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| author | Aaron LI <aaronly.me@outlook.com> | 2017-02-28 10:09:54 +0800 |
|---|---|---|
| committer | Aaron LI <aaronly.me@outlook.com> | 2017-02-28 10:09:54 +0800 |
| commit | e50980f025cd460282ecb2b2a3bed7c72250416b (patch) | |
| tree | 98f1e9cb4ca8da4bd3d5b664cb8eaf4eb8d57b60 /_zsh | |
| parent | f69127878fa2ae49359d54cc31643f1a8f983ccd (diff) | |
| download | dotfiles-e50980f025cd460282ecb2b2a3bed7c72250416b.tar.bz2 | |
Update command existence check function
Credit:
* Stackoverflow: Check if a program exists from a Bash script
Credit: https://stackoverflow.com/a/677212/4856091
Diffstat (limited to '_zsh')
| -rw-r--r-- | _zsh/40-functions.zsh | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/_zsh/40-functions.zsh b/_zsh/40-functions.zsh index 77db01c..2b078ed 100644 --- a/_zsh/40-functions.zsh +++ b/_zsh/40-functions.zsh @@ -5,8 +5,12 @@ # ## Check the existence/accessibility of a command +# Credit: https://stackoverflow.com/a/677212/4856091 function exists() { - which $1 &> /dev/null + # 'command' is POSIX-compliant and more portable; + # 'hash' only searches for commands; + # while 'type' also considers builtins and keywords. + type "$1" >/dev/null 2>&1 } ## Check whether the program is running |