if you do a very simple alias in zsh, does it work? open your .zshrc file, and add the following line: alias ls=”ls -GpF” after adding that line, type this line in your Terminal: source ~/.zshrc tell us what happens. Also, just for shiggles, make sure you are using single quotes vs. double quotes, I … Read more
You can see if it’s really not set. Run the command set | grep TERM. If not, you can set it like that: export TERM=xterm
One-liner: [ -f old ] && mv old nu
From the man-page of bash: -c string If the -c option is present, then commands are read from string. If there are arguments after the string, they are assigned to the positional parameters, starting with $0. Example: $ bash -c ls will launch bash and execute the command ls. /bin/sh is usually a symlink to … Read more
You can comment section of a script using a conditional. For example, the following script: DEBUG=false if ${DEBUG}; then echo 1 echo 2 echo 3 echo 4 echo 5 fi echo 6 echo 7 would output: 6 7 In order to uncomment the section of the code, you simply need to comment the variable: #DEBUG=false … Read more
TL;DR: This is just by-passing the set -e flag in the specific line where you are using it. Adding add to hek2mgl’s correct and useful answer. You have: set -e ! command Bash Reference Manual → Pipelines describes: Each command in a pipeline is executed in its own subshell. The exit status of a pipeline … Read more
Signals by default are handled by the kernel. Old Unix systems had 15 signals; now they have more. You can check </usr/include/signal.h> (or kill -l). CTRL+C is the signal with name SIGINT. The default action for handling each signal is defined in the kernel too, and usually it terminates the process that received the signal. … Read more
To quickly explain what the others missed: echo “hey” >&2 > redirect standard output (implicit 1>) & what comes next is a file descriptor, not a file (only for right hand side of >) 2 stderr file descriptor number Redirect stdout from echo command to stderr. (If you were to useecho “hey” >2 you would … Read more
Edit: Note that the original post has been edited since this answer was written and has been reformatted. You should look at the history to see the original formatting to understand the context for this answer. This error occurs often when you have mismatched structure – that is, you do not have matching double quotes, … Read more
Use the tee command: echo “hello” | tee logfile.txt