terminal

问题 This question already has an answer here : shell script command not found when comparing string (1 answer) Closed 3 years ago . I don't know what is the problem to fix Here is the code: #!/bin/sh while true do HOUR=$(date '+%H') TARGET=16 echo $HOUR if [$HOUR -gt $TARGET]; then mail -s "IP" "example@hotmail.com" <<EOF Global_IP=$(curl -s checkip.dyndns.org | sed -e 's/.*Current IP Address: //' -e 's/<.*$//') EOF echo "Sent" fi echo "Waiting..." sleep 3600 echo "Done waiting" done Please help!

问题 This question already has answers here : Check existence of input argument in a Bash shell script (9 answers) Closed 3 years ago . I want to check if the user has given the script any arguments and if this is the case, the script should close. if [ $@ = "" ]; then exit fi is not working. 回答1: You can try like this, if [ "$#" -eq 0 ]; then echo "Illegal number of parameters" fi 来源： https://stackoverflow.com/questions/34925224/how-can-i-check-if-no-arguments-are-given

问题 I am using the last command from this SO answer https://stackoverflow.com/a/54818581/80353 cap()(cd /tmp;rm -f *.vtt;youtube-dl --skip-download --write-auto-sub "$1";sed '1,/^$/d' *.vtt|sed 's/<[^>]*>//g'|awk -F. 'NR%8==1{printf"%s ",$1}NR%8==3'|tee cap) What this command currently do This command will download captions for a youtube video as a .vtt file and then print out on the terminal the simplified version of the .vtt file This command works as described. How to use this command In the

问题 I have been looking into bash and shell recently and been trying to work out how git is able to make a terminal command that runs C scripts in the current directory e.g git init, git push/pull etc. I have been trying to simulate it in python, by making an executable python script in my home directory, #!/usr/bin/env python import os print("current_dir: ",os.getcwd()) #prints /Users/usr/folder/script.py Then I create a .command file that calls the python script cd cd FOLDER/ python3 SCRIPT.py

问题 First off, I appreciate any and all help in answering this question. I have a command in a bash script that will output the following: 255 254 253 252 ... 7 6 5 4 3 2 1 It is a specific list of numbers, beginning with the largest (which is what I would like), then going to the smallest. The dataset is space-delimited. The output above (except including all numbers), is what you would see if you ran this command in the terminal on a linux machine, or through a bash script. I have configured my

问题 I want to get the current directory of the topmost Terminal tab/window (via AppleScript or something else, it doesn't really matter). How can I do that? 回答1: Another solution. get_foregroundterminal_curdir_fast.scpt: tell application "Terminal" do shell script "lsof -a -p `lsof -a -c bash -u $USER -d 0 -n | tail -n +2 | awk '{if($NF==\"" & (tty of front tab of front window) & "\"){print $2}}'` -d cwd -n | tail -n +2 | awk '{print $NF}'" end tell I use lsof itself to get PID of the bash shell

问题 I want to get the current directory of the topmost Terminal tab/window (via AppleScript or something else, it doesn't really matter). How can I do that? 回答1: Another solution. get_foregroundterminal_curdir_fast.scpt: tell application "Terminal" do shell script "lsof -a -p `lsof -a -c bash -u $USER -d 0 -n | tail -n +2 | awk '{if($NF==\"" & (tty of front tab of front window) & "\"){print $2}}'` -d cwd -n | tail -n +2 | awk '{print $NF}'" end tell I use lsof itself to get PID of the bash shell

问题 Got a new mac and now I'm trying to install/update some stuff. THe first issue I get is that http requests made from inside scripts/programs (such as git or ruby gem) doesn't work. I'll put an example below of the workaround I used because it illustrates the issue better than any explanation. Any help is appreciated! Leonardos-MacBook-Air:~ leo$ git clone git://github.com/sstephenson/rbenv.git .rbenv Cloning into '.rbenv'... fatal: Unable to look up github.com (port 9418) (nodename nor

问题 I created a Heroku account yesterday, and uploaded a website, updating it multible times. But today when I tried to upload a new version it did'nt work, it just keeps giving me this error message: ssh: connect to host port 22: Connection refused fatal: The remote end hung up unexpectedly I tried to restart the heroku server, my own computer, create new keys using: http://devcenter.heroku.com/articles/keys If I go ssh -vvv mail@adress: OpenSSH_5.6p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading

问题 I've accidentally made my home directory the master. How do I undo this? Note: every time I open up terminal now it declares that my home directory is (master). I don't want my home directory in github, just a few subfolders. Thanks! 回答1: You can remove the git directory that is hidden inside of your home directory. In the terminal enter the following: cd ~ sudo rm -R .git Note: THIS WILL REMOVE ANY GIT HISTORY FOR YOUR HOME DIRECTORY. This will not remove any files in your home directory but