UNIX Directories

Infrastructure

UNIX

UNIX File Management

Check

Create

Remove

Navigate

Comparing Directory Structures Across Servers

Bibliography

Check

pwd

Print Working Directory

tree

exa --long --tree

Show directory tree below current directory

apt install exa

Create

mkdir /u01/mydir/mysubdir

mkdir -p /u01/mydir/mysubdir

Create mysubdir (only if /u01/mydir already exists)

Create mysubdir (also create /u01/mydir if it doesn't exist)

UNIX Directory permissions are configured using the same commands as UNIX File permissions...

UNIX File Permissions

Remove

rmdir /u01/mydir/mysubdir

rm -rf /u01/mydir/mysubdir

Remove mysubdir (if it is empty)

Remove mysubdir and everything in it

Navigate

cd ~

cd ~/bin

cd /home/myuser/bin

cd ..

Used on its own, changes to your home directory

Changes to your home directory (as above)

Changes to a subdirectory of your home directory

Long way of doing the same as above (assuming home is /home/myuser)

Change up one level in the directory tree

pushd

popd

Comparing Directory Structures Across Servers

Generate a file containing only directories that don't exist on both servers...

PRIMARY=myHost1
STANDBY=myHost2
MYPATH=/u01/out
for host in ${PRIMARY} ${STANDBY}
do
ssh -q ${host} find ${MYPATH} -type d
done | sort | uniq -u >/tmp/diff$$.txt

Generate a report showing which directories are missing from each server...

for host in ${PRIMARY} ${STANDBY}
do
echo ${host}
for file in $(cat /tmp/diff$$.txt)
do
ssh -q ${host} ls -ld ${file}
done | grep "does not exist"
done

Cleanup...

rm /tmp/diff$$.txt

Bibliography

https://unix.stackexchange.com/questions/77077/how-do-i-use-pushd-and-popd-commandshttps://github.com/ibraheemdev/modern-unixhttps://github.com/ogham/exahttps://stackoverflow.com/questions/71074558/how-to-use-tree-or-du-command-to-get-directory-content-sizes

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