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author | Tom Ryder <tom@sanctum.geek.nz> | 2017-04-05 20:06:39 +1200 |
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committer | Tom Ryder <tom@sanctum.geek.nz> | 2017-04-05 20:46:47 +1200 |
commit | c8ab406749124d2e762ad5cf53963070113afd0f (patch) | |
tree | 54c9721a06957ebe7098a211eea803b0230c0f5d /bin/ax.sh | |
parent | Handle POSIX correctness in ~/.bash_profile (diff) | |
download | dotfiles-c8ab406749124d2e762ad5cf53963070113afd0f.tar.gz dotfiles-c8ab406749124d2e762ad5cf53963070113afd0f.zip |
Apply runtime shebanging to POSIX shell
Diffstat (limited to 'bin/ax.sh')
-rw-r--r-- | bin/ax.sh | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/bin/ax.sh b/bin/ax.sh new file mode 100644 index 00000000..6ce1e9ea --- /dev/null +++ b/bin/ax.sh @@ -0,0 +1,27 @@ +# Evaluate an Awk expression given on the command line with an optional format + +# Count arguments +case $# in + + # If one argument, we assume format is %s + 1) form=%s expr=$1 ;; + + # If two arguments, first is format, second expression + 2) form=$1 expr=$2 ;; + + # Any other number of arguments is wrong + *) + printf >&2 'ax: Need an expression\n' + exit 2 + ;; +esac + +# Form program +prog=$(printf ' + BEGIN { + printf "%s\\n", %s + } +' "$form" "$expr") + +# Run program +awk "$prog" |