$PYTHON_REF -c 'print('hello from python 3. If you want to create a JUnit XML report to see in the GitLabs UI, check the instructions here. check_python.sh) # change path if necessary Here is a CI job that will lint all shell-scripts in a Git repository: test: image: koalaman/shellcheck-alpine:latest stage: test beforescript: - apk update - apk add git script: - git ls-files -ignored -c -z. Python_version=`python -version 2>&1 | awk ' $PYTHON_REF To get the version numbers also: if which python > /dev/null 2>&1

The > /dev/null 2>&1 part is there just to suppress output.

This page is part of its documentation.To check if ANY Python is installed (considering it's on the PATH), it's as simple as: if which python > /dev/null 2>&1 ShellCheck is a static analysis tool for shell scripts.

Check if a program exists from a Bash script on StackOverflow.

shellcheck issue: #1162 command -v is not a direct replacement for which (Discussion).

The failure condition is similar to hash. Like command -v, it has a similarly quirky behavior with builtins, aliases, and functions, although this is arguably milder since it would print nothing for these cases. To obtain a path, type -p can be used instead. Which observes the standard behaviour of failures. Other problems associated with command include its inclusion of builtins, aliases, and functions. In the above example, it should have failed and exited with 1 unless all commands exist, if it were to be a replacement for which. Caveats: command -v does not check ALL parametersĬommand -v succeeds (with exit code 0) if any command exists: # grep is in /usr/bin/grep which is very common, and some prefer its executable-or-nothing behavior over command -v's handling of builtins, functions and aliases. This check is opt-in only in 0.7.1+, and you may choose to ignore it in earlier versions. command -v is a POSIX standard builtin, which uses the same lookup mechanism that the shell itself would. Which is a non-standard, external tool that locates an executable in PATH. # For the path of a single, unaliased, external command, # or to check whether this will just 'run' in this shell: command -v grep # To check whether commands exist, without obtaining a reusable path: hash grep Rationale:

Shell Checker V.2 Anons79