After I run this$ docker run –rm -v “/c/users/vipul rao/documents/github/wappalyzer:/opt/wappalyzer” -it wappalyzer/dev I am getting the following error the input device is not a TTY. If you are using mintty, try prefixing the command with ‘winpty’ What should I use here? I am running Docker on Windows 8 in MINGW64.
Something like this should work (suggested by orip): if you prefer subshells, you could try the following (though it is more fragile): Git will invoke SSH which will find its agent by environment variable; this will, in turn, have the key loaded. Alternatively, setting HOME may also do the trick, provided you are willing to … Read more
A sample command that exhibits the symptom: sed ‘s/./@/’ <<<$’\xfc’ fails, because byte 0xfc is not a valid UTF-8 char.Note that, by contrast, GNU sed (Linux, but also installable on macOS) simply passes the invalid byte through, without reporting an error. Using the formerly accepted answer is an option if you don’t mind losing support for your true locale (if you’re on a US system … Read more
set -x enables a mode of the shell where all executed commands are printed to the terminal. In your case it’s clearly used for debugging, which is a typical use case for set -x: printing every command as it is executed may help you to visualize the control flow of the script if it is not functioning … Read more
Use wc: This will output the number of lines in <filename>: Or, to omit the <filename> from the result use wc -l < <filename>: You can also pipe data to wc as well:
If you are using the Git Bash shell, you can use the following trick: This is actually the same as: Then, you can use git add webpage.html to stage the file.
For integers: Use arithmetic expansion: $((EXPR))num=$((num1 + num2)) num=$(($num1 + $num2)) # Also works num=$((num1 + 2 + 3)) # … num=$[num1+num2] # Old, deprecated arithmetic expression syntax Using the external expr utility. Note that this is only needed for really old systems.num=`expr $num1 + $num2` # Whitespace for expr is important For floating point: Bash doesn’t directly support … Read more
Tutorial A friend wrote a bash script to automatically restart a minecraft (spigot) server in the event of a crash or with the command “/stop” when using screen. There are several seconds to cancel the restart with Enter. In addition, the exit codes of the previous session are written to a file, which can be … Read more
Note: For a POSIX-compliant solution, see this answer. ${BASH_SOURCE[0]} (or, more simply, $BASH_SOURCE[1] ) contains the (potentially relative) path of the containing script in all invocation scenarios, notably also when the script is sourced, which is not true for $0. Furthermore, as Charles Duffy points out, $0 can be set to an arbitrary value by the caller.On the flip side, $BASH_SOURCE can be empty, if no named file is involved; e.g.:echo ‘echo “[$BASH_SOURCE]”‘ | … Read more
The first line, #!/bin/bash, tells Linux where to find the interpreter. The script should also be executable with chmod +x script.sh, which it appears you did. It is highly likely that you created this file with a windows editor, which will place a <cr><lf> at the end of each line. This is the standard under … Read more