units(1): Add U option
For increased compatibility with GNU units: support a -U option which tests for the existence of the default units file and prints it to the screen.
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3af082017a
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=264463
@ -1,5 +1,5 @@
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.\" $FreeBSD$
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.Dd July 14, 1993
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.Dd April 14, 2014
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.Dt UNITS 1
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.Os
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.Sh NAME
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@ -8,7 +8,7 @@
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.Sh SYNOPSIS
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.Nm
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.Op Fl f Ar filename
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.Op Fl qV
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.Op Fl qUV
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.Op Ar from-unit to-unit
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.Sh OPTIONS
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The following options are available:
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@ -18,6 +18,11 @@ Specify the name of the units data file to load.
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.It Fl q
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Suppress prompting of the user for units and the display of statistics
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about the number of units loaded.
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.It Fl U
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If the default unit file exists prints its location. If not, print
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.Qo
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Units data file not found
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.Qc
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.It Fl V
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Print the version number, usage, and then exit.
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.It Ar from-unit to-unit
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@ -678,7 +678,7 @@ void
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usage(void)
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{
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fprintf(stderr,
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"usage: units [-f unitsfile] [-q] [-v] [from-unit to-unit]\n");
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"usage: units [-f unitsfile] [-UVq] [from-unit to-unit]\n");
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exit(3);
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}
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@ -700,7 +700,7 @@ main(int argc, char **argv)
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quiet = false;
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readfile = false;
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while ((optchar = getopt(argc, argv, "Vqf:")) != -1) {
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while ((optchar = getopt(argc, argv, "UVqf:")) != -1) {
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switch (optchar) {
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case 'f':
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readfile = true;
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@ -712,6 +712,13 @@ main(int argc, char **argv)
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case 'q':
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quiet = true;
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break;
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case 'U':
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if (access(UNITSFILE, F_OK) == 0)
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printf("%s\n", UNITSFILE);
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else
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printf("Units data file not found");
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exit(0);
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break;
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case 'V':
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fprintf(stderr, "FreeBSD units\n");
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usage();
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