It is line4. It is line5.Use the sed command to remove blank lines and lines with whitespace characters from the specified text file in bash and write the output to the original file.Use sed Command 1 2 3 4 sed -i '/^[[:space:]]*$/d' file.txt echo -e "The contents of ...
Before we can delete empty lines usingsed, we need tobe able to identify them. Empty lines usually refer to lines thatcontain no visible characters, including spaces or tabs. However, we'll define an empty line as a line without any characters in it (besides the line termination character\n...
# 验证行数是否正确if[ $line -gt $count ]thenecho"too much lines"exitfifrom=$(($count-$line+1))echo"all lines:$count, you want delete:$line, from:$from"sed-i"${from},\$d"ccecho"after deleting:"catcc 验证: ./test.sh3输出:+ line=3+cat+echo'before deleting'before deleting+cat...
Grep stands for Global Regular Expression Print. We can easily remove the Bash lines with the grep command, another built-in tool in Bash. A provided file's text and strings are searched, and the program outputs every line that meets a pattern. You can use this technique to delete the em...
delete-char"/e[2~":quoted-insert"/e[5C":forward-word"/e[5D":backward-word"/e[1;5C":forward-word"/e[1;5D":backward-word# for rxvt"/e[8~":end-of-line"/eOc":forward-word"/eOd":backward-word# for non RH/Debian xterm, can't hurt for RH/DEbian xterm"/eOH":beginning-of-line...
The dreaded rm -rf / command deletes every file on an entire drive. It works by recursively deleting all the subdirectories of root and their subdirectories. The -f (for "force") flag compounds the problem by suppressing prompts. Don't do this....
bash: delete a string from last line I am using a while loop to read a file and i have to delete a string from the last line. Here is the code so far: 1. Read line by line from file new.html using while loop and store in a variabledata ...
ldapdelete(1) ldaplist(1) ldapmodify(1) ldapmodrdn(1) ldapsearch(1) ldd(1) lefty(1) less(1) lessecho(1) lesskey(1) let(1) lex(1) lftp(1) lftpget(1) lgrpinfo(1) libgd2(1) libnetcfg(1) libtool(1) libtoolize(1) limit(1) line(1) link(1g) links(1) list_devices(1) ...
Example-4: Delete multiple files using `rm` command More than one file can be deleted by using ‘rm’ command and separating the filenames with space. In the following script, multiple filenames will be taken from the command line arguments. If any file does not exist, then it will sho...
Basically you can simply delete the installed directory and the settings that the user added. Close all the ble.sh sessions (the Bash interactive sessions with ble.sh) Remove related user data. If you would like to keep them, you can skip these steps. Remove the added lines in .bashrc....