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Bash Script read -p
Problem with script substitution when running scriptError message 'source: not found' when running a script.sh file on Startup Applications isn't executedProblem with input from simple script that copies a file to a different directorybash script to run a second command with select output from first command as variableWant to write a bash script to automate creating program filesRead input for bash scriptexit a bash command in a script without exiting the scriptProper method for storing user input in bash scriptsHow to pass a value to read input before being prompted?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I'm pretty sure the answer is no but I thought I'd ask anyway. I want to have a bash script with a user input that automatically proceeds after the desired amount of characters are entered, in this case 3.
So when the user enters 123 or abc, the script moves on with that variable rather than waiting for an 'Enter'.
read -p 'User Input: ' userInput
Is this possible?
bash scripts
edited Aug 2 at 17:09
terdon♦
72.9k14 gold badges149 silver badges233 bronze badges
asked Aug 2 at 16:01
Ashton WattsAshton Watts
252 bronze badges
add a comment |
I'm pretty sure the answer is no but I thought I'd ask anyway. I want to have a bash script with a user input that automatically proceeds after the desired amount of characters are entered, in this case 3.
So when the user enters 123 or abc, the script moves on with that variable rather than waiting for an 'Enter'.
read -p 'User Input: ' userInput
Is this possible?
bash scripts
edited Aug 2 at 17:09
terdon♦
72.9k14 gold badges149 silver badges233 bronze badges
asked Aug 2 at 16:01
Ashton WattsAshton Watts
252 bronze badges
add a comment |
I'm pretty sure the answer is no but I thought I'd ask anyway. I want to have a bash script with a user input that automatically proceeds after the desired amount of characters are entered, in this case 3.
So when the user enters 123 or abc, the script moves on with that variable rather than waiting for an 'Enter'.
read -p 'User Input: ' userInput
Is this possible?
bash scripts
edited Aug 2 at 17:09
terdon♦
72.9k14 gold badges149 silver badges233 bronze badges
asked Aug 2 at 16:01
Ashton WattsAshton Watts
252 bronze badges
I'm pretty sure the answer is no but I thought I'd ask anyway. I want to have a bash script with a user input that automatically proceeds after the desired amount of characters are entered, in this case 3.
So when the user enters 123 or abc, the script moves on with that variable rather than waiting for an 'Enter'.
read -p 'User Input: ' userInput
Is this possible?
bash scripts
bash scripts
edited Aug 2 at 17:09
terdon♦
72.9k14 gold badges149 silver badges233 bronze badges
asked Aug 2 at 16:01
Ashton WattsAshton Watts
252 bronze badges
edited Aug 2 at 17:09
terdon♦
72.9k14 gold badges149 silver badges233 bronze badges
asked Aug 2 at 16:01
Ashton WattsAshton Watts
252 bronze badges
edited Aug 2 at 17:09
terdon♦
72.9k14 gold badges149 silver badges233 bronze badges
edited Aug 2 at 17:09
terdon♦
72.9k14 gold badges149 silver badges233 bronze badges
edited Aug 2 at 17:09
terdon♦
72.9k14 gold badges149 silver badges233 bronze badges
72.9k14 gold badges149 silver badges233 bronze badges
asked Aug 2 at 16:01
Ashton WattsAshton Watts
252 bronze badges
asked Aug 2 at 16:01
Ashton WattsAshton Watts
252 bronze badges
asked Aug 2 at 16:01
Ashton WattsAshton Watts
252 bronze badges
252 bronze badges
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
In bash, you can add -n 3 or -N 3 depending on the exact behavior you require. From help read:
-n nchars return after reading NCHARS characters rather than waiting
for a newline, but honor a delimiter if fewer than
NCHARS characters are read before the delimiter
-N nchars return only after reading exactly NCHARS characters, unless
EOF is encountered or read times out, ignoring any
delimiter
answered Aug 2 at 16:05
steeldriversteeldriver
77.7k12 gold badges129 silver badges207 bronze badges
If I try adding -N 3 or -n 3 it says illegal option -n.
– Ashton Watts
Aug 2 at 18:25
1
@AshtonWatts are you sure you are usingbash- notsh(ordash)?
– steeldriver
Aug 2 at 18:35
Yeah the problem was that I wasn't running it as bash. Working fine now.
– Ashton Watts
Aug 2 at 19:27
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
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active
oldest
votes
In bash, you can add -n 3 or -N 3 depending on the exact behavior you require. From help read:
-n nchars return after reading NCHARS characters rather than waiting
for a newline, but honor a delimiter if fewer than
NCHARS characters are read before the delimiter
-N nchars return only after reading exactly NCHARS characters, unless
EOF is encountered or read times out, ignoring any
delimiter
answered Aug 2 at 16:05
steeldriversteeldriver
77.7k12 gold badges129 silver badges207 bronze badges
If I try adding -N 3 or -n 3 it says illegal option -n.
– Ashton Watts
Aug 2 at 18:25
1
@AshtonWatts are you sure you are usingbash- notsh(ordash)?
– steeldriver
Aug 2 at 18:35
Yeah the problem was that I wasn't running it as bash. Working fine now.
– Ashton Watts
Aug 2 at 19:27
add a comment |
In bash, you can add -n 3 or -N 3 depending on the exact behavior you require. From help read:
-n nchars return after reading NCHARS characters rather than waiting
for a newline, but honor a delimiter if fewer than
NCHARS characters are read before the delimiter
-N nchars return only after reading exactly NCHARS characters, unless
EOF is encountered or read times out, ignoring any
delimiter
answered Aug 2 at 16:05
steeldriversteeldriver
77.7k12 gold badges129 silver badges207 bronze badges
If I try adding -N 3 or -n 3 it says illegal option -n.
– Ashton Watts
Aug 2 at 18:25
1
@AshtonWatts are you sure you are usingbash- notsh(ordash)?
– steeldriver
Aug 2 at 18:35
Yeah the problem was that I wasn't running it as bash. Working fine now.
– Ashton Watts
Aug 2 at 19:27
add a comment |
In bash, you can add -n 3 or -N 3 depending on the exact behavior you require. From help read:
-n nchars return after reading NCHARS characters rather than waiting
for a newline, but honor a delimiter if fewer than
NCHARS characters are read before the delimiter
-N nchars return only after reading exactly NCHARS characters, unless
EOF is encountered or read times out, ignoring any
delimiter
answered Aug 2 at 16:05
steeldriversteeldriver
77.7k12 gold badges129 silver badges207 bronze badges
In bash, you can add -n 3 or -N 3 depending on the exact behavior you require. From help read:
-n nchars return after reading NCHARS characters rather than waiting
for a newline, but honor a delimiter if fewer than
NCHARS characters are read before the delimiter
-N nchars return only after reading exactly NCHARS characters, unless
EOF is encountered or read times out, ignoring any
delimiter
answered Aug 2 at 16:05
steeldriversteeldriver
77.7k12 gold badges129 silver badges207 bronze badges
answered Aug 2 at 16:05
steeldriversteeldriver
77.7k12 gold badges129 silver badges207 bronze badges
answered Aug 2 at 16:05
steeldriversteeldriver
77.7k12 gold badges129 silver badges207 bronze badges
answered Aug 2 at 16:05
steeldriversteeldriver
77.7k12 gold badges129 silver badges207 bronze badges
77.7k12 gold badges129 silver badges207 bronze badges
If I try adding -N 3 or -n 3 it says illegal option -n.
– Ashton Watts
Aug 2 at 18:25
1
@AshtonWatts are you sure you are usingbash- notsh(ordash)?
– steeldriver
Aug 2 at 18:35
Yeah the problem was that I wasn't running it as bash. Working fine now.
– Ashton Watts
Aug 2 at 19:27
add a comment |
If I try adding -N 3 or -n 3 it says illegal option -n.
– Ashton Watts
Aug 2 at 18:25
1
@AshtonWatts are you sure you are usingbash- notsh(ordash)?
– steeldriver
Aug 2 at 18:35
Yeah the problem was that I wasn't running it as bash. Working fine now.
– Ashton Watts
Aug 2 at 19:27
If I try adding -N 3 or -n 3 it says illegal option -n.
– Ashton Watts
Aug 2 at 18:25
If I try adding -N 3 or -n 3 it says illegal option -n.
– Ashton Watts
Aug 2 at 18:25
1
1
@AshtonWatts are you sure you are using
bash - not sh (or dash)?– steeldriver
Aug 2 at 18:35
@AshtonWatts are you sure you are using
bash - not sh (or dash)?– steeldriver
Aug 2 at 18:35
Yeah the problem was that I wasn't running it as bash. Working fine now.
– Ashton Watts
Aug 2 at 19:27
Yeah the problem was that I wasn't running it as bash. Working fine now.
– Ashton Watts
Aug 2 at 19:27
add a comment |
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