SOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOSOURCE or _SVID_SOURCE or _XOPEN_SOURCE ] ECHO Echo input characters. ECHOE If ICANON ... line. ECHONL If ICANON is also set, echo the NL character even if ECHOmain(void) { struct utmp entry; system("echo before adding entry:;who"); entry.ut_type = USER_PROCESS ... entry.ut_addr = 0; setutent(); pututline(&entry); system("echo after addin…main(void) { struct utmp entry; system("echo before adding entry:;who"); entry.ut_type = USER_PROCESS ... entry.ut_addr = 0; setutent(); pututline(&entry); system("echo after addin…operation of the program: $ TFILE=$PWD/tfile $ echo '%A' > $TFILE # Full name ... week $ echo '%T' >> $TFILE # Time (HH:MM:SS) $ echo '%F' >> $TFILE # ISO date (YYYYmain(void) { struct utmp entry; system("echo before adding entry:;who"); entry.ut_type = USER_PROCESS ... entry.ut_addr = 0; setutent(); pututline(&entry); system("echo after addin…main(void) { struct utmp entry; system("echo before adding entry:;who"); entry.ut_type = USER_PROCESS ... entry.ut_addr = 0; setutent(); pututline(&entry); system("echo after addin…main(void) { struct utmp entry; system("echo before adding entry:;who"); entry.ut_type = USER_PROCESS ... entry.ut_addr = 0; setutent(); pututline(&entry); system("echo after addin…main(void) { struct utmp entry; system("echo before adding entry:;who"); entry.ut_type = USER_PROCESS ... entry.ut_addr = 0; setutent(); pututline(&entry); system("echo after addin…