I'm trying to rename a batch of files using a bash script or just in the command line but can't seem to find anything on how to remove characters before the first occurrence of a character.
Right now my files are named:
author1_-_year_-_title_name.txt
author2_-_year_-_title_name.txt
And I want them to look like
_-_year_-_title_name.text
or even
year_-_title_name.text
I've tried sed in the command line:
sed 's/^[^_-_]* _-_ //' *
but this only tried to edit the text files, not the file name
You can't change filenames using sed. Try this simple loop instead:
for fp in ./*_-_*; do
echo mv "$fp" "${fp#*_-_}"
done
If the output looks good, remove echo.
Could you please try rename command as follows.
rename -n s/[^-]*-_// *.txt
Output will be as follows.
rename(author1_-_year_-_title_name.txt, year_-_title_name.txt)
rename(author2_-_year_-_title_name.txt, year_-_title_name.txt)
Once you are Happy with above results(which will print only on terminal) remove -n option in above command and it should rename the files.
Related
I am facing a strange problem. An answer to what I want to do already exists Here. I am trying to remove trailing commas from each line of a file containing thousands of lines. Like this -
This is my command -
sed -i 's/,*$//g' file_name.csv
However, the output I get is exactly the same as the image above and the trailing commas are not removed.
I think SED is not matching the pattern and thus failing to replace the commas. To check if there are any hidden characters in the file, I used VIM's :set list option -
There are only $ at the end of each line which is just what is expected.
I can't understand why the command is failing.
I can suggest you two options:
First One is my favorite.
dos2unix file
#####will work for Huge File also
then try to run the command.
Other way to do this:
cat file | tr -d '\r' > file
###may not work for huge file
then run the command.
tr -d '\r' < file > file.tmp ; mv file.tmp file
##will work for Huge File also
Thanks to #Nahuel for suggesting last command.
I would like to delete filenames from a textfile to have as output only the folder.
Example:
Creature\FrostwolfPup\FrostWolfPup_Shadow.m2
Creature\FrostwolfPup\FrostWolfPup_Fire.m2
To
Creature\FrostwolfPup\
To match only the Filenames i use [^\\]*$
Now i put it together with sed while /d should delete it
D:\filetype\core\sed.exe -n -e "/^[^\\]*$/d" D:\filetype\listfile\archive\tmp\all.txt > D:\filetype\module\model_bruteforce\tmp\folders_tmp1.txt
But instead of a textfile with my folders i got only a empty textfile as output, and so something must be wrong.
Tested on linux, not cygwin
sed -r 's/[^\\]*$//g' /path/to/original/file > /path/to/new/file
Try:
sed.exe -e "s/[^\\]*$//" path/to/folders.txt
The command s/[^\\]*$// asks sed to remove everything after the last \ on a line to the end of the line.
Caveat: since I don't have a windows machine handy for testing, I am unsure if the backslashes need to be doubled as shown above.
Discussion
-n tells sed not print anything unless we explicitly ask it to. The following command never asks sed to print:
sed.exe -n -e "/^[^\\]*$/d"
Consequently, it produces no output.
Have a directory full of file names that end with .mp3 and have a code in it that i would like to pipe into a text file.
I need to get the last 11 characters before the .mp3 part of a file in a certain directory and pipe that into a text file (with bash on mac osx)
How do I accomplish this? With sed?
If I'm understanding correctly, you have a list of files with names like "abcdefghijklmnopqrstuvwxyz.mp3" and want to extract "pqrstuvwxyz". You can do this directly in bash without invoking any fancy sed business:
for F in *.mp3; do STRIP=${F/.mp3}; echo ${STRIP: -11}; done > list.txt
The first STRIP variable is the name of each file F with the .mp3 extension removed. Then you echo the last 11 characters and save to a file.
There's a nice page on bash substitutions here. sed is great but I personally find it's overkill for these simple cases.
Along with good above answers, can be done via awk
for f in `ls *.mp3`;
echo $f|awk -F. '{printf substr($1,length($1)-11,length($1)),$2;}'
done
I want to delete some files mentioned in a text file .The text would be in a single line like below along with some other data
Cannot Handle File:C:\patches\BUG2\abc.javaCannot Handle File:C:\patches\BUG2\xyz.javaErrors .
So now I want to fetch the file names like abc.java and xyz.java in the text file and delete them so How can we proceed with it using shell. Please help to resolve this
Perl to the rescue:
perl -lne 'unlink $1 while /File:(.*?)(?:Cannot|Errors)/g' input.txt
-l adds a newline to prints
-n processes the input line by line
(.*?) matches "frugally", i.e. finds the shortest possible match
/g matches globally, i.e. as many times as it can.
unlink removes a file.
So, the file name must be preceded by File: and followed by Cannot or Errors.
Using grep -o and xargs:
grep -Eo '[[:alnum:]_$-]+\.java' file | xargs rm
Will get this output from grep:
grep -Eo '[[:alnum:]_$-]+\.java' file
abc.java
xyz.java
I'm new to OSX command line tools.
I am trying to find a block of text in a file and append this text at the end of all lines in another text file. At run time I don't know what this text will be, I just know it will be located within "BEGINHMM" and "ENDHMM". Also, I don't know the makeup of the destination file, except for that it will not be an empty text file.
The command which finds the block of text of interest is:
sed -n '/<BEGINHMM>/,/<ENDHMM>/p' proto
where "proto" is a text file containing the text of interest.
I've been trying to pipe the output of the above command to another 'sed' command, in the following manner:
xargs -I '{}' sed -i .bak 's/$/{}/' monophones0.txt
but I am getting some bizarre results, I see the "{}" inserted in the text for example.
I've also tried piping to:
xargs -0 sed -i .bak 's/$/&/' monophones0.txt
but I just get the printout (similar to terminal echo) of the text I am trying to grab.
Ultimately I want to loop over several 'proto' files in multiple directories and copy the text between the "BEGINHMM", "ENDHMM" block in each directory, and append the selected text to that directory's monophones.txt lines.
I am running the commands in the terminal, bash, OSX 10.12.2
Any help would be appreciated.
(1) Your sed command is of the form sed -n '/A/,/B/p'; this will include the lines on which A and B occur, even if these strings do not appear at the beginning of the line. This form may have other surprises in store for you as well (what do expect will happen if B is missing or repeated?), but the remainder of this post assumes that's what you want.
(2) It's not clear how you intend to specify the "proto" files, but you do indicate they might be in several directories, so for the remainder of this post, I'll assume they are listed, one per line, in a file named proto.txt in each directory. This will ensure that you don't run into any limitations on command-line length, but the following can easily be modified if you don't want to create such a file.
(3) Here is a script which will use the sed command you've mentioned to copy segments from each of the "proto" files specified in a directory to monophones0.txt in the directory in which the script is executed.
#!/bin/bash
OUT=monophones0.txt
cat proto.txt | while read file
do
if [ -r "$file" ] ; then
sed -n '/<BEGINHMM>/,/<ENDHMM>/p' "$file" >> $OUT
elif [ -n "$file" ] ; then
echo "NOT FOUND: $file" >&2
fi
done
Just like what you did before. tmpfile=$(mktemp); sed -n '/<BEGINHMM>/,/<ENDHMM>/p' proto >$tmpfile; sed -i .bak "r $tmpfile" monophones0.txt; rm $tmpfile. This is the basic idea; there are other checks you need to perform to make this a robust script.
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