All Questions
40 questions
1
vote
3
answers
129
views
Passing directory names into a bash command individually [duplicate]
I have the following directory names:
/aaa
/bbb
/ccc
/ddd
And I want to run the following command passing in the directory names with just ls:
ls | composer show drupal/MY_DIRECTORY_NAME_HERE --...
- 1,855
0
votes
2
answers
1k
views
Error while reading File with Bash
I want to read a File in a bash script with the following code:
#!/bin/bash
file=$(sort "$1" | cut -f 1 -d "," | uniq -c | sed 's/^ *//g')
while IFS= read -r line
do
echo &...
- 1
0
votes
2
answers
1k
views
Nested read statement leads to infinite loop in bash
I'm trying to read a list of files from a command and ask the user for input for each file. I'm using one read to read the filenames, and another one to get user input, however this script seems to ...
- 297
-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
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
0
votes
2
answers
939
views
CLI run multiple commands and close terminal
I want to run the following commands and close the terminal:
mysqldump -udatabase -pdatabase database > db.sql && zip db.sql.zip db.sql && rm db.sql && mv db.sql.zip /var/...
- 1
0
votes
1
answer
461
views
Command Line Options for a script
$ cat test15.sh
#!/bin/bash
# extracting command line options as parameters
#
echo
while [ -n "$1" ]
do
case "$1" in
-a) echo "Found the -a option" ;;
-b) echo "Found the ...
- 180
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