Everyday terminal tips to make a developers life easier.
Tip: A sample tip
Description: A sample description
Follow the template above and keep appending. Make sure you add your name/link your github profile at the end:-)
Tip: !$
Description: Execute the last command which was just executed.
Tip: > file.txt
Description: Truncates a file it exists or creates an empty file.
Tip: echo "hello, world" | at midnight
Description: Runs the command specified at midnight. It can be very verbose like at 6pm tomorrow or at now +2minute or 2am next year. use man at to know more about the at command.
Tip: rm -f !(file.txt)
Description: Remove all files execpt file.txt.
Tip: ls -1 | wc -l
Description: Count all files in a directory.
Tip: hash
Description: Prints the number of times a command is executed in the current terminal session.
Tip: tar --transform 's, ^, PREFIX,' -c -f TARGET.tar <FILES>
Description: Prepend "PREFIX" to each file while archiving. Useful when you want to create a common top level directory hierarchy for all the files being archived. For example:
tar --transform "s, ^, $PKGNAME-$VERSION/, S" -czpf "$PKGNAME-$VERSION.tar.gz" -C "$BASEDIR/$BASENAME"
Symfony SampleConfs Scripts activemq
S - does not apply transformation to symbolic link targets
Tip: tar -czf TARGET.tar.gz <FILES> --checkpoint --checkpoint-action='ttyout=archiving... %u \r'
Description: provides a nice progress status of archiving process when you dont want to use -v option to keep a track of what is happening. checkpoint option can be modified to provide a % progress status bar
Tip: tar -czvf TARGET.tar.gz -X exclude.txt <FILES>
Description: Exclude a list of unwanted files. Usually when creating a package you would not want a certain dirs or file. All those unrequired files can be put into a file and specified with tar so that those files will be excluded while archiving. Example:
tar --transform "s, ^, $PKGNAME-$VERSION/, S" -czpf "$PKGNAME-$VERSION.tar.gz" -X exclude.txt
-C "$BASEDIR/$BASENAME" Symfony SampleConfs Scripts activemq --checkpoint \
--checkpoint-action='ttyout=archiving... %u \r'
Tip: tar -tf PACKAGE.tar.gz | grep -o '^[^/]\+' | sort -u]
Description: Gives the names of the files in the topmost directory packaged in the provided archive. Useful when there is only one directory in the archive and you want to know the name of it without extracting the contents.
Tip : ALT + "."
Description: Gives the Last word of the previous command.
Tip: !!
Description: Replaces "!!" with the last command.