All Questions
35 questions
0
votes
2
answers
205
views
Command-line tool enabling tagging and related tags functionality
Is there a command-line tool that enables to give a file more attributes than a name?
For example, we have a file called ubuntu.pdf and we give it tags like command-line, shell, nautilus, ...
- 15k
0
votes
0
answers
36
views
How to properly format the command argument for sudo? [duplicate]
I have a command that is similar to this minimal example:
$ sh -c 'echo "1=$1"' _ foo
1=foo
$
When I want to run it through sudo, it stops working:
$ sudo -i -u user -- sh -c 'echo "1=...
- 3,504
0
votes
4
answers
837
views
Bash: convert 100,000+ characters to decimal format?
I'm looking for a quick and not-so CPU intensive solution to convert 100,000+ lines of text into decimal format.
# random ascii
string='QPWOEIRUTYALSKDJFHGZMXNCBV,./;[]75498053$#!@*&^%(*'
convert ...
1
vote
2
answers
702
views
Function to go forward one directory, if possible?
I use below code snippet (by pressing alt-h), to go backward one level of current directory.
up-dir() {
cd ".."
zle reset-prompt
}
zle -N up-dir
bindkey "^[h" up-dir
I want similar ...
- 1,855
-2
votes
1
answer
181
views
How to include interaction with the command in the same script?
I have written a script to run a specific program, my script contains many steps, some of these steps need my simple interaction by writing 0 then enter, How can I do that so that I don't need to ...
6
votes
1
answer
8k
views
How to abort if ssh control socket already exists?
I'm using the following line in my scripts:
ssh -f -N -M -S <control socket> <host>
This means the initial connection just stays in the background and I can use it for subsequent calls to ...
- 3,504
0
votes
1
answer
89
views
How can I display the largest common part of two files?
I know how to use comm, diff or grep to display every common line of two files. But how can I display only the largest common part, i. e. the most common lines in succession?
(If there are equally ...
- 3,504
12
votes
2
answers
13k
views
How can I do an if conditional for a failure of a bash command?
I'd like to have a very simple condition that will only execute if the command fails.
In this example it's a conditional based on the SUCCESS of the command.
if command ; then
echo "Command ...
- 6,473
2
votes
3
answers
6k
views
Progress bar to display progress based on number of files found/completed in for loop?
Is there a progress bar that can show visually completed progress based on the number of detected files found and completed in a for loop like the one below?
mkdir -p hflip; for i in *.mp4; do ffmpeg ...
- 533
-1
votes
1
answer
50
views
Why is this bash script read line code giving me errors? [closed]
Why is this bash script read line code giving me errors?
read -p "Does this require cropping? (y/n)? " answer
case ${answer:0:1} in
y|Y )
mkdir cropped; for i in *.mp4; do ffmpeg -i "$i" -filter:...
- 533
-1
votes
1
answer
93
views
how to add additional command-line usage scenarios to script?
how can one make this script work with both input usage scenarios below?
#1 ./script.sh
#2 ./script.sh input.file
contents of script.sh
for i in *.mp4; do ffmpeg -i "$i" "${i%.*}.mp4
scenario ...
- 533
3
votes
2
answers
8k
views
How to include custom command options in a bash script with $1 and $2?
I have a script myscript.sh
#!/bin/sh
echo $1 $2
which is used something like ...
./myscript.sh foo bar
which gives me an output of ...
foo bar
but how can i make this script include custom ...
- 533
0
votes
2
answers
218
views
Concatenate the Content of Files from Various Directories with a Blank Line in Between
I have the file dir1.txt that contains the names of the following directories:
2
3
4
Directory 2 contains files 2_1.txt and 2_2.txt
Directory 3 contains files 3_1.txt and 3_2.txt
Directory 4 contains ...
- 5
2
votes
1
answer
615
views
How to modify these bash functions into one?
Normally these would go in one's .bashrc file to be used as a stopwatch, but they are sort of inconvienent to use and recall with the several different commands for the different units of time.
...
- 533
3
votes
2
answers
11k
views
Bash: Timer in while loop
I have a while loop in my script which waits for the connection get online and then continues.
#!/bin/sh
while ! ping -c1 $1 &>/dev/null
do echo "Ping Fail - `date`"
done
echo "Host ...
- 33