Ubuntu usefull tips

Alexey Bokov — Mon, 08 Feb 2010 16:03:38 +0000

Ubuntu doesn’t asking for login after boot up ( may happen after unexpected shutdown ) :
press Ctrl-Alt-F1 to login in terminal mode and use fsck to fix it

Add user short memo :[root@my-box ~]# useradd -g users -u 560 tuser [root@my-box ~]# passwd tuser
ps. sudo will be required in not-root case

Proper access rights for .ssh files :chmod 700 ~/.ssh chmod 600 ~/.ssh/id_rsa chmod 644 ~/.ssh/id_rsa.pub chmod 644 ~/.ssh/authorized_keys chmod 644 ~/.ssh/known_hosts

List all files in folder sorted by size : find . -type f -exec du -k "{}" \; | sort -n

Solaris – common questions and it’s differences from Linux

Alexey Bokov — Thu, 02 Apr 2009 17:00:06 +0000

Actually newbies in Solaris ( and experienced users in Linux ) have troubles with some every-day routines which works in Solaris in a different way than in most Linux like Ubuntu. Below I try to list most ”popular” problems and questins about differences in Solaris and Linux and try to figure them out.

grep doesn’t have -r switch, so there’s no recursive looking throught directories, here’s alternatives for recursive grep on Solaris :grep 'somestring' `find . -name '*'`find . | xargs grep 'somestring'
tar doesn’t support -z option, so tar xfz my_archive.tar.gz will fail with error “tar: z: unknown function modifier“. To unpack tar.gz archive on Solaris you may use this one :
gzip -dc my_archive.tar.gz | tar xvpf -
how to set environment variables in Solaris ( i set them in \~/.bashrc, but it doesn’t works ) : to make Solaris read and apply to user environment barsh_rc file try to create file ~/.bash_profile in your home, and put in it lines listed below :
if [ -f ~/.bashrc ]; then . ~/.bashrc fi

To be continued…

Usefull links : Solaris Infrequently Asked and Obscure Questions

Alexey Bokov's weblog » grep

Ubuntu usefull tips

Solaris – common questions and it’s differences from Linux