You have to add the sourcing inside the .bashrc. This works: FROM ubuntu:16.04 # Update default packages RUN apt-get update # Get Ubuntu packages RUN apt-get install -y \ build-essential \ curl # Update new packages RUN apt-get update # Get Rust RUN curl https://sh.rustup.rs -sSf | bash -s — -y RUN echo ‘source $HOME/.cargo/env’ … Read more
getent group 124 # mysql:x:124: getent group mysql # mysql:x:124:
test (or [ expr ]) is a builtin function. Like all functions in bash, you pass its arguments as whitespace separated words. As the man page for bash builtins states: “Each operator and operand must be a separate argument.” It’s just the way bash and most other Unix shells work. Variable assignment is different. In … Read more
Use Esc + D or Alt + D to delete the word on the right.
This question was asked ten years ago, so I won’t mark it as duplicate. Also I noticed no sed solution was given since OP asked an answer without: sed -nr ‘s/(hello[0-9]+), please match me/\1/p’ test.txt -n stands for quiet (won’t print anything except if explicitly asked) -r allows use of extented regular expressions (avoids here … Read more
You need to combine filters by means of | operator: $ jq -r ‘.[] | .[] | .name’ test.json rhel6.6 rhel7 The first .[] fetches repositories array. The next .[] fetches all the items of the repositories array. Finally, .name extracts properties from the array items(objects). Note, the first .[] works on object because it … Read more
echo ‘I\’m a student’ does not work. But the following works: echo $’I\’m a student’ From the man page of bash: A single quote may not occur between single quotes, even when preceded by a backslash. …. Words of the form $’string’ are treated specially. The word expands to string, with backslash-escaped characters replaced as … Read more
using “$@” will substitute the arguments as a list, without re-splitting them on whitespace (they were split once when the shell script was invoked), which is generally exactly what you want if you just want to re-pass the arguments to another program. Note that this is a special form and is only recognized as such … Read more
cd /c/ to access C: cd /d/ for D: etc.
In order to convert a string into an array, create an array from the string, letting the string get split naturally according to the IFS (Internal Field Separator) variable, which is the space char by default: arr=($line) or pass the string to the stdin of the read command using the herestring (<<<) operator: read -a … Read more