Linux Ask! is a Q & A web site specific for Linux related questions. Questions are collected, answered and audited by experienced Linux users.
How to simulate curl using wget command?
Answer:
To simulate a simple curl command using wget, e.g. curl http://www.google.co.uk:
# wget -O- http://www.google.co.uk
To view the HTTP response header (i.e. more verbose), e.g. curl -v http://www.google.co.uk:
# wget -O- -S http://www.google.co.uk
Delete all trailing blank lines at end of file using sed
Answer:
Blank lines at end of a text file are mostly useless, you can remove them easily using sed:
# sed -e :a -e '/^\n*$/{$d;N;ba' -e '}'
Delete trailing spaces or tabs from end of each line
Answer:
To delete trailing spaces or tabs, i.e. whitespaces from end of each line, is easy with the sed command.
# sed 's/[ \t]*$//'
Disable auto /tmp folder clean up when reboot in Debian/Ubuntu
Answer:
In Debian/Ubuntu, the /tmp folder will be auto cleaned up when computer reboot.
To disable this function, do the thing below:
# sudo vim /etc/default/rcS
Change from:
TMPTIME=0
To:
TMPTIME=1
That's all.
How to grep for tab character(s) in Linux
Answer:
To grep for file contains tab characters, you can execute the command below:
# grep $'\t' input.txt
