I want to add the ".sbd" after all files ending on ".utf8" in a directory
I do not want to replace the extensions, but really want to add them so the filenames will look like "filename.utf8.sbd"
I think I should adapt the following code, but don't manage to find out exactly how
for f in *.utf8 ; do mv "$f" "$f.sbd" ; done
Can anyone help me? I am very new to the command line
Thanks a bunch!
Your code should work if no file has spaces (or other "special" character) in the name and if the directory is not pathologically big.
In those cases, you can use something like this:
ls|grep '*.utf8$'|while read i; do mv "$i" "$i.sbd"; done
Related
How can I pass each one of my repository files and to do something with them?
For instance, I want to make a script:
#!/bin/bash
cd /myself
#for-loop that will select one by one all the files in /myself
#for each X file I will do this:
tar -cvfz X.tar.gz /myself2
So a for loop in bash is similar to python's model (or maybe the other way around?).
The model goes "for instance in list":
for some_instance in "${MY_ARRAY[#]}"; do
echo "doing something with $some_instance"
done
To get a list of files in a directory, the quick and dirty way is to parse the output of ls and slurp it into an array, a-la array=($(ls))
To quick explain what's going on here to the best of my knowledge, assigning a variable to a space-delimited string surrounded with parens splits the string and turns it into a list.
Downside of parsing ls is that it doesn't take into account files with spaces in their names. For that, I'll leave you with a link to turning a directory's contents into an array, the same place I lovingly :) ripped off the original array=($(ls -d */)) command.
you can use while loop, as it will take care of whole lines that include spaces as well:
#!/bin/bash
cd /myself
ls|while read f
do
tar -cvfz "$f.tar.gz" "$f"
done
you can try this way also.
for i in $(ls /myself/*)
do
tar -cvfz $f.tar.gz /myfile2
done
I'm sure I had a working oneliner that allowed me to search a directory (or .) for files containing names matching names in a txt file and copying these to a new directory.
Somehow I cannot get it to work - any help please.
Sorry if this is a duplicate - I have really searched for an answer (here and elsewhere), but cannot find a solution.
foo/movehere/sample.txt file:
141516
141619
Files I want to find and move i.e.:
foo/folder/folder2/141516_S2_R1.fastq.gz
foo/folder/folder2/141516_S2_R1.fastq.gz
Where I want to move them:
foo/movehere/
my current (nonfunctioning) oneliner:
while read -r FILE; do find . -name "$FILE*.fastq.gz" -type f -exec cp {} /foo/movehere/ \;;done </foo/movehere/sample.txt
There are some errors in the oneliner. It still does not work.
you can use eval in your code
SEARCH="-name '$FILE*.fastq.gz'"
eval "find . $SEARCH -type f exec cp '{}' /foo/movehere/ \";
security note : do not put user supplied data into eval.
Not sure if I should delete the post - but I'll leave my solution here if anyone else encounter the exact same problem.
Still not 100% sure I understand why it failed, but I got the oneliner working by copying all the sample names from the txt to a unedited file with no suffix.
I guess some (hidden) "\r" editing in the txt file messed up the "$FILE" so that it searched for something like this:
151617*fastq.gz\r
Perhaps someone with a better understanding of terminal scripts may confirm this.
EDIT 190128: happened across my old question, and just in case anyone struggle with something similar, make sure you have UNIX or similar line shifts, my txt files had weird window line shifts.
I am aware there isn't a special bash function to do this and we will have to build this with available tools -- e.g. sed, awk, grep, etc.
We dump files into a directory and while their filename looks random, they can be mapped to their full description. For example:
/tmp/abcxyz.csv
/tmp/efgwaz.csv
/tmp/mnostu.csv
In filemapping.dat, we have:
abcxyz, customer_records_abcxyz
efgwaz, routernodes_logs_efgwaz
mnostu, products_campaign
We need to go through each of them in the directory recursively and rename the file with its full description. Final outcome:
/tmp/customer_records_abcxyz.csv
/tmp/routernodes_logs_efgwaz.csv
/tmp/products_campaign_mnostu.csv
I found something similar here but not sure how to work it out at directory level dealing with only one file as the lookup/referece file. Please help. Thanks!
I would try something like this:
sed 's/,/.csv/;s/$/.csv/' filemapping.dat | xargs -n2 mv
Either cd to tmp beforehand, or modify the sed command to include the path name.
The sed commands simply replace the comma and the line end with the string ".csv".
I'm writing a script that needs to find a file in a directory based on the user input. That file contains a filepath, and I need to use that filepath as a variable so I can use it later in a mv command. So far :-
read x
path = `cat ~/filepaths/$x`
Later it needs to move a file from trash using the filepath read from this file
mv ~/trash/$x $path
Currently, it doesn't appear to work, and hangs when it runs. Is there something stupid I've missed here?
EDIT: Solved, was a stupid syntax mistake. Thanks for your help!
Remove the spaces around the assignment:
path=`cat ~/filepaths/$x`
or:
path=$(< ~/filepaths/$x)
I'm trying to use the rename command in a Terminal in Ubuntu to append a string to the beginning of some avi file names as follows.
rename -n 's/(\w)\.avi$/String_to_add__$1\.avi/' *.avi
So I expect the following:
String_to_add_MyMovie.avi
Problem is that when I run the command it appends the string to the end of the file name, so I end up with the following:
MyMovie_String_to_add_.avi
I'm not sure if I have the perlexpr syntax wrong or something else. Any insight is appreciated.
UPDATE:
Thanks for the suggestions, I tried the suggestions from alno and plundra and made the following modification:
rename -n 's/(\w+)\.avi$/String_to_add__$1\.avi/' *.avi
But now the file gets the string inserted in the middle of the name as follows:
My_String_to_add_Movie
My apologies though, I neglected to mention that the titles are preceded by 3 numeric values, so the file name nomenclature is {3 numbers}-My_Movie.avi so for example 001-My_Movie.avi. But I didn't think this would make a difference since I'm assuming \w+ matches alphanumeric characters, might the '-' be the issue?
Haven't tried Christian's approach yet, I want to be able to use the rename command, or at least understand why it's not working before I try a different approach.
I don't think rename -n is standard. You could do this:
for i in *.avi; do mv $i String_to_add_$i; done
You're only matching a single character with \w, you want \w+, so the complete line would be:
rename -n 's/(\w+)\.avi$/String_to_add__$1\.avi/' *.avi
Correct version:
rename -n 's/(\w+)\.avi$/String_to_add__$1\.avi/' *.avi
You simply forgot + after \w, so it tried to match only one character.