====New commands check github ===============
https://github.com/sjcode236/linux/blob/master/scripts/findCmds.rb
find command
scripts
awk , cut , etc
---------find commads -------------
To change ownership of link itself instead of pointed file
chown -h
edw01:edw sched
chown -h -R
cauagt pcm
command to find link files
find . -type l -print -exec chown -h
root:system {} \;
find . -type l -print
find . -type l
-print -exec ls -al {} \;
find xargs
usage
find /abinitio
-print0 |xargs -0 chown -h root:sys
find /abinitio
-print0 |xargs -0 ls –dl
command to find file with specific userid find
-exec usage
find . –user userid/username
find
. -user 501
find
/users -user sobyjose -exec ls -l {} \;
-exec echo {} \;
command to find file with specific group
find / -group
groupid/groupname
find / -group 503/osa
command to find files with specific name
find . -name wk_mers_da* -print -exec chown
-h edw01:edw {} \;
find . -name
wk_mers_da -print -exec ls -al {} \;
command to find the file with specific sizes
find
. –size 2048 (file with 1MB size)
find
. –size +2048 (files more than 1MB
size)
find
. –size -2048 (file more than 1MB size)
To merge Directories using find command
cd ${SOURCE};
find . -type d -exec mkdir -p ${DEST}/\{} \;
find . -type f -exec mv \{} ${DEST}/\{} \;
find . -type d -empty -delete
-----!! can use rsyc command also to merge directories
rsync -av /images /images2
If images with the same name exist in both directories, the command above will overwrite /images2/SOMEPATH/SOMEFILE with /images/SOMEPATH/SOMEFILE.
If you want to replace only older files, add the option -u. If you want to always keep the version in /images2, add the option --ignore-existing.
If you want to move the files from /images, with rsync, you can pass the option --remove-source-files.
list files with size more than 20MB and sort in revers order
find ../apps -size +40960 -exec ls -l {} \; |sort -r -k 5
----- awk , cut , sed ,grep ----------------------------------
More than one command
in a line is possible with “;”
date;pwd
-> grep commands
dmidecode -t baseboard |egrep -i
"Desig|Bus|type|status"
dmidecode -t baseboard |grep -B1 -A3 Ethernet |egrep -i
"Desig|Bus|type|status"
-L,
--files-without-match
grep -L : /sys/class/net/*/address
-l,
--files-with-matches
grep -l : /sys/class/net/*/address
-H,
--with-filename
grep -H : /sys/class/net/*/address
-h, --no-filename
grep -h : /sys/class/net/*/address
-n,
--line-number
grep -n : /sys/class/net/*/address
---------script examples --------------
Header of a cript
#!/bin/sh
set –x -----------> to display commads on prompt
chfs -m /p1n4/edwprod1/partition25/mptsc1 /edwprod1/partition25/mptsc1
To
list the lines in a file
for i in `cat ./soby/userlist`
do
print $i
done
To
read names from a file and create homedirectories and set ownerships
#!/bin/sh
#set -x
for i in `cat ./soby/userlist`
do
dirc=$i
mkdir $dirc
owne=$i
grp=`lsuser -a pgrp $i |awk '{print $2}' |cut -c 6-`
chown $owne:$grp
/home/$dirc
print $dirc
done
To
list all the physical volumes with pvid in the order of bcu volume groups (used in dwpf3n1)
for i in $(lsvg |grep
bcu)
do
for j in $(lsvg -p
$i |awk '{print $1}' )
do
lspv |grep $j
done
done
To
send mail with bcc by reading the ids from file idlist
#!/usr/bin/ksh
if (( $# < 2 )); then
print "no subject and To address "
exit
fi
subject=$1
to=$2
bcclist="~b "
for i in `cat idlist`
do
bcclist=`echo "$bcclist " "$i"`
done
echo $bcclist
echo "$bcclist" > finalmail
echo "this is the body of message\n" >>
finalmail
cat /etc/motd >> finalmail
mail -s "$subject" $to
< finalmail
to fill filesystem with dummy files
i=11
while
(( $i < 330000 ))
do
if
mkdir tst${i}
then
echo
tst${i}
touch tstfile${i}
cat firstfile > tstfile${i}
cd
tst${i}
touch
tstfile${i}a
cat
/testfs/firstfile > tstfile${i}a
cd
/testfs
else
break
fi
i=$(($i
+ 1))
done
script to list the Physical volumes in bcu volume groups
(server dwpf3n2)
for i
in $(lsvg |grep bcu |awk '{print $1}')
do
lsvg
-p $i
sleep
1
done
---------------------------------------
Loop for 0 to 100
i=0
while
[ $i -le 100 ]
do
echo
"Hello Soby checking the value of i=$i"
i=`expr
$i + 1`
sleep
2
done
-----------------------------------------------------------------------
List all the wwwn of all fcs adapters in system
for i in $(lsdev -Cc adapter |grep fcs |awk
'{print $1}')
do
k=`lscfg -vl $i |grep -i network `
echo $i "----> "$k
done
---------------------------------------------------------------------------------
for i
in $(lsvg)^Jdo^Jecho $i;lsvg -p $i
;echo;echo;sleep 2^Jdone
---------------------------------------------------------------------------
Recreate user after remove it
lsuser -f sobtest2
> /tmp/sobtest2.0
vi
/tmp/sobtest2.1 --> put the stirng
values in double quotes
cat /tmp/sobtest2.0
|tr '\n' ' ' >/tmp/sobtest2.1
vi
/tmp/sobtest2.1 --> add mkuser
command at begining and username at end
chmod 755 /tmp/sobtest2.1
rmuser -p sobtest2
rm -r sobtest2
/tmp/sobtest2.1
echo "username:passwd" |chpasswd
lsuser -f
larsk01 > /tmp/larsk01.0
vi
/tmp/larsk01.0 --> put the stirng
values in double quotes
cat /tmp/larsk01.0
|tr '\n' ' ' >/tmp/larsk01.1
vi /tmp/larsk01.1 --> add mkuser command at begining and
username at end
chmod 755 /tmp/larsk01.1
rmuser -p larsk01
mv /home/larsk01 /home/larsk01.old2
/tmp/larsk01.1
echo
“larsk01:temppass” | chpasswd
-------------------------------------------------------------------
ln /tmp/t.sh
ls -al
ln /tmp/t.sh a
ls -al
cat *
echo *
ls *
ls *.*
ls *.
ls *.
echo ?.*
echo ?
echo *.?
echo .[a-z]
echo *.[a-z]
echo *.[!a-p]*
sort file1
sort
34
67
87
2
6
7
CTRL d
sort 34 56 2 8 45
75
ls x* 2>
err redirecting stndard output
cat e*
wc
wc err
wc
ls | sort
ls | wc –l
echo line 1 > file1
( write to file1)
echo line 2 >> file1
(append to file1)
cat file1 >> file2
ed file1
r. ->period matches any single character
1,$p print all the
lines
/ ... / look for
three chars surrounded by blanks
/ repeat last search
1,$s/p.o/xxx/g change
all p.o to xxx
1,$p print all the
lines
/^the/ find the
line that starts with the
1,$s/^/xx/
insert xx at the begining of each
line
^ beging of the
line
$ end of the line
abc$ matches
characters 'abc' at the end of a line
^abc matches
chractes 'abc' at the begining of line
\.$ matches any
line ends with period
^\. matches any
line start with period
1,$s/..$// delete
the two characters form each line
^$ matches any line
contains no characters
^ $ matches lines
with single space character
/the/ find line
containing the
/[tT]he/ look for the
or The
/ continue
serach , 'n' also do same thing
/ once again
1,$s/[aeiouAEIOU]//G
delete all the vowels
/[0-9]/ find a line containing a digit
/^[A-z]/ Find a line
that starts with an uppercase letter
1,$s/[A-Z]/*/g
change all uppercase letters to *
[^A-Z] matches any
character except an uppercase letter
[^A-Za-z] matches
any nonalphabetic character
1,$s/[^a-zA-Z]//g
delete all nonalphabetic characters
