Jan 30, 2017 · I found that on Bash 3.2.57, using declare -i x and then doing x+=1 in a loop (doing other thing), x did not increment more than one time. The let and (()) methods worked fine.

Aug 27, 2011 · To set an environment variable from a script, use the export command in the script, and then source the script. If you execute the script it will not work. For an explanation of the difference …

Linux Bash Script, Single Command But Multiple Lines? Ask Question Asked 13 years, 1 month ago Modified 2 years, 8 months ago

Jul 25, 2017 · Furthermore, when you use bash -c, behavior is different than if you run an executable shell script, because in the latter case the argument with index 0 is the shell command used to invoke it.

Your command-line environment is the parent of the script's shell, so it does not see the variable assignment. You can use the . (or source) bash command to execute the script commands in the …

Oct 6, 2016 · I saw the following syntax in a bash script: >$(command) & I know that the ampersand & at the end makes a command run in the background, but I have never seen it in combination with the …

Bash uses the value of the variable formed from the rest of parameter as the name of the variable; this variable is then expanded and that value is used in the rest of the substitution, rather than the value …

Apr 11, 2017 · Is it possible to launch a command or Bash script exit terminal and NOT interrupt command? My solution was to run cron at a specific time of day, but I'm sure there is something easier.

57 Suppose I have a script script.sh, which takes some time to execute. I execute it, ./script.sh. While it is running in a terminal window, I modify the file script.sh. Will this have any effect on the already …

Mar 19, 2020 · What is [? [ performs a test. The purpose of [ is to test something (e.g. if some file exists) and to return exit status zero if the test succeeds, non-zero otherwise. [ is a command. [ is a …