sys / lin / bash

loop
sed
find

loop

# change echo with enum4linux, nmap, ... 
for i in {1..254}; do echo 172.17.135.$i >> tt.txt; i=$i+1; done

sed

#? getting-start sed
#
#? sed print line by its number X
sed -n Xp toto.txt

#? sed print file section from line number X to Y
sed -n "X,Y/*/p" toto.txt

#? sed print file section from line number X to EOF
sed -n "X,/*/p" toto.txt

# sed insert a space between 2 IPs - solving copy/paste issue of nessus reports
sed '%s/.([0-9]+)192./.\1 192./g' 

# oneliner howto example 1
howto "docker install spiderfoot" 2021-10-26-sys-cli-docker.md

# oneliner howto example 2
howto "# oneliner .* ex" 2021-10-26-sys-cli-lin.md

# removes the DOS carrier return
# to get the character, type Ctrl+Q, then Ctrl+M OR Ctrl+V, then Ctrl+M  
:%s/^M$//g

find

### <a name='findpdffilescreatedlas24hoursinDownloadsdirectory:'></a>find pdf files created las 24 hours in Downloads directory:
find ~/Dowloads -iname *.pdf -a -ctime 1

## <a name='identifyfileswiththesuidsgidpermissions'></a>identify files with the suid, sgid permissions
find / -perm +6000 -type f -exec ls -ld {} \; > setuid.txt &
find / -perm +4000 -user root -type f -