-
Listing only directories;
List all directories recursively in working directory.
|
1 2 3 4 5 6 |
[root@remotekernel home]# find . -type d . ./remotekernel ./remotekernel/scripts ./remotekernel/scripts/test ./remotekernel/confs |
Below command just list directories in working directory.
|
1 2 |
[root@remotekernel home]# ls -l | grep ^d drwx------. 5 remotekernel admin 4096 May 8 17:44 remotekernel |
-
Finding largest files and directories;
|
1 2 3 4 5 6 7 8 9 10 11 12 |
[root@remotekernel ~]# find . -maxdepth 1 -exec du -hs {} \; 528K . 4.0K ./loop 4.0K ./.bash_history 24K ./scripts 4.0K ./.bash_logout 4.0K ./.bashrc 4.0K ./.viminfo 4.0K ./.bash_profile 464K ./ks 4.0K ./reg.sh 8.0K ./confs |
-
Count the files in directories;
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 |
[root@remotekernel /]# for dir in `ls`; do echo $dir: `ls $dir | wc -l`; done bin: 119 boot: 9 cgroup: 8 dev: 191 etc: 243 fmt: 1 home: 3 lib: 9 lib64: 226 lost+found: 0 media: 0 misc: 0 mnt: 0 net: 0 opt: 1 proc: 167 root: 7 sbin: 303 selinux: 0 srv: 0 sys: 11 tmp: 0 usr: 12 var: 20 |
Tcpdump ;
|
1 |
tcpdump -i eth0 -nnvv 'port 1453' >> dump.pcap |
Restrict yum to install or upgrade a package to a fixed specific package version.
|
1 2 3 4 5 6 7 8 9 10 |
yum install yum-versionlock [root@remotekernel /root]#yum versionlock gcc Adding versionlock on: 0:gcc-4.8.5-4.el7 versionlock added: 1 [root@remotekernel /root]#yum versionlock list 0:gcc-4.8.5-4.el7.* versionlock list done [root@remotekernel /root]#cat /etc/yum/pluginconf.d/versionlock.list # Added locks on Wed Oct 28 08:42:31 2015 0:gcc-4.8.5-4.el7.* |
