secret and you want to copy that secret into a file, you might want to not have expansion in the command line as tracing/command echo of the shell commands might reveal the secret.

Jan 13, 2011 · Just noting that if you wish to redirect both stderr and stdout to a file while you have noclobber set (i.e. set -o noclobber), you can use the code: cmd >| file.txt 2>&1

To answer your original question, here's how you do it with sed: sed -i '1icolumn1, column2, column3' testfile.csv The "1i" command tells sed to go to line 1 and insert the text there. The -i option causes the file to be edited "in place" and can also take an optional argument to create a backup file, for example sed -i~ '1icolumn1, column2, …

Oct 17, 2016 · The main difference here is the fact that you are using "bash" scripting instead of "shell" scripting. Notice that the first line that you have added was #!/bin/bash, so you are telling the machine to use "bash" instead of sh.

Aug 27, 2013 · In Unix shell, I have a env file (env file defines the parameters required for running the user script like log file name and path, redirect outputs and errors to log file, database connection deta...