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- How to cat lt; lt;EOF gt; gt; a file containing code? - Stack Overflow
cat with <<EOF>> will create or append the content to the existing file, won't overwrite whereas cat with <<EOF> will create or overwrite the content cat test txt hello cat <<EOF>> test txt > hi > EOF cat test txt hello hi cat <<EOF> test txt > haiiiii > EOF cat test txt haiiiii
- How does an SSL certificate chain bundle work? - Stack Overflow
Unix: cat cert2 pem cert1 pem root pem > cert2-chain pem Windows: copy A cert1 pem+cert1 pem+root pem cert2-chain pem A 2 2 Run this command openssl verify -CAfile cert2-chain pem cert3 pem 2 3 If this is OK, proceed to the next one (cert4 pem in this case) Thus for the first round through the commands would be
- Encode to Base64 a specific file by Windows Command Line
cat <file_name>| base64 to obtain the file's contents encoded as base64 On Windows I'm not able to have the same result I have found this solution: certutil -encode -f <file_name> tmp b64 findstr v c:- tmp b64 del tmp b64 But this needs the system to generate a temporary file and so, at the end, go to destroy it
- How to open a - dashed filename using terminal?
This type of approach has a lot of misunderstanding because using -as an argument refers to STDIN STDOUT i e dev stdin or dev stdout So if you want to open this type of file you have to specify the full location of the file such as - For eg , if you want to see what is in that file use cat -
- linux - How can I copy the output of a command directly into my . . .
cat file | xclip Paste the text you just copied into a X application: xclip -o To paste somewhere else other than an X application, such as a text area of a web page in a browser window, use: cat file | xclip -selection clipboard Consider creating an alias: alias "c=xclip" alias "v=xclip -o"
- How to concatenate string variables in Bash - Stack Overflow
Variables and arrays (indexed or associative*) in Bash are always strings by default, but you can use flags to the declare builtin, to give them attributes like "integer" (-i) or "reference"** (-n), which change the way they behave
- linux - Retrieve last 100 lines logs - Stack Overflow
You can simply use the following command:-tail -NUMBER_OF_LINES FILE_NAME e g tail -100 test log will fetch the last 100 lines from test log
- How to append output to the end of a text file - Stack Overflow
printf "hello world" >> read txt cat read txt hello world However if you were to replace printf with echo in this example, echo would treat \n as a string, thus ignoring the intent printf "hello\nworld" >> read txt cat read txt hello world
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