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author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2010-02-02 03:38:30 +0000 |
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committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2010-02-02 03:38:30 +0000 |
commit | bf7be45f4e27cb99e4f49628b043fef90b49d5f7 (patch) | |
tree | 8d1cae934ab142b1b05c37c44ac4f99d510eec5a /netpbm.c | |
parent | c994f14b64832ba4fcd1991a5aad1b9e13125b89 (diff) | |
download | netpbm-mirror-bf7be45f4e27cb99e4f49628b043fef90b49d5f7.tar.gz netpbm-mirror-bf7be45f4e27cb99e4f49628b043fef90b49d5f7.tar.xz netpbm-mirror-bf7be45f4e27cb99e4f49628b043fef90b49d5f7.zip |
Improve error message
git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@1107 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'netpbm.c')
-rw-r--r-- | netpbm.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/netpbm.c b/netpbm.c index c47cb37e..7f3e7c96 100644 --- a/netpbm.c +++ b/netpbm.c @@ -29,13 +29,17 @@ int main(int argc, char *argv[]) { - char* cp; + const char * cp; if (strcmp(pm_arg0toprogname(argv[0]), "netpbm") == 0) { ++argv; --argc; if (argc < 1 || !*argv) { - fprintf(stderr, "Usage: netpbm netpbm_program_name [args ...]\n"); + fprintf(stderr, + "When you invoke this program by the name 'netpbm', " + "You must supply at least one argument: the name of " + "the Netpbm program to run, e.g. " + "'netpbm pamfile /tmp/myfile.ppm'\n"); exit(1); } } |