Advertisements I have a script which contains the code block: cat << EOF > new_script.sh … echo "$(pwd)" >> log.txt … EOF The script new_script.sh is set to run at a later time. Bash recognizes the $(pwd) within the script and evaluates it before it looks at the entire EOF block, so the pwd of… Read More Output of a command within here-document
Advertisements I think the two commands below should be identical, but given the heredoc, the shell produces an error. Is it possible to pass a heredoc to the -c argument of sh? heredoc example /bin/sh -c <<EOF echo ‘hello’ EOF # ERROR: /bin/sh: -c: option requires an argument simple string example /bin/sh -c "echo ‘hello’"… Read More sh -c doesn't recognize heredoc syntax
Advertisements I’m making a basic installation script (my first to be precise) for LAMP, and I experienced some difficulties: I trying to put some configuration in a new file, in this case for ssl-params My humble code: cat > /etc/apache2/conf-available/ssl-params.conf << ENDOFFILE SSLCipherSuite EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH SSLProtocol All -SSLv2 -SSLv3 -TLSv1 -TLSv1.1 SSLHonorCipherOrder On Header always set… Read More Creating a new file and add some text to it using bash
Advertisements For the following bash script sudo -u root bash << EOF FILE="defaults.txt" if [ ! -e "$FILE" ]; then echo "min_granularity_ns" > $FILE fi EOF I get this error: bash: line 3: syntax error near unexpected token `newline’ bash: line 3: ` echo "min_granularity_ns" > ‘ Don’t know what is wrong with that. If… Read More Using > and variable file name
Advertisements I need to create a bunch of strings using heredocs which I want to store in an array so that I can run them all through processes later. For example IFS=” read -r -d ” data << END { "my": "first doc" } END IFS=” read -r -d ” data << END { "my":… Read More How can you append to a bash array of strings with heredoc