26 февр. 2009 г. · Answer. POSIX compatible: command -v <the_command>. Example use: if ! command -v <the_command> 2>&1 >/dev/null then echo "<the_command> ... How can I check if a command exists in a shell script? [duplicate] Bash: How to determine if a command exists without running it? Check if a command exists in Bash (including superusers) How to check if command exists for a user? - Stack Overflow Другие результаты с сайта stackoverflow.com

22 мар. 2022 г. · You can use command -v to check for availability of a command. No need to check its output, command will tell you via its exit status if it succeeded to find ... What is the best method to test if a program exists for a shell ... How do I test to see if an application exists in $PATH? Другие результаты с сайта unix.stackexchange.com

27 мая 2024 г. · To verify a program exists with command, we can provide the -v parameter followed by the name of the program. If it finds the relevant file, ...

15 февр. 2024 г. · True if file exists and is executable. True indicates only that the execute flag is on. If file is a directory, true indicates that file can be searched.

check that "realpath" command exists. if ! type "realpath" > /dev/null; then. printf "$red%s$normal$nc\n" "\"realpath\" command is not installed".

7 мар. 2023 г. · We have discussed three methods for checking if a command exists, namely using the command, which, and type commands, and provided sample code to demonstrate ...

6 апр. 2010 г. · I want find out if a command exists on UNIX from a bash shell script. If command does not exists in $PATH, then I would like to display an ...

11 окт. 2016 г. · According to the results, type and command -v are the two fastest ways to test the existence of a command in bash. I have also run the tests ...

26 февр. 2009 г. · Commands found in the hash table are checked for existence before being executed and non-existence forces a normal PATH search.

23 мар. 2023 г. · This article will guide you through different methods to perform this check, allowing you to make your script more robust and reliable.