Skip to main content

Linux command: sed

Linux command: sed - stream editor

sed - stream editor for filtering and transforming text

Notes: sed and grep operate line-by-line

Search and replace all my_ with his_ in file.txt file

$ sed -i 's/my_/his_/g' file.txt

Search and delete blank line

$ sed -i 's/^$//' file.txt
Labels:

Popular posts from this blog

Chrome: Common Keyboard Shortcuts

Get more productive by learning and using shortcuts in Chrome browser.
Read more

DOS Commonly Used Commands

Read more

Linux command: lastlog

lastlog command reports the most recent login of all users or of a given user. NAME lastlog - reports the most recent login of all users or of a given user SYNOPSIS lastlog [options] DESCRIPTION lastlog formats and prints the contents of the last login log /var/log/lastlog file. The login-name, port, and last login time will be printed. The default (no flags) causes lastlog entries to be printed, sorted by their order in /etc/passwd. OPTIONS The options which apply to the lastlog command are: -b, --before DAYS Print only lastlog records older than DAYS. -h, --help Display help message and exit. -R, --root CHROOT_DIR Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory. -t, --time DAYS Print the lastlog records more recent than DAYS. -u, --user LOGIN|RANGE Print the ...
Read more