Twitter | Search | |
Unix tool tip
Tips on Unix utilities and related topics from .
3,438
Tweets
20
Following
74,040
Followers
Tweets
Unix tool tip 10m
sed and awk both use -f <filename> to specify a file of commands.
Reply Retweet Like
Unix tool tip Jun 18
In Emacs, editable dired mode is like piping ls output to a file, editing that file, and having the file system reflect your edits.
Reply Retweet Like
Unix tool tip Jun 17
awk uses -F to specify a field separator. For example, -F: would say to use a colon as the field separator.
Reply Retweet Like
Unix tool tip Jun 17
Drill keyboard shortcuts
Reply Retweet Like
Unix tool tip Jun 14
If a sed command has two addresses separated by a comma, it applies from the first address thru to the second address (inclusive).
Reply Retweet Like
Unix tool tip Jun 13
In bash, cd - takes you back to your previous directory.
Reply Retweet Like
Unix tool tip Jun 12
Where the Unix philosophy breaks down
Reply Retweet Like
Unix tool tip Jun 11
'For almost every purpose, shell functions are preferred over aliases.' -- Bash Reference Manual
Reply Retweet Like
Unix tool tip Jun 11
Reply Retweet Like
Unix tool tip Jun 10
Linux shell for iOS
Reply Retweet Like
Unix tool tip Jun 10
If a sed command has one address, the command is applied to all lines matching that address.
Reply Retweet Like
Unix tool tip retweeted
Data Science Fact Jun 10
Using AWK and R to parse 25 TB of genetic data
Reply Retweet Like
Unix tool tip Jun 10
"Regardless of how much memory you ask for, [malloc] will just give it to you, but it will only really reserve it when you try to write to it."
Reply Retweet Like
Unix tool tip Jun 8
"The quotation marks and other punctuation suggested that it had originally been composed in the nerd-friendly text processing program Emacs." -- , Fall; or Dodge in Hell
Reply Retweet Like
Unix tool tip Jun 8
Using org-mode outside of Emacs
Reply Retweet Like
Unix tool tip Jun 7
gzip compresses, gunzip decompresses. gunzip is the same as gzip -d.
Reply Retweet Like
Unix tool tip Jun 6
If a sed command has no explicit address, the command is applied to all lines.
Reply Retweet Like
Unix tool tip Jun 5
Reply Retweet Like
Unix tool tip Jun 5
The awk variable $1 contains the first field in a record, $2 the second, $3 the third, etc. $0 contains all fields.
Reply Retweet Like
Unix tool tip Jun 4
The utility 'file' reports a file's type. With the option -z it will try to look inside zipped files.
Reply Retweet Like