Ive been getting into bash scripting latley, I think learning a new language might actaully be helping me learn 'C' better, here is the script:
The interesting part to me is the part where the sucess of 'NewPack()' can branch the program to do other things. I just learned this and have already written other scripts to do things in similar ways, like a while loop that ends when the "sucess" changes, as seem below...Code:#!/bin/bash #Check modifications of files and changed directory's and checksums ########################################################################## #I suggest you make sure you system is secure *before* you use this script. #Copy all the file's made to a floppy and make it read-only. ########################################################################### SUCESS= PACK=/var/log/newpack.txt MODTIME=/var/log/modfile.txt SBIN=/sbin USRSBIN=/usr/sbin ETC=/etc CKSUM=/usr/bin/cksum DIRCACHE=/var/log/sbin.txt DIRCACHE1=/var/log/usrsbin.txt DIRCACHE2=/var/log/etc.txt CKSUMCACHE=/var/log/sbinCK.txt CKSUMCACHE1=/var/log/usrsbinCK.txt CKSUMCACHE2=/var/log/etcCK.txt DIRTMP=/tmp.txt DIRTMP1=/tmp1.txt DIRTMP2=/tmp2.txt CKTMP=/tmp3.txt CKTMP1=/tmp4.txt CKTMP2=tmp5.txt WALL=/tmp6.txt NEWPACK=/tmp7.txt TMP=/tmp8.txt TMP1=/tmp9.txt TMP2=/tmp10.txt TMP3=/tmp11.txt database() { echo "Creating Database..." tree /sbin > /var/log/sbin.txt && tree /usr/sbin > /var/log/usrsbin.txt && tree /etc > /var/log/etc.txt find /etc -exec cksum {} \; > /var/log/etcCK.txt 2> /dev/null && cksum /sbin/* > /var/log/sbinCK.txt 2> /dev/null\ && cksum /usr/sbin/* > /var/log/usrsbinCK.txt 2> /dev/null && ls /var/log/packages > $PACK } if [ ! -f "$DIRCACHE" ]; then database fi NewPack() { ls /var/log/packages > $NEWPACK echo "Checking for new installed packages..." if ( ! diff "$NEWPACK" "$PACK" > "$TMP" ); then echo "There is new packages installed..." echo "Would you like to see them?[yes/no]" read ANSWER if [ "$ANSWER" = "yes" ]; then echo "Press 'q' when done..." sleep 3 cat "$TMP" | less SUCCESS=1 fi else echo "There doesnt appear to be any new installed packages..." SUCCESS=0 fi } echo "Working..." find / -mtime 7 -o -ctime 7 2> /dev/null | find / -mtime 6 -o -ctime 6 2> /dev/null | find / -mtime\ 5 -o -ctime 5 2> /dev/null | find / -mtime 4 -o -ctime 4 2> /dev/null | find / -mtime 3 -o -ctime 3 2> /dev/null | find / -mtime 2 -o -ctime 2 2>\ /dev/null | find / -mtime 1 -o -ctime 1 2> /dev/null | find / -mtime 0 -o -ctime 0 2> /dev/null > $MODTIME NewPack if [ "$SUCCESS" = 1 ]; then echo "If you *did* install new packages," echo "you will have to recreate the database." echo "Would you like to recreate the database now? [yes/no]" read ANSWER1 if [ "$ANSWER1" = "yes" ]; then database fi fi tree "$SBIN" > "$DIRTMP" && tree "$USRSBIN" > "$DIRTMP1" && tree "$ETC" > "$DIRTMP2" "$CKSUM" "$SBIN"/* > "$CKTMP" && "$CKSUM" "$USRSBIN"/* > "$CKTMP1" && find "$ETC" -exec "$CKSUM" 2> /dev/null {} \; > "$CKTMP2" if ( ! diff "$CKSUMCACHE" "$CKTMP" > "$TMP1" ); then echo "$HOSTNAME: There has been a CRC checksum change: Check '$SBIN'." > "$WALL" echo "There was a CRC checksum change in '$SBIN'," echo "Would you like to see the possiblity's? [yes/no]" read ANSWER2 if [ "$ANSWER2" = "yes" ]; then echo "press 'q' when done." sleep 3 cat "$TMP1" | less sleep 3 fi else echo "$HOSTNAME: There is no CRC checksum change in '$SBIN'." > "$WALL" fi if ( ! diff "$CKSUMCACHE1" "$CKTMP1" > "$TMP2" ); then echo "$HOSTNAME: There has been a CRC checksum change: Check '$USRSBIN'." >> "$WALL" echo "There was a CRC checksum change in '$USRSBIN'," echo "Would you like to see the possiblity's?[yes/no]" read ANSWER3 if [ "$ANSWER3" = "yes" ]; then echo "press 'q' when done." sleep 3 cat "$TMP2" | less sleep 3 fi else echo "$HOSTNAME: There is no CRC checksum change in '$USRSBIN'." >> "$WALL" fi if ( ! diff "$CKSUMCACHE2" "$CKTMP2" > "$TMP3" ); then echo "$HOSTNAME: There has been a CRC checksum change: Check '$ETC'." >> "$WALL" echo "There was a CRC checksum change in '$ETC'," echo "Would you like to see the possiblitys?[yes/no]" read ANSWER4 if [ "$ANSWER4" = "yes" ]; then echo "press 'q' when done." sleep 3 cat "$TMP3" | less sleep 3 fi else echo "$HOSTNAME: There is no CRC checksum change in '$ETC'." >> "$WALL" fi if ( ! cmp "$DIRCACHE" "$DIRTMP" 1> /dev/null ); then echo "$HOSTNAME: There has been a modification in a critical system dir: Check '$SBIN'." >> "$WALL" else echo "$HOSTNAME: There has been no change in critical system dir '$SBIN'." >> "$WALL" fi if ( ! cmp "$DIRCACHE1" "$DIRTMP1" 1> /dev/null ); then echo "$HOSTNAME: There has been a modification in a critical system dir: Check '$USRSBIN'." >> "$WALL" else echo "$HOSTNAME: There has been no change in critical system dir '$USRSBIN'." >> "$WALL" fi if ( ! cmp "$DIRCACHE2" "$DIRTMP2" 1> /dev/null ); then echo "$HOSTNAME: There has been files added or removed from: '$ETC'." >> "$WALL" else echo "$HOSTNAME: There has been no files added or removed from '$ETC'." >> "$WALL" fi echo "$HOSTNAME: Check '$MODTIME'." >> "$WALL" clear wall "$WALL" echo "if something was found and it checked out, you can recreate the database." echo "Would you like to recreate the database?[yes/no]" read ANSWER5 if [ "$ANSWER5" = "yes" ]; then database sleep 3 echo "Would you like the run the script again?[yes/no]" read ANSWER6 if [ "$ANSWER6" = "yes" ]; then rm "$DIRTMP" "$DIRTMP1" "$DIRTMP2" "$CKTMP" "$CKTMP1" "$CKTMP2" "$NEWPACK" "$WALL" "$TMP" "$TMP1" "$TMP2" "$TMP3" "$0" fi fi if [ -f "$DIRTMP" ]; then rm "$DIRTMP" "$DIRTMP1" "$DIRTMP2" "$CKTMP" "$CKTMP1" "$CKTMP2" "$NEWPACK" "$WALL" "$TMP" "$TMP1" "$TMP2" "$TMP3" fi exit 0
Any thoughts on this?Code:while [ "$SUCESS" = 1 ] do echo "sorry but that username is in use, please choose another" read username if ! test -e /home/$username; then SUCESS=0 fi done
