Man Pages – Linux Manual Pages

grep, egrep, fgrep – print lines matching a pattern
USAGE
grep [options] PATTERN [FILE...]
grep [options] [-e PATTERN | -f FILE] [FILE...]

DESCRIPTION
Grep searches the named input FILEs (or standard input if no files are
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gettext, dgettext, dcgettext – translate message
USAGE
#include <libintl.h>

char * gettext (const char * msgid);
char * dgettext (const char * domainname, const char * msgid);
char * dcgettext (const char [...]

getlogin, getlogin_r, cuserid – get user name
USAGE
#include <unistd.h>

char *getlogin(void);
int getlogin_r(char *buf, size_t bufsize);

#include <stdio.h>

char *cuserid(char *string);

DESCRIPTION
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setmtent, mtent, endmntent, addmtent get file system descriptor file entry
USAGE
#include <stdio.h>
#include <mntent.h>

FILE *setmntent(const char *filename, const char *type);

struct mntent *getmntent(FILE *fp);

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