HOWTO: print the nth line of a file
$ awk 'NR==1524' file.txt # print the 1524th line of the file using awk $ sed -n '1244p' file.txt # print the 1244th line of the file using sed
Recent Posts
HOWTO: jump to a specific portion of a huge file with less
$ less +56g hugefile.txt # it goes to the 56th line $ less +56p hugefile.txt # it goes into the 56% of the file $ less +56P hugefile.txt # it goes to the...
HOWTO: drop all tables in MySQL
Unfortunately MySQL doesn’t have any command to drop all tables or to truncate the database. It has just DROP TABLE and DROP DATABASE.
HOWTO: remove ^M characters at end of lines in vi/vim
Open the file with vim, then type:
HOWTO: print more than 20 documents in MongoDB’s shell
$ mongo MongoDB shell version: 2.4.5 connecting to: test > DBQuery.shellBatchSize = 100 100 > // Starting from now .find() will print out 100...
HOWTO: use vim as default editor for git
Pick your favorite from the following ones:
HOWTO: remove a file with a leading dash ‘-‘ in it’s name
$ ls /tmp -file_with_leading_slash.txt generic_name.log -file_with_leading_slash2.txt $ rm /tmp/-file_with_leading_slash.txt #using full path $...