#include #include #include void typefile (char *filename) { int fd, nread; char buf[1024]; fd = open (filename, O_RDONLY); if (fd == -1) { perror (filename); return; } while ((nread =…
Assume that L is regular. Let p be the pumping length guaranteed by the Pumping Lemma.Take w =0p10p. Clearly, w ∈ L, and |w| ≥ p.We need to show that…
# !/bin/bash echo "enter directory name" read dir if[ -d $dir] then echo "list of files in the directory" ls –l $dir|egrep '^d' else echo "enter proper directory name" fi
Commands:tr: The tr command can be used for to translate the characters that means the given string is replaced with the replacement string.Syntax: Tr [original string] [replacement string]grep: The grep…
Used commands: cd: The cd command can be used for to change the directory that means we can change the existing directory. echo "enter the directory name" read dir if…
if [ $# -lt 1] then echo “ Check the arguments once” exit fi echo “Enter a word” read word for file in $* do grep –iv “$word” $file |…
if [ $# -ne 3 ] then echo “check the arguments once” lastline=‟wc –l < $1‟ if [ $2 –lt $lastline –a $3 -le $lastline ] then nline=‟expr $3 -$2…
echo “enter the login of the user” read name logindetails=`who|grep –w “$name” | grep “tty” if [ $? –ne 0 ] then echo “$name has not logged in yet” exit…
# get filename echo -n "Enter File Name : " read fileName # make sure file exits for reading if [ ! -f $fileName ] then echo "Filename $fileName does…
echo " enter file" read str if test -f $str then echo "file exists n it is an ordinary file" elif test -d $str then echo "directory file" else echo…