Some Scripts

1. To print natural numbers

for i in `seq 1 10` ;do echo $i;done;

2.To print a-z

for i in {a..z};do echo $i;done;

3.To delete all the accounts from a server

for i in `cat /etc/userdomains`;do /scripts/killacct;done;

4.sed -i s/on/off/g php.ini
this will on all off options

5.for i in `cat new2.txt` ; do echo "-------------------$i----------------";ssh -p 1291 -l root $i /usr/local/apache/bin/httpd -v ; e ;done

to fine out version of apache of servers in the file new2.txt

6.grep server version?

for i in `cat new2.txt` ; do echo "-------------------$i----------------";ssh -p 1291 -l root $i /usr/local/apache/bin/httpd -v | grep "Server version" ; e ;done


7. To find out mysql db user?

find /home/costagr/public_html -type f -exec grep -H username_ '{}' \;
8. To copy zone files into a file

ll | awk print '{print $9}'| cat > test

9. Script to replace email id in zone file

for i in `cat /var/named/test` ; do sed -i 's/judyndenis.yahoo.com/convergencecos.gmail.com/g' $i; done


10.script to copy usernames into a file

cat /etc/userdomains | cut -d ':' -f2 >> domaintxt

11. cut command

cat all.txt | cut -d ',' -f2-4 | sort > new.txt

12. It will list 10 files in the decreasing order according to their size

ls -al -SR | head -10

13. Script To watch load for each second ?

watch -n1 w


14. To find out the all space used by a reseller

for a in `grep resellerlogin /etc/trueuserowners | cut -d":" -f1`; do quota -s $a| tail -n 1 | awk {'print $2'};done

15. Replace command

replace 'source' 'destintaion' -- filename

eg; need to change jibin in file.txt to A
replace 'jibin' 'A' -- file.txt