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Top Forums Shell Programming and Scripting tell me how many specific characters there are? Post 102267 by buffoonix on Thursday 16th of March 2006 06:52:47 PM
Old 03-16-2006
I'm sure one could do this with a little bit of shell scripting
but Perl's transliterate operator involves less effort.

e.g. if I was interested in the No. of slashes in my passwd I could say

# perl -ne '$c+=$_=~tr|/|/|;END{print"$c\n"}' /etc/passwd
184
 

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HESIOD(3)						     Library Functions Manual							 HESIOD(3)

NAME
hesiod_getpwnam, hesiod_getpwuid, hesiod_free_passwd - Hesiod functions for retrieving passwd information SYNOPSIS
#include <hesiod.h> struct passwd *hesiod_getpwnam(void *context, const char *name) struct passwd *hesiod_getpwuid(void *context, uid_t uid) void hesiod_free_passwd(void *context, struct passwd *pw) cc file.c -lhesiod DESCRIPTION
This family of functions allows you to retrieve passwd database information using Hesiod. To perform lookups, you need an initialized Hes- iod context; see hesiod(3) for details. You may look up passwd information by name or by uid; information is returned in the same format as by getpwnam or getpwuid. It is the caller's responsibility to call hesiod_free_passwd with the returned passwd entry to free the resources used by the passwd entry. Hesiod queries for passwd information are made using the ``passwd'' or ``uid'' Hesiod type, using either the username or the decimal repre- sentation of the uid as the Hesiod name. The corresponding records should be a colon-separated list of fields giving the username, encrypted password, uid, gid, GECOS information, home directory, and shell of the user. RETURN VALUES
On failure, hesiod_getpwnam and hesiod_getpwuid return NULL and set the global variable errno to indicate the error. ERRORS
These calls may fail for any of the reasons the routine hesiod_resolve may fail. SEE ALSO
hesiod(3) 30 November 1996 HESIOD(3)
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