Revisions to Replace several consecutive lines with a single line using sed

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edited Jan 4, 2021 at 16:36

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To edit a file, use a scriptable text editor, such as Ed or Ex (both POSIX editors). The syntax is very similar.

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'w' 'q' | ed -s file

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'x' | ex file

printf '%s\n' supplies commands to the editor.
/^import matplotlib as mpl$/d deletes the first line matching the pattern.
s/mpl/plt performs the substitution on the next line.
w and q or x save the changes.

If you really want Sed,

sed '/^import matplotlib as mpl$/N; s/.*\nmpl/plt/' file

Addressing your expanded question:

find /path/to/dir/ -type f -exec sh -c '
    printf "%s\n" "/^import matplotlib as mpl\$/d" "s/mpl/plt" "w" "q" |
    ed -s "$1"' sh {} \;

To edit a file, use a scriptable text editor, such as Ed or Ex (both POSIX editors). The syntax is very similar.

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'w' 'q' | ed -s file

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'x' | ex file

printf '%s\n' supplies commands to the editor.
/^import matplotlib as mpl$/d deletes the first line matching the pattern.
s/mpl/plt performs the substitution on the next line.
w and q or x save the changes.

If you really want Sed,

sed '/^import matplotlib as mpl$/N; s/.*\nmpl/plt/' file

To edit a file, use a scriptable text editor, such as Ed or Ex (both POSIX editors). The syntax is very similar.

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'w' 'q' | ed -s file

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'x' | ex file

printf '%s\n' supplies commands to the editor.
/^import matplotlib as mpl$/d deletes the first line matching the pattern.
s/mpl/plt performs the substitution on the next line.
w and q or x save the changes.

If you really want Sed,

sed '/^import matplotlib as mpl$/N; s/.*\nmpl/plt/' file

Addressing your expanded question:

find /path/to/dir/ -type f -exec sh -c '
    printf "%s\n" "/^import matplotlib as mpl\$/d" "s/mpl/plt" "w" "q" |
    ed -s "$1"' sh {} \;

Sed alternative, anchor line

Source Link

edited Jan 4, 2021 at 13:03

Quasímodo

19.4k
4
41
78

To edit a file, use a scriptable text editor, such as Ed or Ex (both POSIX editors). The syntax is very similar.

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'w' 'q' | ed -s file

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'x' | ex file

printf '%s\n' supplies commands to the editor.
/^import matplotlib as mpl$/d deletes the first line matching the pattern.
s/mpl/plt performs the substitution on the next line.
w and q or x save the changes.

If you really want Sed,

sed '
    /^import matplotlib as mpl$/N
   N; s/.*\n.**\nmpl/plt.style.use(mpl_plt_default_template)/
 ' file

To edit a file, use a scriptable text editor, such as Ed or Ex (both POSIX editors). The syntax is very similar.

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'w' 'q' | ed -s file

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'x' | ex file

printf '%s\n' supplies commands to the editor.
/^import matplotlib as mpl$/d deletes the first line matching the pattern.
s/mpl/plt performs the substitution on the next line.
w and q or x save the changes.

If you really want Sed,

sed '
    /^import matplotlib as mpl$/N
    s/.*\n.*/plt.style.use(mpl_plt_default_template)/
 ' file

To edit a file, use a scriptable text editor, such as Ed or Ex (both POSIX editors). The syntax is very similar.

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'w' 'q' | ed -s file

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'x' | ex file

printf '%s\n' supplies commands to the editor.
/^import matplotlib as mpl$/d deletes the first line matching the pattern.
s/mpl/plt performs the substitution on the next line.
w and q or x save the changes.

If you really want Sed,

sed '/^import matplotlib as mpl$/N; s/.*\nmpl/plt/' file

Sed alternative, anchor line

Source Link

edited Jan 4, 2021 at 12:58

Quasímodo

19.4k
4
41
78

To edit a file, use a scriptable text editor, such as Ed or Ex (both POSIX editors). The syntax is very similar.

printf '%s\n' '/import^import matplotlib as mplmpl$/d' 's/mpl/plt' 'w' 'q' | ed -s file

printf '%s\n' '/import^import matplotlib as mplmpl$/d' 's/mpl/plt' 'x' | ex file

printf '%s\n' supplies commands to the editor.
/import^import matplotlib as mplmpl$/d deletes the first line matching the pattern.
s/mpl/plt performs the substitution on the next line.
w and q or x save the changes.

If you really want Sed,

sed '
    /^import matplotlib as mpl$/N
    s/.*\n.*/plt.style.use(mpl_plt_default_template)/
' file

To edit a file, use a scriptable text editor, such as Ed or Ex (both POSIX editors). The syntax is very similar.

printf '%s\n' '/import matplotlib as mpl/d' 's/mpl/plt' 'w' 'q' | ed -s file

printf '%s\n' '/import matplotlib as mpl/d' 's/mpl/plt' 'x' | ex file

printf '%s\n' supplies commands to the editor.
/import matplotlib as mpl/d deletes the first line matching the pattern.
s/mpl/plt performs the substitution on the next line.
w and q or x save the changes.

To edit a file, use a scriptable text editor, such as Ed or Ex (both POSIX editors). The syntax is very similar.

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'w' 'q' | ed -s file

printf '%s\n' '/^import matplotlib as mpl$/d' 's/mpl/plt' 'x' | ex file

printf '%s\n' supplies commands to the editor.
/^import matplotlib as mpl$/d deletes the first line matching the pattern.
s/mpl/plt performs the substitution on the next line.
w and q or x save the changes.

If you really want Sed,

sed '
    /^import matplotlib as mpl$/N
    s/.*\n.*/plt.style.use(mpl_plt_default_template)/
' file

Source Link

answered Jan 4, 2021 at 12:51

Quasímodo

19.4k
4
41
78

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