Skip to main content

xargs in unix


Sometimes we have a list with which we may need to do the same action on it. In such cases xargs command is very useful in unix.

Some scenarios:

Get word count of the files in a file

> ls | xargs wc -l

Comments

Post a Comment

Popular posts from this blog

UNIX : How to ignore lines with certain names

Sometimes we need to ignore multiple lines with certain words and get the list out of the file. usually it will be a log file to read . The below grep command can be used to ignore multiple words present in a text file. Lets say the file contain $ cat list.txt apple orange apple banana papaya Now we need to ignore line with orange , banana and papaya . So we can use the below grep command. $ cat list.txt | grep -Ev "orange|banana|papaya" apple apple It will ignore lines with the words in -v part of grep.
Post a Comment
Read more

UNIX : unpack and pack using tar

Tarball or tar is a utility in linux to unpack or pack the files. Lets say we have a file name hello.tar.gz which is packed and compressed. To unpack the file use the below command > tar xvzf hello.tar.gz This is unpack the compressed tarball file to the directory hello in current location. To pack a list of files to a compressed tarball file , we can follow the below steps. Let say we have the following list of files in Hello directory. > cd Hello > ls helloworld.py README.txt Move back to parent directory and give the below command. > cd .. > tar zcvf hello.tar.gz Hello This will create the compressed tar file in the current location
Post a Comment
Read more