The method of string interception in Shell

This article focuses on "the method of intercepting strings in Shell". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn "the method of intercepting strings in Shell".

one。 The string after the last string is intercepted from left to right:

${variable##*string}

For example:

# cat test.sh

#! / bin/bash

Var='1234567890abcedef1208'

Echo ${var##*0}

Intercept the last string after 0 from left to right

Run:

#. / test.sh

eight

two。 The string after the first string is intercepted from left to right:

${variable#*string}

For example:

# cat test.sh

#! / bin/bash

Var='1234567890abcedef1208'

Echo ${var#*0}

Intercept the string after the first 0 from left to right

#. / test.sh

Abcedef1208

three。 The string after the last string is intercepted from right to left:

${variable%%string*}

For example:

# cat test.sh

#! / bin/bash

Var='1234567890abcedef1208'

Echo ${var%%0*}

Intercept the last string after 0 from right to left

#. / test.sh

123456789

four。 The string after the first string is intercepted from right to left:

${variable%string*}

For example:

# cat test.sh

#! / bin/bash

Var='1234567890abcedef1208'

Echo ${var%0*}

Intercept the string after the first 0 from right to left

#. / test.sh

1234567890abcedef12

At this point, I believe you have a deeper understanding of "the method of string interception in Shell". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!