I would like to change this Makefile: SHELL := /bin/bash PATH := node_modules/.bin:$(PATH) boot: @supervisor \ –harmony \ –watch etc,lib \ –extensions js,json \ –no-restart-on error \ lib test: NODE_ENV=test mocha \ –harmony \ –reporter spec \ test clean: @rm -rf node_modules .PHONY: test clean to: SHELL := /bin/bash PATH := node_modules/.bin:$(PATH) boot: @supervisor \ … Read more
wc -l file.txt outputs number of lines and file name. I need just the number itself (not the file name). I can do this wc -l file.txt | awk ‘{print $1}’ But maybe there is a better way? 10 Answers 10
This question already has answers here: Rename multiple files based on pattern in Unix (23 answers) Closed 4 years ago. Write a simple script that will automatically rename a number of files. As an example we want the file *001.jpg renamed to user defined string + 001.jpg (ex: MyVacation20110725_001.jpg) The usage for this script is … Read more
I just recently switched from bash to zsh, however I miss my Alt+LeftArrowKey and Alt+RightArrowKey to go back and forth a word at a time. Right now, if I press Alt+LeftArrowKey I go back a couple of letters and then I’m stuck. I won’t go any further backwards and it won’t back to the end … Read more
This question already has answers here: How can I check if a program exists from a Bash script? (39 answers) Closed 3 years ago. The community reviewed whether to reopen this question 10 days ago and left it closed: Original close reason(s) were not resolved I am writing my first shell script. In my script … Read more
My command’s output is something like: 1540 “A B” 6 “C” 119 “D” The first column is always a number, followed by a space, then a double-quoted string. My purpose is to get the second column only, like: “A B” “C” “D” I intended to use <some_command> | awk ‘{print $2}’ to accomplish this. But … Read more
I’m sure I once found a shell command which could print the common lines from two or more files. What is its name? It was much simpler than diff. 12 Answers 12
I can’t seem to get jq to behave “normally” in a shell pipeline. For example: $ curl -s https://api.github.com/users/octocat/repos | jq | cat results in jq simply printing out its help text*. The same thing happens if I try to redirect jq‘s output to a file: $ curl -s https://api.github.com/users/octocat/repos | jq > /tmp/stuff.json Is … Read more
find . -type d can be used to find all directories below some start point. But it returns the current directory (.) too, which may be undesired. How can it be excluded? 5 Answers 5
I’m executing a script connecting via password-less SSH on a remote host. I want to set a timeout, so that if the remote host is taking an infinite time to run, I want to come out of that ssh session and continue other lines in my sh script. How can I set a timeout? 7 … Read more
